SPRUJ73 December   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Read This First
        1. 1.1.1.1 Sitara MCU+ Academy
        2. 1.1.1.2 Important Usage Notes
    2. 1.2 Kit Contents
  6. 2Hardware Description
    1. 2.1 Component Identification
    2. 2.2 Power Requirements
      1. 2.2.1 Power Input Using USB Type-C Connector
      2. 2.2.2 Power Status LEDs
      3. 2.2.3 Power Tree
    3. 2.3 Functional Block Diagram
    4. 2.4 Header Information
    5. 2.5 Interfaces
      1. 2.5.1 ADC
      2. 2.5.2 LIN
      3. 2.5.3 MCAN
      4. 2.5.4 TRACE/GPMC Muxing Scheme
      5. 2.5.5 GPMC Memory Interface
        1. 2.5.5.1 PSRAM
        2. 2.5.5.2 GPMC Memory Footprint
        3. 2.5.5.3 NOR FLASH
      6. 2.5.6 TI 14-Pin Header
      7. 2.5.7 MIPI-60 Connector
    6. 2.6 HSEC Pinout
  7. 3Additional Information
    1. 3.1 If You Need Assistance
    2.     Trademarks
  8. 4References
    1. 4.1 Reference Documents
    2. 4.2 Other TI Components Used in This Design
  9. 5Revision History

2.5.3 MCAN

The AM263x controlCARD Docking Station is equipped with a single dual MCAN transceiver (TCAN1046A-Q1) that is connected to the MCAN0 and MCAN2 interfaces of the AM263x SoC. The MCAN0 and MCAN2 interfaces of the AM263x SoC are mapped directly to the AM263x controlCARD HSEC connector.

GUID-20230111-SS0I-VDF0-GWWS-W0XMWC5XFKB0-low.png Figure 2-9 MCAN Transceiver

The MCAN transceiver has two power inputs, VCC1 is the 5V supply voltage for channel 1 of the transceiver and VCC2 is the 5V supply voltage for channel 2 of the transceiver. The AM263x SoC MCAN0 data transmit data input is mapped to TXD1 of the transceiver and the SoC MCAN2 data transmit data input is mapped to TXD2 of the transceiver. The CAN receive data output of the transceiver RXD1 is mapped to the MCAN0 RX signal of the AM263x SoC and the data output of the transceiver RXD2 is mapped to the MCAN2 RX signal of the AM263x SoC. Both RXD1 and RXD2 nets have a series termination resistor close to the transceiver.

The standby control signals for each channel are GPIO signals sourced from the AM263x SoC and AM263x controlCARD HSEC connector, GPIO43 for STB1 and GPIO49 for STB2. While the MCAN transceiver's STB inputs have an internal pull-up, the external pull-down resistor defaults the transceiver for normal operation.

The system has a 120Ω split termination on the CANH1/CANH2 and CANL1/CANL2 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 I/O lines for each channel are terminated to a three pin header.