SWCS046U March   2010  – October 2014 TPS65910

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3 Device Comparison
  4. 4Terminal Configuration and Functions
    1. 4.1 Signal Descriptions
  5. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  Handling Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Resistance Characteristics for RSL Package
    5. 5.5  I/O Pullup and Pulldown Characteristics
    6. 5.6  Digital I/O Voltage Electrical Characteristics
    7. 5.7  I2C Interface and Control Signals
    8. 5.8  Power Consumption
    9. 5.9  Power References and Thresholds
    10. 5.10 Thermal Monitoring and Shutdown
    11. 5.11 32-kHz RTC Clock
    12. 5.12 Backup Battery Charger
    13. 5.13 VRTC LDO
    14. 5.14 VIO SMPS
    15. 5.15 VDD1 SMPS
    16. 5.16 VDD2 SMPS
    17. 5.17 VDD3 SMPS
    18. 5.18 VDIG1 and VDIG2 LDO
    19. 5.19 VAUX33 and VMMC LDO
    20. 5.20 VAUX1 and VAUX2 LDO
    21. 5.21 VDAC and VPLL LDO
    22. 5.22 Timing and Switching Characteristics
      1. 5.22.1 Switch-On/-Off Sequences and Timing
        1. 5.22.1.1 BOOT1 = 0, BOOT0 = 0
        2. 5.22.1.2 BOOT1 = 0, BOOT0 = 1
      2. 5.22.2 Power Control Timing
        1. 5.22.2.1 Device Turn-On/Off With Rising/Falling Input Voltage
        2. 5.22.2.2 Device State Control Through PWRON Signal
        3. 5.22.2.3 Device SLEEP State Control
        4. 5.22.2.4 Power Supplies State Control Through the SCLSR_EN1 and SDASR_EN2 Signals
        5. 5.22.2.5 VDD1 and VDD2 Voltage Control Through SCLSR_EN1 and SDASR_EN2 Signals
        6. 5.22.2.6 SMPS Switching Synchronization
  6. 6Detailed Description
    1. 6.1  Power Reference
    2. 6.2  Power Sources
    3. 6.3  Embedded Power Controller
      1. 6.3.1 State-Machine
      2. 6.3.2 Switch-On/-Off Sequences
      3. 6.3.3 Control Signals
        1. 6.3.3.1 SLEEP
        2. 6.3.3.2 PWRHOLD
        3. 6.3.3.3 BOOT0/BOOT1
        4. 6.3.3.4 NRESPWRON
        5. 6.3.3.5 CLK32KOUT
        6. 6.3.3.6 PWRON
        7. 6.3.3.7 INT1
        8. 6.3.3.8 SDASR_EN2 and SCLSR_EN1
        9. 6.3.3.9 GPIO_CKSYNC
      4. 6.3.4 Dynamic Voltage Frequency Scaling and Adaptive Voltage Scaling Operation
    4. 6.4  32-kHz RTC Clock
    5. 6.5  RTC
      1. 6.5.1 Time Calendar Registers
      2. 6.5.2 General Registers
      3. 6.5.3 Compensation Registers
    6. 6.6  Backup Battery Management
    7. 6.7  Backup Registers
    8. 6.8  I2C Interface
    9. 6.9  Thermal Monitoring and Shutdown
    10. 6.10 Interrupts
    11. 6.11 Package Description
    12. 6.12 Functional Registers
      1. 6.12.1 TPS65910_FUNC_REG Registers Mapping Summary
      2. 6.12.2 TPS65910_FUNC_REG Register Descriptions
  7. 7Device and Documentation Support
    1. 7.1 Device Support
      1. 7.1.1 Development Support
      2. 7.1.2 Device Nomenclature
    2. 7.2 Documentation Support
    3. 7.3 Related Links
    4. 7.4 Community Resources
    5. 7.5 Trademarks
    6. 7.6 Electrostatic Discharge Caution
    7. 7.7 Export Control Notice
    8. 7.8 Glossary
    9. 7.9 Additional Acronyms
  8. 8Mechanical Packaging and Orderable Information
    1. 8.1 Packaging Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

6 Detailed Description

6.1 Power Reference

The bandgap voltage reference is filtered by using an external capacitor connected across the VREF output and the analog ground REFGND (see Section 5.3, Recommended Operating Conditions). The VREF voltage is distributed and buffered inside the device.

6.2 Power Sources

The power resources provided by the TPS65910 device include inductor-based switched mode power supplies (SMPS) and linear low drop-out voltage regulators (LDOs). These supply resources provide the required power to the external processor cores and external components, and to modules embedded in the TPS65910 device.

Two of these SMPS have DVS capability SmartReflex Class 3 compatible. These SMPS provide independent core voltage domains to the host processor. The remaining SMPS provides supply voltage for the host processor I/Os.

Table 6-1 lists the power sources provided by the TPS65910 device.

Table 6-1 Power Sources

RESOURCE TYPE VOLTAGES POWER
VIO SMPS 1.5 V / 1.8 V / 2.5 V / 3.3 V 1000 mA
VDD1 SMPS 0.6 ... 1.5 in 12.5-mV steps 1500 mA
Programmable multiplication factor: x2, x3
VDD2 SMPS 0.6 ... 1.5 in 12.5-mV steps 1500 mA
Programmable multiplication factor: x2, x3
VDD3 SMPS 5 V 100 mA
VDIG1 LDO 1.2 V, 1.5 V, 1.8 V, 2.7 V 300 mA
VDIG2 LDO 1 V, 1.1 V, 1.2 V, 1.8 V 300 mA
VPLL LDO 1.0 V, 1.1 V, 1.8 V, 2.5 V 50 mA
VDAC LDO 1.8 V, 2.6 V, 2.8 V, 2.85 V 150 mA
VAUX1 LDO 1.8 V, 2.5 V, 2.8 V, 2.85 V 300 mA
VAUX2 LDO 1.8 V, 2.8 V, 2.9 V, 3.3 V 150 mA
VAUX33 LDO 1.8 V, 2.0 V, 2.8 V, 3.3 V 150 mA
VMMC LDO 1.8 V, 2.8 V, 3.0 V, 3.3 V 300 mA

6.3 Embedded Power Controller

The embedded power controller manages the state of the device and controls the power-up sequence.

6.3.1 State-Machine

The EPC supports the following states:

No supply: The main battery supply voltage is not high enough to power the VRTC regulator. A global reset is asserted in this case. Everything on the device is off.

Backup: The main battery supply voltage is high enough to enable the VRTC domain but not enough to switch on all the resources. In this state, the VRTC regulator is in backup mode and only the 32-K oscillator and RTC module are operating (if enabled). All other resources are off or under reset.

Off: The main battery supply voltage is high enough to start the power-up sequence but device power on is not enabled. All power supplies are in OFF state except VRTC.

Active: Device power-on enable conditions are met and regulated power supplies are on or can be enabled with full current capability.

Sleep: Device SLEEP enable conditions are met and some selected regulated power supplies are in low-power mode.

Figure 6-1 shows the transitions of the state-machine.

SWCS046-011.gifFigure 6-1 Embedded Power Control State-Machine

Device power-on enable conditions:

If none of the device power-on disable conditions is met, the following conditions are available to turn on and/or maintain the ON state of the device:

  • PWRON signal low level.
  • Or PWRHOLD signal high level.
  • Or DEV_ON control bit set to 1 (default inactive).
  • Or interrupt flag active (default INT1 low) while the device is off (NRESPWRON = 0) generates a power-on enable condition during a fixed delay (TDOINT1 pulse duration defined in Section 5.22.2, Power Control Timing).

The power-on enable condition pulse occurs only if the interrupt status bit is initially low (no previous identical interrupt pending in the status register).

The Interrupt sources expected when the device is off are:

  • PWRON low-level interrupt (PWRON_IT = 1 in INT_STS_REG register)
  • PWRHOLD rising-edge interrupt (PWRHOLD_IT = 1 in INT_STS_REG register)

The Interrupt sources expected if enabled when the device is off are:

  • RTC Alarm interrupt (RTC_ALARM_IT = 1 or RTC_PERIOD_IT = 1 in INT_STS_REG register)
  • First-time input voltage rising above VMBHI threshold (Boot mode or EEPROM dependent) and input voltage > VMBCH threshold (VMBCH_IT = 1 in INT_STS_REG register).

GPIO_CKSYNC cannot be used to turn on the device (OFF-to-ACTIVE state transition), even if its associated interrupt is not masked, but can be used as an interrupt source to wake up the device from SLEEP-to-ACTIVE state.

Device power-on disable conditions:

  • PWRON signal low level during more than the long-press delay: tdPWRONLP (can be disabled though register programming). The interrupt corresponding to this condition is PWRON_LP_IT in the INT_STS_REG register.
  • Or Die temperature has reached the thermal shutdown threshold.
  • Or DEV_OFF or DEV_OFF_RST control bit set to 1 (value of DEV_OFF is cleared when the device is in OFF state).

Device SLEEP enable conditions:

  • SLEEP signal low level (default, or high level depending on the programmed polarity)
  • And DEV_SLP control bit set to 1
  • And interrupt flag inactive (default INT1 high): no nonmasked interrupt pending

The SLEEP state can be controlled by programming DEV_SLP and keeping the SLEEP signal in the active polarity state, or it can be controlled through the SLEEP signal setting the DEV_SLP bit to 1 once, after device turn-on.

6.3.2 Switch-On/-Off Sequences

The power sequence is the automated switching on of the device resources when an off-to-active transition takes place.

The device supports three embedded power sequences selectable by the device BOOT pins.

BOOT0 BOOT1 Processor Supported
0 0 AM3517, AM3505
1 0 OMAP3 Family, AM3715/03, DM3730/25
0 1 EEPROM sequence

Details of the boot sequence timing are given in Section 5.22.1. EEPROM sequences can be used for specific power up sequence for corresponding application processor. For details of EEPROM sequence refer to the user guides on the product folder: http://focus.ti.com/docs/prod/folders/print/tps65910.html.

6.3.3 Control Signals

6.3.3.1 SLEEP

When none of the device sleep-disable conditions are met, a falling edge (default, or rising edge, depending on the programmed polarity) of this signal causes an ACTIVE-to-SLEEP state transition of the device. A rising edge (default, or falling edge, depending on the programmed polarity) causes a transition back to ACTIVE state. This input signal is level sensitive and no debouncing is applied.

While the device is in SLEEP state, predefined resources are automatically set in their low-power mode or off. Resources can be kept in their active mode: (full-load capability), programming the SLEEP_KEEP_LDO_ON and the SLEEP_KEEP_RES_ON registers. These registers contain 1 bit per power resource. If the bit is set to 1, then that resource stays in active mode when the device is in SLEEP state. 32KCLKOUT is also included in the SLEEP_KEEP_RES_ON register and the 32-kHz clock output is maintained in SLEEP state if the corresponding mask bit is set.

6.3.3.2 PWRHOLD

When none of the device power-on disable conditions are met, a rising edge of this signal causes an OFF-to-ACTIVE state transition of the device and a falling edge causes a transition back to OFF state. Typically, this signal is used to control the device in a slave configuration. It can be connected to the SYSEN output signal from other TPS659xx devices, or the NRESPWRON signal of another TPS65910 device. This input signal is level sensitive and no debouncing is applied.

