SPRUJ64 September   2022

 

  1.   Abstract
  2.   Trademarks
  3. 1Key Features
  4. 2AM64x SKEVM Overview
    1. 2.1 Board Version Identification
  5. 3Functional Block Diagram
  6. 4System Description
    1. 4.1  Clocking
      1. 4.1.1 Ethernet PHY Clock
      2. 4.1.2 AM64x SoC Clock
    2. 4.2  Reset
    3. 4.3  Power Requirements
      1. 4.3.1 Power Input
      2. 4.3.2 USB Type-C Interface for Power Input
      3. 4.3.3 Power Fault Indication
      4. 4.3.4 Power Supply
      5. 4.3.5 Power Sequencing
      6. 4.3.6 SOC Power
    4. 4.4  Configuration
      1. 4.4.1 Boot Modes
    5. 4.5  JTAG
    6. 4.6  Test Automation
    7. 4.7  UART Interface
    8. 4.8  Memory Interfaces
      1. 4.8.1 LPDDR4 Interface
      2. 4.8.2 MMC Interface
        1. 4.8.2.1 Micro SD Interface
        2. 4.8.2.2 WiLink Interface
        3. 4.8.2.3 OSPI Interface
        4. 4.8.2.4 Board ID EEPROM Interface
    9. 4.9  Ethernet Interface
      1. 4.9.1 DP83867 PHY Default Configuration
      2. 4.9.2 DP83867 – Power, Clock, Reset, Interrupt, and LEDs
      3. 4.9.3 Industrial Application LEDs for Indication
    10. 4.10 USB 3.0 Interface
    11. 4.11 PRU Connector
    12. 4.12 User Expansion Connector
    13. 4.13 MCU Connector
    14. 4.14 Interrupt
    15. 4.15 I2C Interface
    16. 4.16 IO Expander (GPIOs)
  7. 5Known Issues and Modifications
    1. 5.1 Issue 1 - Silkscreen Missprint on Initial Board Batch
  8. 6Revision History

4.13 MCU Connector

A safety signal connector is a 14x2 standard 0.1” spaced header. The 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 3.3-V rail.

Table 4-22 MCU Connector (28 Pin)
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-9232B592-B3BA-4CAF-BE8B-9AC82AFF2058-low.png Figure 4-20 28-Pin MCU Connector