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

2.1.3 Using Customer Installable I/O Options for Current Limiting, Pullup and Pulldown, Noise Filtering

The generic 8-pin CAN EVM has footprints on the PCB for the installation of various filtering and protection options to adapt the EVM to match CAN network topology requirements if the EVM is being used as a CAN node.

Each digital input or output pin has footprints allowing for series current-limiting resistors (default populated with 0Ω), pullup or down resistors (depending on pin use), and a capacitor to GND which allows for RC filters when configured with a series resistor. Table 2-5 lists these features for each of the digital input and output pins of the EVM. Replace or populate the RC components as necessary for the application.

Table 2-5 RC Filter and Protection Lists
Device PinJumperSeries RPullup and PulldownC to GNDDescription
No.DescriptionTypePullupPulldown
1TXDInputN/AN/AR16R15 PU/

R18 PD

C5

4

RXDOutputN/AN/AR21R20 PU/

R22 PD

C9

5NCNo ConnectN/AN/AN/AN/AN/A
SHDN, AB, EN, and LBKInputR1/R2 (J1)R4/R5 (J1)

N/A

N/AC1
FAULTOutput

R1/R2(J1)

R4/R5 (J1)

N/A

N/AC1
VREF and SPLITOutputN/AN/A

N/A

N/AC1/C3Split termination: J1 to route output to split termination center point capacitor C3. EMC for systems not using split termination: C1 to GND.
VIO and VRXDSupply Input

N/A

N/A

N/A

R2 PU/ R4 PD

C1/C10/C18Use J3, J8, P1 and TP9 as necessary to provide supply input.
8SW, RS, S, STBInputR6/R7 (J2)R9/R11 (J2)

N/A

N/A

N/A

R9 pulldown to GND (J2) user-installable for use with slope mode on devices with RS pin.
NCNo ConnectN/AN/AN/AN/AN/A