A rising edge of PWRHOLD is highlighted though an associated interrupt.

6.3.3.3 BOOT0/BOOT1

These signals determine which processor the device is working with and hence which power-up sequence is needed. See Section 5.22.1 for more details. There is no debouncing on this input signal.

6.3.3.4 NRESPWRON

This signal is used as the reset to the processor. It is held low until the ACTIVE state is reached. See Section 5.22.2 to get detailed timing.

6.3.3.5 CLK32KOUT

This signal is the output of the 32K oscillator, which can be enabled or not during the power-on sequence, depending on the Boot mode. It can be enabled and disabled by register bit, during ACTIVE state of the device. CLK32KOUT output can also be enabled or not during SLEEP state of the device depending on the SLEEPMASK register programming.

6.3.3.6 PWRON

A falling edge on this signal causes after tdbPWRONF debouncing delay (defined in Figure 5-4 and Table 5-5) an OFF-to-ACTIVE state or SLEEP-to-ACTIVE state transition of the device and makes the corresponding interrupt (PWRON_IT) active. The PWRON input is connected to an external push-button. The built-in debouncing time defines a minimum button press duration that is required for button press detection. Any button press duration which is lower than this value is ignored, considered an accidental touch.

After an OFF-to-ACTIVE state transition, the PMIC maintains ACTIVE during tdOINT delay, if the button is released. After this delay if none of the device enabling conditions is set by the processor supplied, the PMIC automatically turns off. If the button is not released, the PMIC maintains ACTIVE up to tdPWRONLPTO, because PWRON low is a device enabling condition. After a SLEEP-to-ACTIVE state transition, the PMIC maintains ACTIVE as long as an interrupt is pending.

If the device is already in ACTIVE state, a PWRON low level makes the corresponding interrupt (PWRON_IT) active.

When the PMIC is in ACTIVE mode, if the button is pressed for longer time than tdPWRONLP, the PMIC generates the PWON_LP_IT interrupt. If the processor does not acknowledge the long press interrupt within a period of tdPWRONLPTO – tdPWRONLP, the PMIC goes to OFF mode and shuts down the DCDCs and LDOs.

6.3.3.7 INT1

INT1 signal (default active low) warns the host processor of any event that occurred on the TPS65910 device. The host processor can then poll the interrupt from the interrupt status register through I2C to identify the interrupt source. A low level (default setting) indicates an active interrupt, highlighted in the INT_STS_REG register. The polarity of INT1 can be set by programming the IT_POL control bit.

Any (not masked or masked) interrupt detection causes a POWER ON enable condition during a fixed delay tDOINT1 (only) when the device is in OFF state (when NRESPWON signal is low). Any (not masked) interrupt detection is causing a device wakeup from SLEEP state up to acknowledge of the pending interrupt. Any of the interrupt sources can be masked by programming the INT_MSK_REG register. When an interrupt is masked, its corresponding interrupt status bit is still updated, but the INT1 flag is not activated.

Interrupt source masking can be used to mask a device switch-on event. Because interrupt flag active is a POWER ON enable condition during tDOINT1 delay, any interrupt not masked must be cleared to allow turn off of the device after the tDOINT1 POWER ON enable pulse duration.. See section: Interrupts, for interrupt sources definition.

6.3.3.8 SDASR_EN2 and SCLSR_EN1

SDASR_EN2 and SCLSR_EN1 are the data and clock signals of the serial control interface (SR-I2C) dedicated to SmartReflex applications. These signals can also be programmed to be used as enable signals of one or several supplies, when the device is on (NRESPWRON high). A resource assigned to SDASR_EN2 or SCLSR_EN1 control automatically disables the serial control interface.

Programming EN1_LDO_ASS_REG, EN2_LDO_REG, and SLEEP_KEEP_LDO_ON_REG registers: SCLSR_EN1 and SDASR_EN2 signals can be used to control the turn on/off or sleep state of any LDO type supplies.

Programming EN1_SMPS_ASS_REG, EN2_SMPS_ASS_REG, and SLEEP_KEEP_RES_ON registers: SCLSR_EN1 and SDASR_EN2 signals can be used to control the turn on/off or low-power state (PFM mode) of SMPS type supplies.

SDASR_EN2 and SCLSR_EN1 can be used to set output voltage of VDD1 and VDD2 SMPS from a roof to a floor value, preprogrammed in the VDD1_OP_REG, VDD2_OP_REG, and teh VDD1_SR_REG, VDD2_SR_REG registers. Tun-off of VDD1 and VDD2 can also be programmed either in VDD1_OP_REG, VDD2_OP_REG or in VDD1_SR_REG, VDD2_SR_REG registers.

When a supply is controlled through SCLSR_EN1 or SCLSR_EN2 signals, its state is no longer driven by the device SLEEP state.

6.3.3.9 GPIO_CKSYNC

GPIO_CKSYNC is a configurable open-drain digital I/O: directivity, debouncing delay and internal pullup can be programmed in the GPIO0_REG register. GPIO_CKSYNC cannot be used to turn on the device (OFF-to-ACTIVE state transition), even if its associated interrupt is not masked, but can be used as an interrupt source to wake up the device from SLEEP-to-ACTIVE state.

Programming DCDCCKEXT = 1, VDD1, VDD2, VIO, and VDD3 DC-DC switching can be synchronized using a 3-MHz clock set though the GPIO_CKSYNC pin.

6.3.4 Dynamic Voltage Frequency Scaling and Adaptive Voltage Scaling Operation

Dynamic voltage frequency scaling (DVFS) operation: a supply voltage value corresponding to a targeted frequency of the digital core supplied is programmed in VDD1_OP_REG or VDD2_OP_REG registers.

The slew rate of the voltage supply reaching a new VDD1_OP_REG or VDD2_OP_REG programmed value is limited to 12.5 mV/µs, fixed value. Adaptative voltage scaling (AVS) operation: a supply voltage value corresponding to a supply voltage adjustment is programmed in VDD1_SR_REG or VDD2_SR_REG registers. The supply voltage is then intended to be tuned by the digital core supplied, based its performance self-evaluation. The slew rate of VDD1 or VDD2 voltage supply reaching a new programmed value is programmable though the VDD1_REG or VDD2_REG register, respectively.

A serial control interface (SR-I2C) is dedicated to SmartReflex applications such as DVFS and class 3 AVS, and thus gives access to the VDD1_OP_REG, VDD1_SR_REG, and VDD2_OP_REG, VDD2_SR_REG register.

A general-purpose serial control interface (CTL-I2C) also gives access to these registers, if SR_CTL_I2C_SEL control bit is set to 1 in the DEVCTRL_REG register (default inactive).

Both control interfaces are compliant with HS-I2C specification (100 kbps, 400 kbps, or 3.4 Mbps).

Figure 6-2 shows an example of a SmartReflex operation. To optimize power efficiency, the voltage domains of the host processor uses the DVFS and AVS features provided by SmartReflex.

SWCS046-012.gif
1. TSR: Time used by the SmartReflex controller
2. TI2C: Time used for data transfer through the I2C interface
3. TSMPS: Time required by the SMPS to converge to new voltage value
Figure 6-2 SmartReflex Operation Example

6.4 32-kHz RTC Clock

The TPS65910 device can provide a 32-kHz clock to the platform through the CLK32KOUT output, the source of this 32-kHz clock can be:

  • 32-kHz crystal connected from OSC32IN to OSC32KOUT pins
  • A square-wave 32-kHz clock signal applied to OSC32IN input (OSC32KOUT kept floating).
  • Internal 32-kHz RC oscillator, to reduce the BOM, if an accurate clock is not needed by the system.

Default selection of a 32-kHz RC oscillator versus 32-kHz crystal oscillator or external square-wave 32-kHz clock depends on the Boot mode or device version (EEPROM programming):

  • BOOT1 = 0, BOOT0 = 1: quartz oscillator or external square wave 32-kHz clock default
  • BOOT1 = 0, BOOT0 = 0: 32-kHz RC oscillator default

Switching from the 32-kHz RC oscillator to the 32-kHz crystal oscillator or external square-wave 32-kHz clock can also be programmed though DEVCTRL_REG register, taking benefit of the shorter turn-on time of the internal RC oscillator.

Switching from the 32-kHz crystal oscillator or external square-wave clock to the RC oscillator is not supported.

SWCS046-013.gifFigure 6-3 Crystal Oscillator 32-kHz Clock

6.5 RTC

The RTC, which is driven by the 32-kHz clock, provides the alarm and timekeeping functions. The RTC is kept supplied when the device is in the OFF or the BACKUP state.

The main functions of the RTC block are:

  • Time information (seconds/minutes/hours) directly in binary-coded decimal (BCD) format
  • Calendar information (Day/Month/Year/Day of the week) directly in BCD code up to year 2099
  • Programmable interrupts generation: The RTC can generate two interrupts: a timer interrupt RTC_PERIOD_IT periodically (1s/1m/1h/1d period) and an alarm interrupt RTC_ALARM_IT at a precise time of the day (alarm function). These interrupts are enabled using IT_ALARM and IT_TIMER control bits. Periodically interrupts can be masked during the SLEEP period to avoid host interruption and are automatically unmasked after SLEEP wakeup (using the IT_SLEEP_MASK_EN control bit).
  • Oscillator frequency calibration and time correction

SWCS046-014.gifFigure 6-4 RTC Digital Section Block Diagram

NOTE

INT_ALARM can generate a wakeup of the platform.

INT_TIMER cannot generate a wakeup of the platform.

6.5.1 Time Calendar Registers

All the time and calendar information are available in these dedicated registers, called TC registers. Values of the TC registers are written in BCD format.

  1. Year data ranges from 00 to 99
    • Leap year = Year divisible by four (2000, 2004, 2008, 2012...)
    • Common year = other years
  2. Month data ranges from 01 to 12
  3. Day value ranges from:
    • 1 to 31 when months are 1, 3, 5, 7, 8, 10, 12
    • 1 to 30 when months are 4, 6, 9, 11
    • 1 to 29 when month is 2 and year is a leap year
    • 1 to 28 when month is 2 and year is a common year
  4. Week value ranges from 0 to 6
  5. Hour value ranges from 00 to 23 in 24-hour mode and ranges from 1 to 12 in AM/PM mode
  6. Minutes value ranges from 0 to 59
  7. Seconds value ranges from 0 to 59

To modify the current time, software writes the new time into TC registers to fix the time/calendar information. The DBB can write into TC registers without stopping the RTC. In addition, software can stop the RTC by clearing the STOP_RTC bit of the control register and check the RUN bit of the status to be sure that the RTC is frozen. Then update TC values, and then restart the RTC by setting the STOP_RTC bit.

Example: Time is 10H54M36S PM (PM_AM mode set), 2008 September 5, previous register values are:

Register Value
SECONDS_REG 0x36
MINUTES_REG 0x54
HOURS_REG 0x90
DAYS_REG 0x05
MONTHS_REG 0x09
YEARS_REG 0x08

The user can round to the closest minute, by setting the ROUND_30S register bit. TC values are set to the closest minute value at the next second. The ROUND_30S bit is automatically cleared when the rounding time is performed.

