SPRUJ09D March   2022  – September 2023 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1 , AM263P2-Q1 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Preface: Read This First
    1. 2.1 Sitara MCU+ Academy
    2. 2.2 If You Need Assistance
    3. 2.3 Important Usage Notes
  5. 2Control Card Overview
    1. 3.1 Kit Contents
    2. 3.2 Key Features
    3. 3.3 Component Identification
    4. 3.4 HSEC 180-pin Control Card Docking Station
    5. 3.5 Compliance
  6. 3Board Setup
    1. 4.1 Power Requirements
      1. 4.1.1 Power Input Using USB Type-C Connector
      2. 4.1.2 Power Status LEDs
      3. 4.1.3 Power Tree
      4. 4.1.4 Power Sequence
    2. 4.2 Push Buttons
    3. 4.3 Boot Mode Selection
    4. 4.4 JTAG Path Selection
  7. 4Hardware Description
    1. 5.1  Functional Block Diagram
    2. 5.2  GPIO Mapping
    3. 5.3  Reset
    4. 5.4  Clock
    5. 5.5  Memory Interface
      1. 5.5.1 QSPI
      2. 5.5.2 Board ID EEPROM
    6. 5.6  Ethernet Interface
      1. 5.6.1 RGMII
      2. 5.6.2 PRU-ICSS
      3. 5.6.3 LED Indication in RJ45 Connector
    7. 5.7  I2C
    8. 5.8  Industrial Application LEDs
    9. 5.9  SPI
    10. 5.10 UART
    11. 5.11 MCAN
    12. 5.12 FSI
    13. 5.13 JTAG
    14. 5.14 Test Automation Header
    15. 5.15 LIN
    16. 5.16 MMC
    17. 5.17 ADC and DAC
    18. 5.18 HSEC Pinout and Pinmux Mapping
  8. 5References
    1. 6.1 References
    2. 6.2 Other TI Components Used in This Design
  9.   Revision History
  10.   A E2 Design Changes
  11.   B E1 HSEC Pinout Table

4.11 MCAN

The Control Card is equipped with a single MCAN transceiver (TCAN1024H-Q1) that is connected to the MCAN1 interface of the AM263x SoC. The MCAN0 interface of the AM263x SoC is mapped directly to the HSEC connector.

GUID-20220426-SS0I-12XW-TV1Q-QBW7GPWWZ0R3-low.png Figure 4-19 MCAN Transceiver

The MCAN transceiver has two power inputs, VIO is the transceiver I/O level shifting supply voltage and VCC is the transceiver 5 V supply voltage. The SoC CAN data transmit data input is mapped to TXD of the transceiver and the CAN receive data output of the transceiver is mapped to the MCAN RX signal of the SoC with a series termination resistor close to the transceiver.

The standby control signal is a GPIO signal sourced from the IO expander. The STB control input is active high and a pulldown resistor is used to have the transceiver operate in normal mode as opposed to the standby mode that is default due to a weak internal pull up.

The system has a 120 Ω split termination on the CANH and CANL signals to improve EMI performance. Split termination improves the electromagnetic emissions behavior of the network by eliminating fluctuations in the bus common-mode voltages at the start and end of message transmissions.

The low- and high-level CAN bus input output lines are terminated to a three pin header.