SLLU385A July   2024  – September 2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1.     Jumper Information
    2. 2.1 EVM Setup and Operation
      1. 2.1.1 Overview and Basic Operation Settings
        1. 2.1.1.1  VCC Power Supply (J3, P2, TP10)
        2. 2.1.1.2  I/O Power Supply VIO or VRXD (J3, J8, P1,or TP9)
        3. 2.1.1.3  Main Supply and I/O Header (J3)
        4. 2.1.1.4  TXD Input (J3 or TP5)
        5. 2.1.1.5  RXD Output (J3 or TP6)
        6. 2.1.1.6  Generic Pin 8 (J2, J3, or TP3)
        7. 2.1.1.7  Pin 8 - J2 Configurations (3-Way Jumper)
        8. 2.1.1.8  TP3 Configuration
        9. 2.1.1.9  Generic Pin 5 (J1, J3 or TP1)
        10. 2.1.1.10 Pin 5 – J1 Configurations (4-Way Jumper)
        11. 2.1.1.11 TP1 Configuration
        12. 2.1.1.12 J8 Configuration
        13. 2.1.1.13 SIC Network Configuration (J4 & J5)
      2. 2.1.2 Using CAN Bus Load, Termination, and Protection Configurations
      3. 2.1.3 Using Customer Installable I/O Options for Current Limiting, Pullup and Pulldown, Noise Filtering
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Revision History

Jumper Information

Table 2-1 lists the jumper connections for the EVM.

Table 2-1 Jumper Connections
ConnectionTypeDescription
J1A, J1B, J1C4-way

jumper

Functional use of generic pin 5. Options for use are:

  • J1A1: VIO for transceiver with digital I/O voltage input on pin 5. Populate C10 or C18 if pin 5 used as VIO. Provides customer installable pulldown R4 to GND, and 0-Ohm pullup placeholder R2
  • J1A3: 0Ω pulldown to GND for transceiver with digital input on pin 5
  • J1B: Active split termination for CAN transceiver with VREF or SPLIT on pin 5. Short J1A2 – J1B and populate R3 for split termination as required
  • J1C: 4.7kΩ pullup to VCC for transceiver with digital input on pin 5, or external pullup for open drain output on pin 5
J2A,

J2B

3-way jumper

Used for mode selection or polarity configuration. Options for use are:

  • J2A1: 4.7kΩ pullup to VIO for transceivers with digital input on pin 5. Provides customer installable pulldown for devices with slew rate control RS pin
  • J2A3: 0Ω pulldown to GND for transceiver with digital input on pin 5
  • J2B: 4.7kΩ pullup to VCC for transceivers with digital input on pin 5
J312-pin headerConnection for access to all critical digital I/O, supply, and GND for driving the CAN transceiver externally with test equipment or interfaced to a processor EVM
J42-pin jumperConnect SIC network to CANH. Must be used in combination with J5
J52-pin headerConnect SIC network to CANL. Must be used in combination with J4

J6

2-pin jumper

Connect R13, a 120Ω CAN termination to the bus. Along with the already populated 120 ohms (R10 and R14 in series), this simulates the true CAN bus impedance of 60 ohms (two 120 ohm terminating resistors in parallel).

Shunting J6 places R13 on the bus, not placing a shunt opens the bus and only leaves R10 and R14 for the termination.

J7

4-pin header

CAN bus connection (CANH, CANL) and GND
J8

2-pin jumper

VIO and VCC supply connection. Provides ability to short VCC and VIO together

J9

DSUB9 Connector

Provides an optional way to connect CANH, CANL, and GND all through a standard DB9 CAN pinout rather than through a regular header.

W1

Ground clip

Provides extra connection to GND

TP1Test pointDevice generic pin 5 test point
TP2CANH (bus) test point
TP3Device generic pin 8 test point
TP4CANL (bus) test point
TP5TXD, Device pin 1 test point
TP6RXD, Device pin 4 test point
TP7,

TP8, TP11, TP12

GND test points
TP9VIO test point
TP10VCC test point