Example:

  • If current time is 10H59M45S, a round operation changes time to 11H00M00S.
  • if current time is 10H59M29S, a round operation changes time to 10H59M00S.

6.5.2 General Registers

Software can access the RTC_STATUS_REG and RTC_CTRL_REG registers at any time (except for the RTC_CTRL_REG[5] bit, which must be changed only when the RTC is stopped).

6.5.3 Compensation Registers

The RTC_COMP_MSB_REG and RTC_COMP_LSB_REG registers must respect the available access period. These registers must be updated before each compensation process. For example, software can load the compensation value into these registers after each hour event, during an available access period.

SWCS046-015.gifFigure 6-5 RTC Compensation Scheduling

This drift can be balanced to compensate for any inaccuracy of the 32-kHz oscillator. Software must calibrate the oscillator frequency, calculate the drift compensation versus one time hour period; and then load the compensation registers with the drift compensation value. Indeed, if the AUTO_COMP_EN bit in the RTC_CTRL_REG is enabled, the value of COMP_REG (in twos-complement) is added to the RTC 32-kHz counter at each hour and one second. When COMP_REG is added to the RTC 32-kHz counter, the duration of the current second becomes (32768 - COMP_REG)/32768s; so, the RTC can be compensated with a 1/32768 s/hour time unit accuracy.

NOTE

The compensation is considered once written into the registers.

6.6 Backup Battery Management

The device includes a back-up battery switch connecting the VRTC regulator input to a main battery (VCC7) or to a back-up battery (VBACKUP), depending on the batteries voltage value.

The VRTC supply can then be maintained during a BACKUP state as far as the input voltage is high enough (>VBNPR threshold). Below the VBNPR voltage threshold the digital core of the device is set under reset by internal signal POR (Power-on Reset).

The back-up domain functions which are always supplied from VRTC comprehend:

  • The internal 32-kHz oscillator
  • Backup registers

The back-up battery can be charged from the main battery through an embedded charger. The back-up battery charge voltage and enable is controlled through BBCH_REG register programming. This register content is maintained during the device Backup state.

Hence enabled the back-up battery charge is maintained as far as the main battery voltage is higher than the VMBLO threshold and the back-up battery voltage.

6.7 Backup Registers

As part of the RTC the device contains five 8-bit registers which can be used for storage by the application firmware when the external host is powered down. These registers retain their content as long as the VRTC is active.

6.8 I2C Interface

A general-purpose serial control interface (CTL-I2C) allows read and write access to the configuration registers of all resources of the system.

A second serial control interface (SR-I2C) is dedicated to SmartReflex applications such as DVFS or AVS.

Both control interfaces are compliant with HS-I2C specification.

These interfaces support the standard slave mode (100 Kbps), Fast mode (400 Kbps), and high-speed mode (3.4 Mbps). The general-purpose I2C module using one slave hard-coded address (ID1 = 2Dh). The SmartReflex I2C module uses one slave hard-coded address (ID0 = 12h). The master mode is not supported.

Addressing: Seven-bit mode addressing device

They do not support the following features:

  • 10-bit addressing
  • General call

6.9 Thermal Monitoring and Shutdown

A thermal protection module monitors the junction temperature of the device versus two thresholds:

  • Hot-die temperature threshold
  • Thermal shutdown temperature threshold

When the hot-die temperature threshold is reached an interrupt is sent to software to close the noncritical running tasks.

When the thermal shutdown temperature threshold is reached, the TPS65910 device is set under reset and a transition to OFF state is initiated. Then the power-on enable conditions of the device is not considered until the die temperature has decreased below the hot-die threshold. An hysteresis is applied to the hot-die and shutdown threshold, when detecting a falling edge of temperature, and both detection are debounced to avoid any parasitic detection. The TPS65910 device allows programming of four hot-die temperature thresholds to increase the flexibility of the system.

By default, the thermal protection is enabled in ACTIVE state, but can be disabled through programming register THERM_REG. The thermal protection can be enabled in SLEEP state programming register SLEEP_KEEP_RES_ON. The thermal protection is automatically enabled during an OFF-to-ACTIVE state transition and is kept enabled in OFF state after a switch-off sequence caused by a thermal shutdown event. Transition to OFF state sequence caused by a thermal shutdown event is highlighted in the INT_STS_REG status register. Recovery from this OFF state is initiated (switch-on sequence) when the die temperature falls below the hot-die temperature threshold.

Hot-die and thermal shutdown temperature threshold detections state can be monitored or masked by reading or programming the THERM_REG register. Hot-die interrupt can be masked by programming the INT_MSK_REG register.

6.10 Interrupts

Table 6-2 Interrupt Sources

Interrupt Description
RTC_ALARM_IT RTC alarm event: Occurs at programmed determinate date and time
(running in ACTIVE, OFF, and SLEEP state, default inactive)
RTC_PERIOD_IT RTC periodic event: Occurs at programmed regular period of time (every second or minute) (running in ACTIVE, OFF, and SLEEP state, default inactive)
HOT_DIE_IT The embedded thermal monitoring module has detected a die temperature above the hot-die detection threshold (running in ACTIVE and SLEEP state)
Level sensitive interrupt.
PWRHOLD_IT PWRHOLD signal rising edge
PWRON_LP_IT PWRON is low during more than the long-press delay: tdPWRONLP (can be disable though register programming).
PWRON_IT PWRON is low while the device is on (running in ACTIVE and SLEEP state) or PWON was low while the device was off (causing a device turn-on). Level-sensitive interrupt
VMBHI_IT The battery voltage rise above the VMBHI threshold: NOSUPPLY to Off or Backup-to-Off device states transition (first battery plug or battery voltage bounce detection). This interrupt source can be disabled through EEPROM programming (VMBHI_IT_DIS). Edge-sensitive interrupt
VMBDCH_IT The battery voltage falls down below the VMBDCH threshold(running in ACTIVE and SLEEP state, if enabled programming VMBCH_VSEL). Edge-sensitive interrupt
GPIO0_R_IT GPIO_CKSYNC rising-edge detection (available in ACTIVE and SLEEP state)
GPIO0_F_IT GPIO_CKSYNC falling-edge detection (available in ACTIVE and SLEEP state)

INT1 signal (active low) warns the host processor of any event that occurred on the TPS65910 device. The host processor can then poll the interrupt from the interrupt status register via I2C to identify the interrupt source. Each interrupt source can be individually masked via the interrupt mask register.

6.11 Package Description

The following are the package descriptions of the TPS65910 PMU devices:

  • Package type:

Package TPS65910
Type RSL QFN-N48
Size (mm) 6x6
Substrate layers 1 layer
Pitch ball array (mm) 0.4 mm
ViP (via-in-pad) No
Number of balls 48
Thickness (mm) (max height including balls) 1
Others Green, ROHS-compliant

  • Moisture sensitivity level target: JEDEC MSL3 at 260°C

6.12 Functional Registers

6.12.1 TPS65910_FUNC_REG Registers Mapping Summary

Table 6-3 TPS65910_FUNC_REG Register Summary

Register Name Type Register Width (Bits) Register Reset Address Offset
SECONDS_REG RW 8 0x00 0x00
MINUTES_REG RW 8 0x00 0x01
HOURS_REG RW 8 0x00 0x02
DAYS_REG RW 8 0x01 0x03
MONTHS_REG RW 8 0x01 0x04
YEARS_REG RW 8 0x00 0x05
WEEKS_REG RW 8 0x00 0x06
ALARM_SECONDS_REG RW 8 0x00 0x08
ALARM_MINUTES_REG RW 8 0x00 0x09
ALARM_HOURS_REG RW 8 0x00 0x0A
ALARM_DAYS_REG RW 8 0x01 0x0B
ALARM_MONTHS_REG RW 8 0x01 0x0C
ALARM_YEARS_REG RW 8 0x00 0x0D
RTC_CTRL_REG RW 8 0x00 0x10
RTC_STATUS_REG RW 8 0x80 0x11
RTC_INTERRUPTS_REG RW 8 0x00 0x12
RTC_COMP_LSB_REG RW 8 0x00 0x13
RTC_COMP_MSB_REG RW 8 0x00 0x14
RTC_RES_PROG_REG RW 8 0x27 0x15
RTC_RESET_STATUS_REG RW 8 0x00 0x16
BCK1_REG RW 8 0x00 0x17
BCK2_REG RW 8 0x00 0x18
BCK3_REG RW 8 0x00 0x19
BCK4_REG RW 8 0x00 0x1A
BCK5_REG RW 8 0x00 0x1B
PUADEN_REG RW 8 0x9F 0x1C
REF_REG RW 8 0x01 0x1D
VRTC_REG RW 8 0x01 0x1E
VIO_REG RW 8 0x00 0x20
VDD1_REG RW 8 0x0C 0x21
VDD1_OP_REG RW 8 0x00 0x22
VDD1_SR_REG RW 8 0x00 0x23
VDD2_REG RW 8 0x04 0x24
VDD2_OP_REG RW 8 0x00 0x25
VDD2_SR_REG RW 8 0x00 0x26
VDD3_REG RW 8 0x04 0x27
VDIG1_REG RW 8 0x00 0x30
VDIG2_REG RW 8 0x00 0x31
VAUX1_REG RW 8 0x00 0x32
VAUX2_REG RW 8 0x00 0x33
VAUX33_REG RW 8 0x00 0x34
VMMC_REG RW 8 0x00 0x35
VPLL_REG RW 8 0x00 0x36
VDAC_REG RW 8 0x00 0x37
THERM_REG RW 8 0x0D 0x38
BBCH_REG RW 8 0x00 0x39
DCDCCTRL_REG RW 8 0x3B 0x3E
DEVCTRL_REG RW 8 0x40 0x3F
DEVCTRL2_REG RW 8 0x34 0x40
SLEEP_KEEP_LDO_ON_REG RW 8 0x00 0x41
SLEEP_KEEP_RES_ON_REG RW 8 0x00 0x42
SLEEP_SET_LDO_OFF_REG RW 8 0x00 0x43
SLEEP_SET_RES_OFF_REG RW 8 0x00 0x44
EN1_LDO_ASS_REG RW 8 0x00 0x45
EN1_SMPS_ASS_REG RW 8 0x00 0x46
EN2_LDO_ASS_REG RW 8 0x00 0x47
EN2_SMPS_ASS_REG RW 8 0x00 0x48
RESERVED RW 8 0x00 0x49
RESERVED RW 8 0x00 0x4A
INT_STS_REG RW 8 0x00 0x50
INT_MSK_REG RW 8 0x02 0x51
INT_STS2_REG RW 8 0x00 0x52
INT_MSK2_REG RW 8 0x00 0x53
GPIO0_REG RW 8 0x0A 0x60
JTAGVERNUM_REG RO 8 0x00 0x80

6.12.2 TPS65910_FUNC_REG Register Descriptions

Table 6-4 SECONDS_REG

Address Offset 0x00
Physical Address Instance
Description RTC register for seconds
Type RW

