SPRUIY9B May   2021  – October 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Key Features
  5. 2EVM Revisions and Assembly Variants
  6. 3Important Usage Notes
  7. 4System Description
    1. 4.1 Key Features
    2. 4.2 Functional Block Diagram
    3. 4.3 Power-On/Off Procedures
      1. 4.3.1 Power-On Procedure
      2. 4.3.2 Power-Off Procedure
    4. 4.4 Peripheral and Major Component Description
      1. 4.4.1  Clocking
        1. 4.4.1.1 Ethernet PHY Clock
        2. 4.4.1.2 AM64x SoC Clock
      2. 4.4.2  Reset
      3. 4.4.3  Power
        1. 4.4.3.1 Power Input
        2. 4.4.3.2 USB Type-C Interface for Power Input
        3. 4.4.3.3 Power Fault Indication
        4. 4.4.3.4 Power Supply
        5. 4.4.3.5 Power Sequencing
        6. 4.4.3.6 Power Supply
      4. 4.4.4  Configuration
        1. 4.4.4.1 Boot Modes
      5. 4.4.5  JTAG
      6. 4.4.6  Test Automation
      7. 4.4.7  UART Interface
      8. 4.4.8  Memory Interfaces
        1. 4.4.8.1 LPDDR4 Interface
        2. 4.4.8.2 MMC Interface
          1. 4.4.8.2.1 Micro SD Interface
          2. 4.4.8.2.2 WiLink Interface
          3. 4.4.8.2.3 OSPI Interface
          4. 4.4.8.2.4 Board ID EEPROM Interface
      9. 4.4.9  Ethernet Interface
        1. 4.4.9.1 DP83867 PHY Default Configuration
        2. 4.4.9.2 DP83867 – Power, Clock, Reset, Interrupt and LEDs
        3. 4.4.9.3 Industrial Application LEDs
      10. 4.4.10 USB 3.0 Interface
      11. 4.4.11 PRU Connector
      12. 4.4.12 User Expansion Connector
      13. 4.4.13 MCU Connector
      14. 4.4.14 Interrupt
      15. 4.4.15 I2C Interface
      16. 4.4.16 IO Expander (GPIOs)
  8. 5Known Issues
    1. 5.1 Issue 1: LP8733x Max output Capacitance Spec Exceeded on LDO0 and LDO1
    2. 5.2 Issue 2: LP8733x Output Voltage of 0.9V Exceeds AM64x VDDR_CORE max Voltage Spec of 0.895 V
    3. 5.3 Issue 3 - SDIO Devices on MMC0 Require Careful Trace Lengths to Meet Interface Timing Requirements
    4. 5.4 Issue 4 - LPDDR4 Data Rate Limitation in Stressful Conditions
    5. 5.5 Issue 5 - Junk Character
    6. 5.6 Issue 6 - Test Power Down Signal Floating
    7. 5.7 Issue 7 - uSD Boot Not Working
  9. 6Regulatory Compliance
  10. 7Revision History

4.4.13 MCU Connector

A safety signal connector is 14x2 standard 0.1” spaced header. MCU connector only includes signals connected to the MCU. 18 Signals include MCU_I2C0, MCI_I2C1, MCU_UART1 (with flow control), MCU_SPI0 and MCU_SPI1 signals. Additional control signals provided on the connector include CONN_MCU_RESETz, CONN_MCU_PORz, MCU_RESETSTATz, MCU_SAFETY_ERRORn, 3.3V IO to MCU and GND. The MCU connector does not include the Board ID memory interface. Allowed current limit is 100 mA on 3.3V rail.

Table 4-22 28 Pin MCU Connector
Pin Net Name Pin Net Name
1 VCC_3V3_SYS 2 DGND
3 MCU_SPI0_CS1 4 MCU_SPI0_D1
5 MCU_GPIO0_8 6 MCU_SPI0_D0
7 DGND 8 MCU_SPI0_CS0
9 TEST_LED2 10 MCU_GPIO0_6
11 MCU_GPIO0_7 12 MCU_UART1_CTS_3V3
13 MCU_UART1_RX_3V3 14 MCU_GPIO0_9
15 DGND 16 MCU_I2C1_SDA
17 MCU_UART1_RTS_3V3 18 MCU_SPI0_CLK
19 MCU_UART1_TX_3V3 20 DGND
21 MCU_I2C0_SDA 22 MCU_I2C1_SCL
23 MCU_RESETSTATz 24 MCU_I2C0_SCL
25 CONN_MCU_RESETz 26 MCU_SAFETY_ERRORz_3V3
27 DGND 28 CONN_MCU_PORz
GUID-08D24FFB-7709-41AB-8F42-C6CF2843C059-low.png Figure 4-26 28-Pin MCU Connector