SPRUJ40C may   2022  – may 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1EVM Revisions and Assembly Variants
  5. 2System Description
    1. 2.1 Key Features
      1. 2.1.1 Thermal Compliance
      2. 2.1.2 Processor
      3. 2.1.3 Power Supply
      4. 2.1.4 Memory
      5. 2.1.5 JTAG/Emulator
      6. 2.1.6 Supported Interfaces and Peripherals
      7. 2.1.7 Expansion Connectors/Headers to Support Application Specific Add‐On Boards
    2. 2.2 Functional Block Diagram (SK-AM62 and SK-AM62B)
    3. 2.3 Functional Block Diagram (SK-AM62-P1 and SK-AM62B-P1)
    4. 2.4 AM62x SKEVM Interface Mapping
    5. 2.5 Power ON/OFF Procedures
      1. 2.5.1 Power-On Procedure
      2. 2.5.2 Power-Off Procedure
      3. 2.5.3 Power Test Points
    6. 2.6 Peripheral and Major Component Description
      1. 2.6.1  Clocking
        1. 2.6.1.1 Peripheral Ref Clock
      2. 2.6.2  Reset
      3. 2.6.3  OLDI Display Interface
      4. 2.6.4  CSI Interface
      5. 2.6.5  Audio Codec Interface
      6. 2.6.6  HDMI Display Interface
      7. 2.6.7  JTAG Interface
      8. 2.6.8  Test Automation Header
      9. 2.6.9  UART Interface
      10. 2.6.10 USB Interface
        1. 2.6.10.1 USB 2.0 Type A Interface
        2. 2.6.10.2 USB 2.0 Type C Interface
      11. 2.6.11 Memory Interfaces
        1. 2.6.11.1 DDR4 Interface
        2. 2.6.11.2 OSPI Interface
        3. 2.6.11.3 MMC Interfaces
          1. 2.6.11.3.1 MMC0 - eMMC Interface
          2. 2.6.11.3.2 MMC1 - Micro SD Interface
          3. 2.6.11.3.3 MMC2 - Wilink Interface
        4. 2.6.11.4 EEPROM
      12. 2.6.12 Ethernet Interface
        1. 2.6.12.1 CPSW Ethernet PHY 2 Default Configuration
        2. 2.6.12.2 CPSW Ethernet PHY 1 Default Configuration
      13. 2.6.13 GPIO Port Expander
      14. 2.6.14 GPIO Mapping
      15. 2.6.15 Power
        1. 2.6.15.1 Power Requirements
        2. 2.6.15.2 Power Input
        3. 2.6.15.3 Power Supply
        4. 2.6.15.4 Power Sequencing
        5. 2.6.15.5 AM62x SoC Power
        6. 2.6.15.6 Current Monitoring
      16. 2.6.16 AM62x SKEVM User Setup/Configuration
        1. 2.6.16.1 EVM DIP Switches
        2. 2.6.16.2 Boot Modes
        3. 2.6.16.3 User Test LEDs
      17. 2.6.17 Expansion Headers
        1. 2.6.17.1 PRU Connector
        2. 2.6.17.2 User Expansion Connector
        3. 2.6.17.3 MCU Connector
      18. 2.6.18 Interrupt
      19. 2.6.19 I2C Address Mapping
  6. 3Known Issues and Modifications
    1. 3.1  Issue 1 - HDMI/DSS Incorrect Colors on E1
    2. 3.2  Issue 2 - J9 and J10 Header Alignment on E1
    3. 3.3  Issue 3 - USB Boot descoped on E1
    4. 3.4  Issue 4 - OLDI Connector Orientation and Pinout
    5. 3.5  Issue 5 - Bluetooth descoped on E2 EVMs
    6. 3.6  Issue 6 - Ethernet PHY CLK Skew Default Strapping Changes
    7. 3.7  Issue 7 - TEST_POWERDOWN changes
    8. 3.8  Issue 8 - MMC1_SDCD spurious interrupts
    9. 3.9  Issue 9 - PD Controller I2C2 IRQ Not Pinned Out
    10. 3.10 Issue 10 - INA Current Monitor Adress Changes
    11. 3.11 Issue 11 - Test Automation I2C Buffer Changes
  7.   Regulatory Compliance
  8.   Revision History

2.6.15.1 Power Requirements

AM62x SKEVM can be powered through either of the two USB Type C Connectors –

  • Connector 1(J11) - Power role – SINK, No Data role
  • Connector 2(J13) - Power role – DRP, Data role – USB2.0 DFP or UFP

The AM62x SK EVM supports voltage input ranges of 5 V - 15 V and 3A of current. A USB PD controller Mfr. Part# TPS65988DHRSHR is used for PD negotiation upon cable detection to get necessary power required for the board. Connector 1 is configured to be an UFP Port and has no Data role. Connector 2 is configured as a DRP port, it can act as DFP only when the board is being powered by Connector 1. When both the connectors are connected to external power supply, the port with highest PD power contract will be selected to power the board.

Table 2-12 Type-C port Power roles
J11(UFP) J13(DRP) Board Power Remarks
Plugged in NC ON - J11 J11 will be UFP and will only sink power and J13 can act as DFP if a peripheral is connected
NC Plugged in ON - J13 J13 will be UFP and can only sink power
Plugged in Plugged in ON - J11 or J13 Board will be powered by the port with highest PD power contract

The PD IC uses a SPI EEPROM to load the necessary configuration on power up so it can negotiate a power contract with a compatible power source.

The configuration file is loaded to the EEPROM using header J22. Once the EEPROM is programmed the PD obtains the configuration files via SPI communication. Upon loading the configuration files the PD negotiates with the source to obtain the necessary power requirement.

Note: The EEPROM is pre-programmed with the configuration file for the operation of the PD controller.

Power indication LEDs are provided for both the Type-C connectors for the user to identify which connector is powering the SKEVM Board.

An external power supply (Type-C output) can be used to power the EVM but is not included as part of the SKEVM kit.

The external power supply requirements (Type-C) are:

Minimum Voltage: 5 VDC, Recommended Minimum Current: 3000 mA

Maximum Voltage: 15VDC, Maximum current: 5000 mA

Table 2-13 Recommended External Power Supply
DigiKey Part No. Manufacturer Manufacturer Part No.
1939-1794-ND GlobTek, Inc. TR9CZ3000USBCG2R6BF2
Q1251-ND Qualtek QADC-65-20-08CB
Note: Because SK-AM62 implements USB PD for power, the device is able to negotiate to the highest Voltage/Current combination supported by both the Device and Power Adapter, as such, if the power supply exceeds the maximum voltage and current requirements listed above is acceptable as long as the power adapter is compliant with the USB-C PD specification.