7 6 5 4 3 2 1 0
Reserved SEC1 SEC0

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:4 SEC1 Second digit of seconds (range is 0 up to 5) RW 0x0
3:0 SEC0 First digit of seconds (range is 0 up to 9) RW 0x0

Table 6-5 MINUTES_REG

Address Offset 0x01
Physical Address Instance
Description RTC register for minutes
Type RW

7 6 5 4 3 2 1 0
Reserved MIN1 MIN0

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:4 MIN1 Second digit of minutes (range is 0 up to 5) RW 0x0
3:0 MIN0 First digit of minutes (range is 0 up to 9) RW 0x0

Table 6-6 HOURS_REG

Address Offset 0x02
Physical Address Instance
Description RTC register for hours
Type RW

7 6 5 4 3 2 1 0
PM_NAM Reserved HOUR1 HOUR0

Bits Field Name Description Type Reset
7 PM_NAM Only used in PM_AM mode (otherwise it is set to 0)
0 is AM
1 is PM
RW 0
6 Reserved Reserved bit RO
R returns 0s
0
5:4 HOUR1 Second digit of hours (range is 0 up to 2) RW 0x0
3:0 HOUR0 First digit of hours (range is 0 up to 9) RW 0x0

Table 6-7 DAYS_REG

Address Offset 0x03
Physical Address Instance
Description RTC register for days
Type RW

7 6 5 4 3 2 1 0
Reserved DAY1 DAY0

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R returns 0s
0x0
5:4 DAY1 Second digit of days (range is 0 up to 3) RW 0x0
3:0 DAY0 First digit of days (range is 0 up to 9) RW 0x1

Table 6-8 MONTHS_REG

Address Offset 0x04
Physical Address Instance
Description RTC register for months
Type RW

7 6 5 4 3 2 1 0
Reserved MONTH1 MONTH0

Bits Field Name Description Type Reset
7:5 Reserved Reserved bit RO
R returns 0s
0x0
4 MONTH1 Second digit of months (range is 0 up to 1) RW 0
3:0 MONTH0 First digit of months (range is 0 up to 9) RW 0x1

Table 6-9 YEARS_REG

Address Offset 0x05
Physical Address Instance
Description RTC register for day of the week
Type RW

7 6 5 4 3 2 1 0
YEAR1 YEAR0

Bits Field Name Description Type Reset
7:4 YEAR1 Second digit of years (range is 0 up to 9) RW 0x0
3:0 YEAR0 First digit of years (range is 0 up to 9) RW 0x0

Table 6-10 WEEKS_REG

Address Offset 0x06
Physical Address Instance
Description RTC register for day of the week
Type RW

7 6 5 4 3 2 1 0
Reserved WEEK

Bits Field Name Description Type Reset
7:3 Reserved Reserved bit RO
R returns 0s
0x00
2:0 WEEK First digit of day of the week (range is 0 up to 6) RW 0

Table 6-11 ALARM_SECONDS_REG

Address Offset 0x08
Physical Address Instance
Description RTC register for alarm programming for seconds
Type RW

7 6 5 4 3 2 1 0
Reserved ALARM_SEC1 ALARM_SEC0

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:4 ALARM_SEC1 Second digit of alarm programming for seconds (range is 0 up to 5) RW 0x0
3:0 ALARM_SEC0 First digit of alarm programming for seconds (range is 0 up to 9) RW 0x0

Table 6-12 ALARM_MINUTES_REG

Address Offset 0x09
Physical Address Instance
Description RTC register for alarm programming for minutes
Type RW

7 6 5 4 3 2 1 0
Reserved ALARM_MIN1 ALARM_MIN0

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:4 ALARM_MIN1 Second digit of alarm programming for minutes (range is 0 up to 5) RW 0x0
3:0 ALARM_MIN0 First digit of alarm programming for minutes (range is 0 up to 9) RW 0x0

Table 6-13 ALARM_HOURS_REG

Address Offset 0x0A
Physical Address Instance
Description RTC register for alarm programming for hours
Type RW

7 6 5 4 3 2 1 0
ALARM_PM_NAM Reserved ALARM_HOUR1 ALARM_HOUR0

Bits Field Name Description Type Reset
7 ALARM_PM_NAM Only used in PM_AM mode for alarm programming (otherwise it is set to 0)
0 is AM
1 is PM
RW 0
6 Reserved Reserved bit RO
R returns 0s
0
5:4 ALARM_HOUR1 Second digit of alarm programming for hours (range is 0 up to 2) RW 0x0
3:0 ALARM_HOUR0 First digit of alarm programming for hours (range is 0 up to 9) RW 0x0

Table 6-14 ALARM_DAYS_REG

Address Offset 0x0B
Physical Address Instance
Description RTC register for alarm programming for days
Type RW

7 6 5 4 3 2 1 0
Reserved ALARM_DAY1 ALARM_DAY0

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R Special
0x0
5:4 ALARM_DAY1 Second digit of alarm programming for days (range is 0 up to 3) RW 0x0
3:0 ALARM_DAY0 First digit of alarm programming for days (range is 0 up to 9) RW 0x1

Table 6-15 ALARM_MONTHS_REG

Address Offset 0x0C
Physical Address Instance
Description RTC register for alarm programming for months
Type RW

7 6 5 4 3 2 1 0
Reserved ALARM_MONTH1 ALARM_MONTH0

Bits Field Name Description Type Reset
7:5 Reserved Reserved bit RO
R returns 0s
0x0
4 ALARM_MONTH1 Second digit of alarm programming for months (range is 0 up to 1) RW 0
3:0 ALARM_MONTH0 First digit of alarm programming for months (range is 0 up to 9) RW 0x1

Table 6-16 ALARM_YEARS_REG

Address Offset 0x0D
Physical Address Instance
Description RTC register for alarm programming for years
Type RW

7 6 5 4 3 2 1 0
ALARM_YEAR1 ALARM_YEAR0

Bits Field Name Description Type Reset
7:4 ALARM_YEAR1 Second digit of alarm programming for years (range is 0 up to 9) RW 0x0
3:0 ALARM_YEAR0 First digit of alarm programming for years (range is 0 up to 9) RW 0x0

Table 6-17 RTC_CTRL_REG

Address Offset 0x10
Physical Address Instance
Description RTC control register:
NOTES: A dummy read of this register is necessary before each I2C read in order to update the ROUND_30S bit value.
Type RW

7 6 5 4 3 2 1 0
RTC_V_OPT GET_TIME SET_32_COUNTER TEST_MODE MODE_12_24 AUTO_COMP ROUND_30S STOP_RTC

Bits Field Name Description Type Reset
7 RTC_V_OPT RTC date / time register selection:
0: Read access directly to dynamic registers (SECONDS_REG, MINUTES_REG, HOURS_REG, DAYS_REG, MONTHS_REG, YEAR_REG, WEEKS_REG)
1: Read access to static shadowed registers: (see GET_TIME bit).
RW 0
6 GET_TIME When writing a 1 into this register, the content of the dynamic registers (SECONDS_REG, MINUTES_REG, HOURS_REG, DAYS_REG, MONTHS_REG, YEAR_REG and WEEKS_REG) is transferred into static shadowed registers. Each update of the shadowed registers needs to be done by re-asserting GET_TIME bit to 1 (that is, reset it to 0 and then re-write it to 1) RW 0
5 SET_32_COUNTER 0: No action
1: set the 32-kHz counter with COMP_REG value.
It must only be used when the RTC is frozen.
RW 0
4 TEST_MODE 0: functional mode
1: test mode (Auto compensation is enable when the 32kHz counter reaches at its end)
RW 0
3 MODE_12_24 0: 24 hours mode
1: 12 hours mode (PM-AM mode)
It is possible to switch between the two modes at any time without disturbed the RTC, read or write are always performed with the current mode.
RW 0
2 AUTO_COMP 0: No auto compensation
1: Auto compensation enabled
RW 0
1 ROUND_30S 0: No update
1: When a one is written, the time is rounded to the closest minute.
This bit is a toggle bit, the micro-controller can only write one and RTC clears it. If the micro-controller sets the ROUND_30S bit and then read it, the micro-controller will read one until the rounded to the closet.
RW 0
0 STOP_RTC 0: RTC is frozen
1: RTC is running
RW 0

Table 6-18 RTC_STATUS_REG

Address Offset 0x11
Physical Address Instance
Description RTC status register:
NOTES: A dummy read of this register is necessary before each I2C read in order to update the status register value.
Type RW

7 6 5 4 3 2 1 0
POWER_UP ALARM EVENT_1D EVENT_1H EVENT_1M EVENT_1S RUN Reserved

Bits Field Name Description Type Reset
7 POWER_UP Indicates that a reset occurred (bit cleared to 0 by writing 1).
POWER_UP is set by a reset, is cleared by writing one in this bit.
RW 1
6 ALARM Indicates that an alarm interrupt has been generated (bit clear by writing 1).
The alarm interrupt keeps its low level, until the micro-controller write 1 in the ALARM bit of the RTC_STATUS_REG register.
The timer interrupt is a low-level pulse (15 µs duration).
RW 0
5 EVENT_1D One day has occurred RO 0
4 EVENT_1H One hour has occurred RO 0
3 EVENT_1M One minute has occurred RO 0
2 EVENT_1S One second has occurred RO 0
1 RUN 0: RTC is frozen
1: RTC is running
This bit shows the real state of the RTC, indeed because of STOP_RTC signal was resynchronized on 32-kHz clock, the action of this bit is delayed.
RO 0
0 Reserved Reserved bit RO
R returns 0s
0

Table 6-19 RTC_INTERRUPTS_REG

Address Offset 0x12
Physical Address Instance
Description RTC interrupt control register
Type RW

7 6 5 4 3 2 1 0
Reserved IT_SLEEP_MASK_EN IT_ALARM IT_TIMER EVERY

Bits Field Name Description Type Reset
7:5 Reserved Reserved bit RO
R returns 0s
0x0
4 IT_SLEEP_MASK_EN 1: Mask periodic interrupt while the TPS65910 device is in SLEEP mode. Interrupt event is back up in a register and occurred as soon as the TPS65910 device is no more in SLEEP mode.
0: Normal mode, no interrupt masked
RW 0
3 IT_ALARM Enable one interrupt when the alarm value is reached (TC ALARM registers) by the TC registers RW 0
2 IT_TIMER Enable periodic interrupt
0: interrupt disabled
1: interrupt enabled
RW 0
1:0 EVERY Interrupt period
00: every second
01: every minute
10: every hour
11: every day
RW 0x0

Table 6-20 RTC_COMP_LSB_REG

Address Offset 0x13
Physical Address Instance
Description RTC compensation register (LSB)
Notes: This register must be written in 2-complement.
This means that to add one 32kHz oscillator period every hour, micro-controller needs to write FFFF into RTC_COMP_MSB_REG & RTC_COMP_LSB_REG.
To remove one 32-kHz oscillator period every hour, micro-controller needs to write 0001 into RTC_COMP_MSB_REG & RTC_COMP_LSB_REG.
The 7FFF value is forbidden.
Type RW

7 6 5 4 3 2 1 0
RTC_COMP_LSB

Bits Field Name Description Type Reset
7:0 RTC_COMP_LSB This register contains the number of 32-kHz periods to be added into the 32-kHz counter every hour [LSB] RW 0x00

Table 6-21 RTC_COMP_MSB_REG

Address Offset 0x14
Physical Address Instance
Description RTC compensation register (MSB)
Notes: See RTC_COMP_LSB_REG Notes.
Type RW

7 6 5 4 3 2 1 0
RTC_COMP_MSB

Bits Field Name Description Type Reset
7:0 RTC_COMP_MSB This register contains the number of 32-kHz periods to be added into the 32-kHz counter every hour [MSB] RW 0x00

Table 6-22 RTC_RES_PROG_REG

Address Offset 0x15
Physical Address Instance
Description RTC register containing oscillator resistance value
Type RW

7 6 5 4 3 2 1 0
Reserved SW_RES_PROG

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R returns 0s
0x0
5:0 SW_RES_PROG Value of the oscillator resistance RW 0x27

Table 6-23 RTC_RESET_STATUS_REG

Address Offset 0x16
Physical Address Instance
Description RTC register for reset status
Type RW

7 6 5 4 3 2 1 0
Reserved RESET_STATUS

Bits Field Name Description Type Reset
7:1 Reserved Reserved bit RO
R returns 0s
0x0
0 RESET_STATUS RW 0x0

Table 6-24 BCK1_REG

Address Offset 0x17
Physical Address Instance
Description Backup register which can be used for storage by the application firmware when the external host is powered down. These registers will retain their content as long as the VRTC is active.
Type RW

7 6 5 4 3 2 1 0
BCKUP

Bits Field Name Description Type Reset
7:0 BCKUP Backup bit RW 0x00

Table 6-25 BCK2_REG

Address Offset 0x18
Physical Address Instance
Description Backup register which can be used for storage by the application firmware when the external host is powered down. These registers will retain their content as long as the VRTC is active.
Type RW

7 6 5 4 3 2 1 0
BCKUP

Bits Field Name Description Type Reset
7:0 BCKUP Backup bit RW 0x00

Table 6-26 BCK3_REG

Address Offset 0x19
Physical Address Instance
Description Backup register which can be used for storage by the application firmware when the external host is powered down. These registers will retain their content as long as the VRTC is active.
Type RW

7 6 5 4 3 2 1 0
BCKUP

Bits Field Name Description Type Reset
7:0 BCKUP Backup bit RW 0x00

Table 6-27 BCK4_REG

Address Offset 0x1A
Physical Address Instance
Description Backup register which can be used for storage by the application firmware when the external host is powered down. These registers will retain their content as long as the VRTC is active.
Type RW

7 6 5 4 3 2 1 0
BCKUP

Bits Field Name Description Type Reset
7:0 BCKUP Backup bit RW 0x00

Table 6-28 BCK5_REG

Address Offset 0x1B
Physical Address Instance
Description Backup register which can be used for storage by the application firmware when the external host is powered down. These registers will retain their content as long as the VRTC is active.
Type RW

7 6 5 4 3 2 1 0
BCKUP

Bits Field Name Description Type Reset
7:0 BCKUP Backup bit RW 0x00

Table 6-29 PUADEN_REG

Address Offset 0x1C
Physical Address Instance
Description Pull-up/pull-down control register.
Type RW

7 6 5 4 3 2 1 0
RESERVED I2CCTLP I2CSRP PWRONP SLEEPP PWRHOLDP BOOT1P BOOT0P

Bits Field Name Description Type Reset
7 RESERVED Reserved bit RW 1
6 I2CCTLP SDACTL and SCLCTL pull-up control:
1: Pull-up is enabled
0: Pull-up is disabled
RW 0
5 I2CSRP SDASR and SCLSR pull-up control:
1: Pull-up is enabled
0: Pull-up is disabled
RW 0
4 PWRONP PWRON pad pull-up control:
1: Pull-up is enabled
0: Pull-up is disabled
RW 1
3 SLEEPP SLEEP pad pull-down control:
1: Pull-down is enabled
0: Pull-down is disabled
RW 1
2 PWRHOLDP PWRHOLD pad pull-down control:
1: Pull-down is enabled
0: Pull-down is disabled
RW 1
1 BOOT1P BOOT1 pad control:
1: Pull-down is enabled
0: Pull-down is disabled
RW 1
0 BOOT0P BOOT0 pad control:
1: Pull-down is enabled
0: Pull-down is disabled
RW 1

Table 6-30 REF_REG

Address Offset 0x1D
Physical Address Instance
Description Reference control register
Type RW

7 6 5 4 3 2 1 0
Reserved VMBCH_SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 VMBCH_SEL Main Battery comparator VMBCH programmable threshold (EEPROM bits):
VMBCH_SEL[1:0] = 00 : bypass
VMBCH_SEL[1:0] = 01 : VMBCH = 2.8 V
VMBCH_SEL[1:0] = 10 : VMBCH = 2.9 V
VMBCH_SEL[1:0] = 11 : VMBCH = 3.0 V
RW 0x0
1:0 ST Reference state:
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Reserved
ST[1:0] = 11 : On low power (SLEEP)
(Write access available in test mode only)
RO 0x1

Table 6-31 VRTC_REG

Address Offset 0x1E
Physical Address Instance
Description VRTC internal regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved VRTC_OFFMASK Reserved ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3 VRTC_OFFMASK VRTC internal regulator off mask signal:
when 1, the regulator keeps its full-load capability during device OFF state.
when 0, the regulator will enter in low-power mode during device OFF state.(EEPROM bit)
RW 0
2 Reserved Reserved bit RO
R returns 0s
0
1:0 ST Reference state:
ST[1:0] = 00 : Reserved
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Reserved
ST[1:0] = 11 : On low power (SLEEP)
(Write access available in test mode only)
RO 0x1

Table 6-32 VIO_REG

Address Offset 0x20
Physical Address Instance
Description VIO control register
Type RW

7 6 5 4 3 2 1 0
ILMAX Reserved SEL ST

Bits Field Name Description Type Reset
7:6 ILMAX Select maximum load current:
when 00: 0.5 A
when 01: 1.0 A
when 10: 1.0 A
when 11: 1.0 A
RW 0x0
5:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Output voltage selection (EEPROM bits):
SEL[1:0] = 00 : 1.5 V
SEL[1:0] = 01 : 1.8 V
SEL[1:0] = 10 : 2.5 V
SEL[1:0] = 11 : 3.3 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
(Write access available in test mode only)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-33 VDD1_REG

Address Offset 0x21
Physical Address Instance
Description VDD1 control register
Type RW

7 6 5 4 3 2 1 0
VGAIN_SEL ILMAX TSTEP ST

Bits Field Name Description Type Reset
7:6 VGAIN_SEL Select output voltage multiplication factor: G (EEPROM bits):
when 00: x1
when 01: x1
when 10: x2
when 11: x3
RW 0x0
5 ILMAX Select maximum load current:
when 0: 1.0 A
when 1: 1.5 A
RW 0
4:2 TSTEP Time step: when changing the output voltage, the new value is reached through successive 12.5 mV voltage steps (if not bypassed). The equivalent programmable slew rate of the output voltage is then:
TSTEP[2:0] = 000 : step duration is 0, step function is bypassed
TSTEP[2:0] = 001 : 12.5 mV/µs (sampling 3 MHz)
TSTEP[2:0] = 010 : 9.4 mV/µs (sampling 3 MHz × 3/4)
TSTEP[2:0] = 011 : 7.5 mV/µs (sampling 3 MHz × 3/5) (default)
TSTEP[2:0] = 100 : 6.25 mV/µs (sampling 3 MHz/2)
TSTEP[2:0] = 101 : 4.7 mV/µs (sampling 3 MHz/3)
TSTEP[2:0] = 110 : 3.12 mV/µs (sampling 3 MHz/4)
TSTEP[2:0] = 111 : 2.5 mV/µs (sampling 3 MHz/5)
RW 0x3
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On, high power mode
ST[1:0] = 10 : Off
ST[1:0] = 11 : On, low power mode
RW 0x0

Table 6-34 VDD1_OP_REG

Address Offset 0x22
Physical Address Instance
Description VDD1 voltage selection register.
This register can be accessed by both control and smartreflex I2C interfaces depending on SR_CTL_I2C_SEL register bit value.
Type RW

7 6 5 4 3 2 1 0
CMD SEL

Bits Field Name Description Type Reset
7 CMD Smart-Reflex command:
when 0: VDD1_OP_REG voltage is applied
when 1: VDD1_SR_REG voltage is applied
RW 0
6:0 SEL Output voltage (EEPROM bits) selection with GAIN_SEL = 00 (G = 1, 12.5 mV per LSB):
SEL[6:0] = 1001011 to 1111111 : 1.5 V
...
SEL[6:0] = 0111111 : 1.35 V
...
SEL[6:0] = 0110011 : 1.2 V
...
SEL[6:0] = 0000001 to 0000011 : 0.6 V
SEL[6:0] = 0000000 : Off (0.0 V)
Note: from SEL[6:0] = 3 to 75 (dec)
Vout = (SEL[6:0] × 12.5 mV + 0.5625 V) × G
RW See (1)
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-35 VDD1_SR_REG

Address Offset 0x23
Physical Address Instance
Description VDD1 voltage selection register for smartreflex.
This register can be accessed by both control and smartreflex I2C interfaces depending on SR_CTL_I2C_SEL register bit value.
Type RW

7 6 5 4 3 2 1 0
Reserved SEL

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:0 SEL Output voltage (EEPROM bits) selection with GAIN_SEL = 00 (G = 1, 12.5 mV per LSB):
SEL[6:0] = 1001011 to 1111111 : 1.5V
...
SEL[6:0] = 0111111 : 1.35V
...
SEL[6:0] = 0110011 : 1.2V
...
SEL[6:0] = 0000001 to 0000011 : 0.6V
SEL[6:0] = 0000000 : Off (0.0V)
Note: from SEL[6:0] = 3 to 75 (dec)
Vout = (SEL[6:0] × 12.5 mV + 0.5625 V) × G
RW See (1)
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-36 VDD2_REG

Address Offset 0x24
Physical Address Instance
Description VDD2 control register
Type RW

7 6 5 4 3 2 1 0
VGAIN_SEL ILMAX TSTEP ST

Bits Field Name Description Type Reset
7:6 VGAIN_SEL Select output voltage multiplication factor: G (EEPROM bits):
when 00: x1
when 01: x1
when 10: x2
when 11: x3
RW 0x0
5:4 ILMAX Select maximum load current:
when 0: 1.0 A
when 1: 1.5 A
RW 0
3:2 TSTEP Time step: when changing the output voltage, the new value is reached through successive 12.5 mV voltage steps (if not bypassed). The equivalent programmable slew rate of the output voltage is then:
TSTEP[2:0] = 000: step duration is 0, step function is bypassed
TSTEP[2:0] = 001: 12.5 mV/µs (sampling 3 MHz)
TSTEP[2:0] = 010: 9.4 mV/µs (sampling 3 MHz × 3/4)
TSTEP[2:0] = 011: 7.5 mV/µs (sampling 3 MHz × 3/5) (default)
TSTEP[2:0] = 100: 6.25 mV/µs(sampling 3 MHz/2)
TSTEP[2:0] = 101: 4.7 mV/µs(sampling 3 MHz/3)
TSTEP[2:0] = 110: 3.12 mV/µs(sampling 3 MHz/4)
TSTEP[2:0] = 111: 2.5 mV/µs(sampling 3 MHz/5)
RW 0x1
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On, high power mode
ST[1:0] = 10 : Off
ST[1:0] = 11 : On, low power mode
RW 0x0

Table 6-37 VDD2_OP_REG

Address Offset 0x25
Physical Address Instance
Description VDD2 voltage selection register.
This register can be accessed by both control and smartreflex I2C interfaces depending on SR_CTL_I2C_SEL register bit value.
Type RW

7 6 5 4 3 2 1 0
CMD SEL

Bits Field Name Description Type Reset
7 CMD Smart-Reflex command:
when 0: VDD2_OP_REG voltage is applied
when 1: VDD2_SR_REG voltage is applied
RW 0
6:0 SEL Output voltage (EEPROM bits) selection with GAIN_SEL = 00 (G = 1, 12.5 mV per LSB):
SEL[6:0] = 1001011 to 1111111 : 1.5 V
...
SEL[6:0] = 0111111 : 1.35 V
...
SEL[6:0] = 0110011 : 1.2 V
...
SEL[6:0] = 0000001 to 0000011 : 0.6 V
SEL[6:0] = 0000000 : Off (0.0 V)
Note: from SEL[6:0] = 3 to 75 (dec)
Vout= (SEL[6:0] × 12.5 mV + 0.5625 V) × G
RW See (1)
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-38 VDD2_SR_REG

Address Offset 0x26
Physical Address Instance
Description VDD2 voltage selection register for smartreflex.
This register can be accessed by both control and smartreflex I2C interfaces depending on SR_CTL_I2C_SEL register bit value.
Type RW

7 6 5 4 3 2 1 0
Reserved SEL

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6:0 SEL Output voltage (EEPROM bits) selection with GAIN_SEL = 00 (G = 1, 12.5 mV per LSB):
SEL[6:0] = 1001011 to 1111111: 1.5 V
...
SEL[6:0] = 0111111: 1.35V
...
SEL[6:0] = 0110011: 1.2V
...
SEL[6:0] = 0000001 to 0000011: 0.6V
SEL[6:0] = 0000000: Off (0.0V)
Note: from SEL[6:0] = 3 to 75 (dec)
Vout= (SEL[6:0] × 12.5 mV + 0.5625 V) ×G
RW See (1)
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-39 VDD3_REG

Address Offset 0x27
Physical Address Instance
Description VDD2 voltage selection register for smartreflex.
This register can be accessed by both control and smartreflex I2C interfaces depending on SR_CTL_I2C_SEL register bit value.
Type RW

7 6 5 4 3 2 1 0
Reserved CKINEN ST

Bits Field Name Description Type Reset
7:3 Reserved Reserved bit RO
R returns 0s
0x00
2 CKINEN Enable 1MHz clock synchronization RW 1
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0

Table 6-40 VDIG1_REG

Address Offset 0x30
Physical Address Instance
Description VDIG1 regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.2 V
SEL[1:0] = 01 : 1.5 V
SEL[1:0] = 10 : 1.8 V
SEL[1:0] = 11 : 2.7 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-41 VDIG2_REG

Address Offset 0x31
Physical Address Instance
Description VDIG2 regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.0 V
SEL[1:0] = 01 : 1.1 V
SEL[1:0] = 10 : 1.2 V
SEL[1:0] = 11 : 1.8 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-42 VAUX1_REG

Address Offset 0x32
Physical Address Instance
Description VAUX1 regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.8 V
SEL[1:0] = 01 : 2.5 V
SEL[1:0] = 10 : 2.8 V
SEL[1:0] = 11 : 2.85 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-43 VAUX2_REG

Address Offset 0x33
Physical Address Instance
Description VAUX2 regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.8 V
SEL[1:0] = 01 : 2.8 V
SEL[1:0] = 10 : 2.9 V
SEL[1:0] = 11 : 3.3 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-44 VAUX33_REG

Address Offset 0x34
Physical Address Instance
Description VAUX33 regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.8 V
SEL[1:0] = 01 : 2.0 V
SEL[1:0] = 10 : 2.8 V
SEL[1:0] = 11 : 3.3 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-45 VMMC_REG

Address Offset 0x35
Physical Address Instance
Description VMMC regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.8 V
SEL[1:0] = 01 : 2.8 V
SEL[1:0] = 10 : 3.0 V
SEL[1:0] = 11 : 3.3 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00: Off
ST[1:0] = 01: On high power (ACTIVE)
ST[1:0] = 10: Off
ST[1:0] = 11: On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-46 VPLL_REG

Address Offset 0x36
Physical Address Instance
Description VPLL regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.0 V
SEL[1:0] = 01 : 1.1 V
SEL[1:0] = 10 : 1.8 V
SEL[1:0] = 11 : 2.5 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-47 VDAC_REG

Address Offset 0x37
Physical Address Instance
Description VDAC regulator control register
Type RW

7 6 5 4 3 2 1 0
Reserved SEL ST

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:2 SEL Supply voltage (EEPROM bits):
SEL[1:0] = 00 : 1.8 V
SEL[1:0] = 01 : 2.6 V
SEL[1:0] = 10 : 2.8 V
SEL[1:0] = 11 : 2.85 V
RW See (1)
1:0 ST Supply state (EEPROM bits):
ST[1:0] = 00 : Off
ST[1:0] = 01 : On high power (ACTIVE)
ST[1:0] = 10 : Off
ST[1:0] = 11 : On low power (SLEEP)
RW 0x0
(1) The reset value for this field varies with boot mode selection and the processor support. Please refer to the corresponding processor user guide to find the correct default value.

Table 6-48 Therm_REG

Address Offset 0x38
Physical Address Instance
Description Thermal control register
Type RW

7 6 5 4 3 2 1 0
Reserved THERM_HD THERM_TS THERM_HDSEL RSVD1 THERM_STATE

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R returns 0s
0x0
5 THERM_HD Hot die detector output:
when 0: the hot die threshold is not reached
when 1: the hot die threshold is reached
RO 0
4 THERM_TS Thermal shutdown detector output:
when 0: the thermal shutdown threshold is not reached
when 1: the thermal shutdown threshold is reached
RO 0
3:2 THERM_HDSEL Temperature selection for Hot Die detector:
when 00: Low temperature threshold

when 11: High temperature threshold
RW 0x3
1 RSVD1 Reserved bit RW 0
0 THERM_STATE Thermal shutdown module enable signal:
when 0: thermal shutdown module is disable
when 1: thermal shutdown module is enable
RW 1

Table 6-49 BBCH_REG

Address Offset 0x39
Physical Address Instance
Description Back-up battery charger control register
Type RW

7 6 5 4 3 2 1 0
Reserved BBSEL BBCHEN

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x00
2:1 BBSEL Back up battery charge voltage selection:
BBSEL[1:0] = 00 : 3.0 V
BBSEL[1:0] = 01 : 2.52 V
BBSEL[1:0] = 10 : 3.15 V
BBSEL[1:0] = 11 : VBAT
RW 0x0
0 BBCHEN Back up battery charge enable RW 0

Table 6-50 DCDCCTRL_REG

Address Offset 0x3E
Physical Address Instance
Description DCDC control register
Type RW

7 6 5 4 3 2 1 0
Reserved VDD2_PSKIP VDD1_PSKIP VIO_PSKIP DCDCCKEXT DCDCCKSYNC

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R returns 0s
0x0
5 VDD2_PSKIP VDD2 pulse skip mode enable (EEPROM bit) RW 1
4 VDD1_PSKIP VDD1 pulse skip mode enable (EEPROM bit) RW 1
3 VIO_PSKIP VIO pulse skip mode enable (EEPROM bit) RW 1
2 DCDCCKEXT This signal control the muxing of the GPIO0 pad:
When 0: this pad is a GPIO
When 1: this pad is used as input for an external clock used for the synchronisation of the DCDCs
RW 0
1:0 DCDCCKSYNC DCDC clock configuration:
DCDCCKSYNC[1:0] = 00 : no synchronization of DCDC clocks
DCDCCKSYNC[1:0] = 01 : DCDC synchronous clock with phase shift
DCDCCKSYNC[1:0] = 10 : no synchronization of DCDC clocks
DCDCCKSYNC[1:0] = 11 : DCDC synchronous clock
RW 0x3

Table 6-51 DEVCTRL_REG

Address Offset 0x3F
Physical Address Instance
Description Device control register
Type RW

7 6 5 4 3 2 1 0
Reserved RTC_PWDN CK32K_CTRL SR_CTL_I2C_SEL DEV_OFF_RST DEV_ON DEV_SLP DEV_OFF

Bits Field Name Description Type Reset
7 Reserved Reserved bit RO
R returns 0s
0
6 RTC_PWDN When 1, disable the RTC digital domain (clock gating and reset of RTC registers and logic).
This register bit is not reset in BACKUP state (EEPROM bit)
RW 1
5 CK32K_CTRL Internal 32-kHz clock source control bit (EEPROM bit):
when 0, the internal 32-kHz clock source is the crystal oscillator or an external 32-kHz clock in case the crystal oscillator is used in bypass mode
when 1, the internal 32-kHz clock source is the RC oscillator.
RW 1
4 SR_CTL_I2C_SEL Smartreflex registers access control bit:
when 0: access to smartreflex registers by smartreflex I2C
when 1: access to smartreflex registers by control I2C The smartreflex registers are: VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG and VDD2_SR_REG.
RW 0
3 DEV_OFF_RST Write 1 will start an ACTIVE to OFF or SLEEP to OFF device state transition (switch-off event) and activate reset of the digital core. RW 0
2 DEV_ON Write 1 will maintain the device on (ACTIVE or SLEEP device state) (if DEV_OFF = 0 and DEV_OFF_RST = 0). RW 0
1 DEV_SLP Write 1 allows SLEEP device state (if DEV_OFF = 0 and DEV_OFF_RST = 0).
Write ‘0’ will start an SLEEP to ACTIVE device state transition (wake-up event) (if DEV_OFF = 0 and DEV_OFF_RST = 0). This bit is cleared in OFF state.
RW 0
0 DEV_OFF Write 1 will start an ACTIVE to OFF or SLEEP to OFF device state transition (switch-off event). This bit is cleared in OFF state. RW 0

Table 6-52 DEVCTRL2_REG

Address Offset 0x40
Physical Address Instance
Description Device control register
Type RW

7 6 5 4 3 2 1 0
Reserved TSLOT_LENGTH SLEEPSIG_POL PWRON_LP_OFF PWRON_LP_RST IT_POL

Bits Field Name Description Type Reset
7:6 Reserved Reserved bit RO
R returns 0s
0x0
5:4 TSLOT_LENGTH Time slot duration programming (EEPROM bit):
When 00 : 0 µs
When 01 : 200 µs
When 10 : 500 µs
When 11 : 2 ms
RW 0x3
3 SLEEPSIG_POL When 1, SLEEP signal active high
When 0, SLEEP signal active low
RW 0
2 PWRON_LP_OFF When 1, allows device turn-off after a PWRON long press (signal low). RW 1
1 PWRON_LP_RST When 1, allows digital core reset when the device is OFF after a PWRON long press (signal low). RW 0
0 IT_POL INT1 interrupt pad polarity control signal (EEPROM bit):
When 0, active low
When 1, active high
RW 0

Table 6-53 SLEEP_KEEP_LDO_ON_REG

Address Offset 0x41
Physical Address Instance
Description When corresponding control bit=0 in EN1/2_ LDO_ASS register (default setting): Configuration Register keeping the full load capability of LDO regulator (ACTIVE mode) during the SLEEP state of the device.
When control bit=1, LDO regulator full load capability (ACTIVE mode) is maintained during device SLEEP state.
When control bit=0, the LDO regulator is set or stay in low power mode during device SLEEP state(but then supply state can be overwritten programming ST[1:0]). Control bit value has no effect if the LDO regulator is off.
When corresponding control bit=1 in EN1/2_ LDO_ASS register: Configuration Register setting the LDO regulator state driven by SCLSR_EN1/2 signal low level (when SCLSR_EN1/2 is high the regulator is on, full power):
- The regulator is set off if its corresponding Control bit = 0 in SLEEP_KEEP_LDO_ON register (default)
- The regulator is set in low power mode if its corresponding control bit = 1 in SLEEP_KEEP_LDO_ON register
Type RW

7 6 5 4 3 2 1 0
VDAC_KEEPON VPLL_KEEPON VAUX33_KEEPON VAUX2_KEEPON VAUX1_KEEPON VDIG2_KEEPON VDIG1_KEEPON VMMC_KEEPON

Bits Field Name Description Type Reset
7 VDAC_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
6 VPLL_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
5 VAUX33_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
4 VAUX2_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
3 VAUX1_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
2 VDIG2_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
1 VDIG1_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0
0 VMMC_KEEPON Setting supply state during device SLEEP state or when SCLSR_EN1/2 is low RW 0

Table 6-54 SLEEP_KEEP_RES_ON_REG

Address Offset 0x42
Physical Address Instance
Description Configuration Register keeping, during the SLEEP state of the device (but then supply state can be overwritten programming ST[1:0]):
- The full load capability of LDO regulator (ACTIVE mode),
- The PWM mode of DCDC converter
- 32KHz clock output
- Register access though I2C interface (keeping the internal high speed clock on)
- Die Thermal monitoring on
Control bit value has no effect if the resource is off.
Type RW

7 6 5 4 3 2 1 0
THERM_KEEPON CLKOUT32K_KEEPON VRTC_KEEPON I2CHS_KEEPON VDD3_KEEPON VDD2_KEEPON VDD1_KEEPON VIO_KEEPON

Bits Field Name Description Type Reset
7 THERM_KEEPON When 1, thermal monitoring is maintained during device SLEEP state.
When 0, thermal monitoring is turned off during device SLEEP state.
RW 0
6 CLKOUT32K_KEEPON When 1, CLK32KOUT output is maintained during device SLEEP state.
When 0, CLK32KOUT output is set low during device SLEEP state.
RW 0
5 VRTC_KEEPON When 1, LDO regulator full load capability (ACTIVE mode) is maintained during device SLEEP state.
When 0, the LDO regulator is set or stays in low power mode during device SLEEP state.
RW 0
4 I2CHS_KEEPON When 1, high speed internal clock is maintained during device SLEEP state.
When 0, high speed internal clock is turned off during device SLEEP state.
RW 0
3 VDD3_KEEPON When 1, VDD3 SMPS high power mode is maintained during device SLEEP state. No effect if VDD3 working mode is low power.
When 0, VDD3 SMPS low power mode is set during device SLEEP state.
RW 0
2 VDD2_KEEPON If VDD2_EN1&2 control bit = 0 (default setting):
When 1, VDD2 SMPS PWM mode is maintained during device SLEEP state. No effect if VDD2 working mode is PFM.
When 0, VDD2 SMPS PFM mode is set during device SLEEP state.
RW 0
1 VDD1_KEEPON If VDD1_EN1&2 control bit=0 (default setting):
When 1, VDD1 SMPS PWM mode is maintained during device SLEEP state. No effect if VDD1 working mode is PFM.
When 0, VDD1 SMPS PFM mode is set during device SLEEP state.
RW 0
0 VIO_KEEPON If VIO_EN1&2 control bit=0 (default setting): When 1, VIO SMPS PWM mode is maintained during device SLEEP state. No effect if VIO working mode is PFM.
When 0, VIO SMPS PFM mode is set during device SLEEP state.
RW 0

Table 6-55 SLEEP_SET_LDO_OFF_REG

Address Offset 0x43
Physical Address Instance
Description Configuration Register turning-off LDO regulator during the SLEEP state of the device.
Corresponding *_KEEP_ON control bit in SLEEP_KEEP_RES_ON register should be 0 to make this *_SET_OFF control bit effective
Type RW

7 6 5 4 3 2 1 0
VDAC_SETOFF VPLL_SETOFF VAUX33_SETOFF VAUX2_SETOFF VAUX1_SETOFF VDIG2_SETOFF VDIG1_SETOFF VMMC_SETOFF

Bits Field Name Description Type Reset
7 VDAC_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
6 VPLL_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
5 VAUX33_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
4 IVAUX2_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
3 VAUX1_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
2 VDIG2_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
1 VDIG1_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0
0 VMMC_SETOFF When 1, LDO regulator is turned off during device SLEEP state.
When 0, No effect
RW 0

Table 6-56 SLEEP_SET_RES_OFF_REG

Address Offset 0x44
Physical Address Instance
Description Configuration Register turning-off SMPS regulator during the SLEEP state of the device.
Corresponding *_KEEP_ON control bit in SLEEP_KEEP_RES_ON2 register should be 0 to make this *_SET_OFF control bit effective. Supplies voltage expected after their wake-up (SLEEP to ACTIVE state transition) can also be programmed.
Type RW

7 6 5 4 3 2 1 0
DEFAULT_VOLT RSVD SPARE_SETOFF VDD3_SETOFF VDD2_SETOFF VDD1_SETOFF VIO_SETOFF

Bits Field Name Description Type Reset
7 DEFAULT_VOLT When 1, default voltages (registers value after switch-on) will be used to turned-on supplies during SLEEP to ACTIVE state transition.
When 0, voltages programmed before the ACTIVE to SLEEP state transition will be used to turned-on supplies during SLEEP to ACTIVE state transition.
RW 0
6:5 RSVD Reserved bit RO
R returns 0s
0x0
4 SPARE_SETOFF Spare bit RW 0
3 VDD3_SETOFF When 1, SMPS is turned off during device SLEEP state.
When 0, No effect.
RW 0
2 VDD2_SETOFF When 1, SMPS is turned off during device SLEEP state.
When 0, No effect.
RW 0
1 VDD1_SETOFF When 1, SMPS is turned off during device SLEEP state.
When 0, No effect.
RW 0
0 VIO_SETOFF When 1, SMPS is turned off during device SLEEP state.
When 0, No effect.
RW 0

Table 6-57 EN1_LDO_ASS_REG

Address Offset 0x45
Physical Address Instance
Description Configuration Register setting the LDO regulators, driven by the multiplexed SCLSR_EN1 signal.
When control bit = 1, LDO regulator state is driven by the SCLSR_EN1 control signal and is also defined though SLEEP_KEEP_LDO_ON register setting:
When SCLSR_EN1 is high the regulator is on,
When SCLSR_EN1 is low:
- The regulator is off if its corresponding Control bit = 0 in SLEEP_KEEP_LDO_ON register
- The regulator is working in low power mode if its corresponding control bit = 1 in
SLEEP_KEEP_LDO_ON register
When control bit = 0 no effect : LDO regulator state is driven though registers programming and the device state
Any control bit of this register set to 1 will disable the I2C SR Interface functionality
Type RW

7 6 5 4 3 2 1 0
VDAC_EN1 VPLL_EN1 VAUX33_EN1 VAUX2_EN1 VAUX1_EN1 VDIG2_EN1 VDIG1_EN1 VMMC_EN1

Bits Field Name Description Type Reset
7 VDAC_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
6 VPLL_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
5 VAUX33_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
4 VAUX2_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
3 VAUX1_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
2 VDIG2_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
1 VDIG1_EN1 Setting supply state control though SCLSR_EN1 signal RW 0
0 VMMC_EN1 Setting supply state control though SCLSR_EN1 signal RW 0

Table 6-58 EN1_SMPS_ASS_REG

Address Offset 0x46
Physical Address Instance
Description Configuration Register setting the SMPS Supplies driven by the multiplexed SCLSR_EN1 signal.
When control bit = 1, SMPS Supply state and voltage is driven by the SCLSR_EN1 control signal and is also defined though SLEEP_KEEP_RES_ON register setting.
When control bit = 0 no effect : SMPS Supply state is driven though registers programming and the device state.
Any control bit of this register set to 1 will disable the I2C SR Interface functionality
Type RW

7 6 5 4 3 2 1 0
RSVD SPARE_EN1 VDD3_EN1 VDD2_EN1 VDD1_EN1 VIO_EN1

Bits Field Name Description Type Reset
7:5 RSVD Reserved bit RW 0
4 SPARE_EN1 Spare bit Rw 0
3 VDD3_EN1 When 1:
When SCLSR_EN1 is high the supply is on.
When SCLSR_EN1 is low and SLEEP_KEEP_RES_ON = '0' the supply voltage is off.
When SCLSR_EN1 is low and SLEEP_KEEP_RES_ON = '1' the SMPS is working in low power mode.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
2 VDD2_EN1 When control bit = 1:
When SCLSR_EN1 is high the supply voltage is programmed though VDD2_OP_REG register, and it can also be programmed off.
When SCLSR_EN1 is low the supply voltage is programmed though VDD2_SR_REG register, and it can also be programmed off.
When SCLSR_EN1 is low and VDD2_KEEPON = 1 the SMPS is working in low power mode, if not tuned off through VDD2_SR_REG register.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
1 VDD1_EN1 When 1:
When SCLSR_EN1 is high the supply voltage is programmed though VDD1_OP_REG register, and it can also be programmed off.
When SCLSR_EN1 is low the supply voltage is programmed though VDD1_SR_REG register, and it can also be programmed off.
When SCLSR_EN1 is low and VDD1_KEEPON = 1 the SMPS is working in low power mode, if not tuned off though VDD1_SR_REG register.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
0 VIO_EN1 When control bit = 1, supply state is driven by the SCLSR_EN1 control signal and is also defined though SLEEP_KEEP_RES_ON register setting:
When SCLSR_EN1 is high the supply is on,
When SCLSR_EN1 is low:
- the supply is off (default) or the SMPS is working in low power mode if VIO_KEEPON = 1
When control bit = 0 no effect: SMPS state is driven though registers programming and the device state
RW 0

Table 6-59 EN2_LDO_ASS_REG

Address Offset 0x47
Physical Address Instance
Description Configuration Register setting the LDO regulators, driven by the multiplexed SDASR_EN2 signal.
When control bit = 1, LDO regulator state is driven by the SDASR_EN2 control signal and is also defined though SLEEP_KEEP_LDO_ON register setting:
When SDASR_EN2 is high the regulator is on,
When SCLSR_EN2 is low:
- The regulator is off if its corresponding Control bit = 0 in SLEEP_KEEP_LDO_ON register
- The regulator is working in low power mode if its corresponding control bit = 1 in SLEEP_KEEP_LDO_ON register
When control bit = 0 no effect: LDO regulator state is driven though registers programming and the device state
Any control bit of this register set to 1 will disable the I2C SR Interface functionality
Type RW

7 6 5 4 3 2 1 0
VDAC_EN2 VPLL_EN2 VAUX33_EN2 VAUX2_EN2 VAUX1_EN2 VDIG2_EN2 VDIG1_EN2 VMMC_EN2

Bits Field Name Description Type Reset
7 VDAC_EN2 Setting supply state control though SDASR_EN2 signal RW 0
6 VPLL_EN2 Setting supply state control though SDASR_EN2 signal RW 0
5 VAUX33_EN2 Setting supply state control though SDASR_EN2 signal RW 0
4 VAUX2_EN2 Setting supply state control though SDASR_EN2 signal RW 0
3 VAUX1_EN2 Setting supply state control though SDASR_EN2 signal RW 0
2 VDIG2_EN2 Setting supply state control though SDASR_EN2 signal RW 0
1 VDIG1_EN2 Setting supply state control though SDASR_EN2 signal RW 0
0 VMMC_EN2 Setting supply state control though SDASR_EN2 signal RW 0

Table 6-60 EN2_SMPS_ASS_REG

Address Offset 0x48
Physical Address Instance
Description Configuration Register setting the SMPS Supplies driven by the multiplexed SDASR_EN2 signal.
When control bit = 1, SMPS Supply state and voltage is driven by the SDASR_EN2 control signal and is also defined though SLEEP_KEEP_RES_ON register setting.
When control bit = 0 no effect: SMPS Supply state is driven though registers programming and the device state
Any control bit of this register set to 1 will disable the I2C SR Interface functionality
Type RW

7 6 5 4 3 2 1 0
RSVD SPARE_EN2 VDD3_EN2 VDD2_EN2 VDD1_EN2 VIO_EN2

Bits Field Name Description Type Reset
7:5 RSVD Reserved bit RO
R returns 0s
0x0
4 SPARE_EN2 Spare bit RW 0
3 VDD3_EN2 When 1:
When SDASR_EN2 is high the supply is on.
When SDASR_EN2 is low and SLEEP_KEEP_RES_ON = 0 the supply voltage is off.
When SDASR_EN2 is low and SLEEP_KEEP_RES_ON = 1 the SMPS is working in low power mode.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
2 VDD2_EN2 When control bit = 1:
When SDASR_EN2 is high the supply voltage is programmed though VDD2_OP_REG register, and it can also be programmed off.
When SDASR_EN2 is low the supply voltage is programmed though VDD2_SR_REG register, and it can also be programmed off.
When SDASR_EN2 is low and and VDD2_KEEPON = 1 the SMPS is working in low power mode, if not tuned off though VDD2_SR_REG register.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
1 VDD1_EN2 When control bit = 1:
When SDASR_EN2 is high the supply voltage is programmed though VDD1_OP_REG register, and it can also be programmed off.
When SDASR_EN2 is low the supply voltage is programmed though VDD1_SR_REG register, and it can also be programmed off.
When SDASR_EN2 is low and and VDD1_KEEPON = 1 the SMPS is working in low power mode, if not tuned off though VDD1_SR_REG register.
When control bit = 0 no effect: supply state is driven though registers programming and the device state
RW 0
0 VIO_EN2 When control bit = 1,
supply state is driven by the SCLSR_EN2 control signal and is also defined though SLEEP_KEEP_RES_ON register setting:
When SDASR _EN2 is high the supply is on,
When SDASR _EN2 is low :
- The supply is off (default) or the SMPS is working in low power mode if VIO_KEEPON = 1
When control bit = 0 no effect: SMPS state is driven though registers programming and the device state
RW 0

Table 6-61 RESERVED

Address Offset 0x49
Physical Address Instance
Description Reserved register
Type RW

7 6 5 4 3 2 1 0
RESERVED

Bits Field Name Description Type Reset
7:0 RESERVED Reserved bit RW 0

Table 6-62 RESERVED

Address Offset 0x4A
Physical Address Instance
Description Reserved register
Type RW

7 6 5 4 3 2 1 0
RESERVED

Bits Field Name Description Type Reset
7:0 RESERVED Reserved bit RW 0x00

Table 6-63 INT_STS_REG

Address Offset 0x50
Physical Address Instance
Description Interrupt status register:
The interrupt status bit is set to 1 when the associated interrupt event is detected. Interrupt status bit is cleared by writing 1.
Type RW

7 6 5 4 3 2 1 0
RTC_PERIOD_IT RTC_ALARM_IT HOTDIE_IT PWRHOLD_IT PWRON_LP_IT PWRON_IT VMBHI_IT VMBDCH_IT

Bits Field Name Description Type Reset
7 RTC_PERIOD_IT RTC period event interrupt status. RW
W1 to Clr
0
6 RTC_ALARM_IT RTC alarm event interrupt status. RW
W1 to Clr
0
5 HOTDIE_IT Hot die event interrupt status. RW
W1 to Clr
0
4 PWRHOLD_IT PWRHOLD event interrupt status. RW
W1 to Clr
0
3 PWRON_LP_IT PWRON Long Press event interrupt status. RW
W1 to Clr
0
2 PWRON_IT PWRON event interrupt status. RW
W1 to Clr
0
1 VMBHI_IT VBAT > VMBHI event interrupt status RW
W1 to Clr
0
0 VMBDCH_IT VBAT > VMBDCH event interrupt status.
Active only if Main Battery comparator VMBCH programmable threshold is not bypassed (VMBCH_SEL[1:0] ≠ 00)
RW
W1 to Clr
0

Table 6-64 INT_MSK_REG

Address Offset 0x51
Physical Address Instance
Description Interrupt mask register:
When *_IT_MSK is set to 1, the associated interrupt is masked: INT1 signal is not activated, but *_IT interrupt status bit is updated.
When *_IT_MSK is set to 0, the associated interrupt is enabled: INT1 signal is activated, *_IT is updated.
Type RW

7 6 5 4 3 2 1 0
RTC_PERIOD_IT_MSK RTC_ALARM_IT_MSK HOTDIE_IT_MSK PWRHOLD_IT_MSK PWRON_LP_IT_MSK PWRON_IT_MSK VMBHI_IT_MSK VMBDCH_IT_MSK

Bits Field Name Description Type Reset
7 RTC_PERIOD_IT_MSK RTC period event interrupt mask. RW 0
6 RTC_ALARM_IT_MSK RTC alarm event interrupt mask. RW 0
5 HOTDIE_IT_MSK Hot die event interrupt mask. RW 0
4 PWRHOLD_IT_MSK PWRHOLD rising edge event interrupt mask. RW 0
3 PWRON_LP_IT_MSK PWRON Long Press event interrupt mask. RW 0
2 PWRON_IT_MSK PWRON event interrupt mask. RW 0
1 VMBHI_IT_MSK VBAT > VMBHI event interrupt mask.
When 0, enable the device automatic switch on at BACKUP to OFF or NOSUPPLY to OFF device state transition (EEPROM bit)
RW 1
0 VMBDCH_IT_MSK VBAT < VMBDCH event interrupt status.
Active only if the main battery comparator VMBCH programmable threshold is not bypassed (VMBCH_SEL[1:0] ≠ 00).
RW 0

Table 6-65 INT_STS2_REG

Address Offset 0x52
Physical Address Instance
Description Interrupt status register:
The interrupt status bit is set to 1 when the associated interrupt event is detected. Interrupt status bit is cleared by writing 1.
Type RW

7 6 5 4 3 2 1 0
Reserved GPIO0_F_IT GPIO0_R_IT

Bits Field Name Description Type Reset
7:2 Reserved Reserved bit RW
W1 to Clr
0
1 GPIO0_F_IT GPIO_CKSYNC falling edge detection interrupt status RW
W1 to Clr
0
0 GPIO0_R_IT GPIO_CKSYNC rising edge detection interrupt status RW
W1 to Clr
0

Table 6-66 INT_MSK2_REG

Address Offset 0x53
Physical Address Instance
Description Interrupt mask register:
When *_IT_MSK is set to 1, the associated interrupt is masked: INT1 signal is not activated, but *_IT interrupt status bit is updated.
When *_IT_MSK is set to 0, the associated interrupt is enabled: INT1 signal is activated, *_IT is updated.
Type RW

7 6 5 4 3 2 1 0
Reserved GPIO0_F_IT_MSK GPIO0_R_IT_MSK

Bits Field Name Description Type Reset
7:2 Reserved Reserved bit RW 0
1 GPIO0_F_IT_MSK GPIO_CKSYNC falling edge detection interrupt mask. RW 0
0 GPIO0_R_IT_MSK GPIO_CKSYNC rising edge detection interrupt mask. RW 0

Table 6-67 GPIO0_REG

Address Offset 0x60
Physical Address Instance
Description GPIO0 configuration register
Type RW

7 6 5 4 3 2 1 0
Reserved GPIO_DEB GPIO_PUEN GPIO_CFG GPIO_STS GPIO_SET

Bits Field Name Description Type Reset
7:5 Reserved Reserved bit RO
R returns 0s
0x0
4 GPIO_DEB GPIO_CKSYNC input debouncing time configuration:
When 0, the debouncing is 91.5 µs using a 30.5 µs clock rate
When 1, the debouncing is 150 ms using a 50 ms clock rate
RW 0
3 GPIO_PUEN GPIO_CKSYNC pad pull-up control:
1: Pull-up is enabled
0: Pull-up is disabled
RW 1
2 GPIO_CFG Configuration of the GPIO_CKSYNC pad direction:
When 0, the pad is configured as an input
When 1, the pad is configured as an output
RW 0
1 GPIO_STS Status of the GPIO_CKSYNC pad RO 1
0 GPIO_SET Value set on the GPIO output when configured in output mode RW 0

Table 6-68 JTAGVERNUM_REG

Address Offset 0x80
Physical Address Instance
Description Silicon version number
Type RO

7 6 5 4 3 2 1 0
Reserved VERNUM

Bits Field Name Description Type Reset
7:4 Reserved Reserved bit RO
R returns 0s
0x0
3:0 VERNUM Value depending on silicon version number 0000 - Revision 1.0 RO 0x0