SLLU397 April   2025 TCAN1043-Q1 , TCAN1043G-Q1 , TCAN1043H-Q1 , TCAN1043HG-Q1 , TCAN1043N-Q1 , TCAN1144-Q1 , TCAN1145-Q1 , TCAN1146-Q1 , TCAN1463-Q1 , TCAN1473-Q1 , TCAN1473A-Q1

 

  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  Power Supply Inputs VBAT, VCC and VIO
        2. 2.1.1.2  I/O Headers (J2, J4)
        3. 2.1.1.3  Pin 14
        4. 2.1.1.4  TXD Input
        5. 2.1.1.5  RXD Output
        6. 2.1.1.6  Pin 11
        7. 2.1.1.7  Pin 6
        8. 2.1.1.8  Pin 8
        9. 2.1.1.9  Pin 7
        10. 2.1.1.10 WAKE Pin
        11. 2.1.1.11 SIC Network Configuration (J10 and J11)
      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

2.1.2 Using CAN Bus Load, Termination, and Protection Configurations

The generic 14-pin CAN EVM is populated with one 120Ω resistor selectable via jumper, between CANH and CANL, and the 120Ω split termination (two 60Ω resistors in series) including the split capacitor. When using only split termination, the EVM is used as a terminated end of a bus. For electrical measurements to represent the total loading of the bus, use both the split termination and the 120Ω resistor in parallel to give the standard 60Ω load for parametric measurement. Table 2-4 summarizes how to use these termination options.

Table 2-4 Bus Termination Configuration
Termination

Configuration

Termination JumpersSplit Termination

Resistors

Split Termination Capacitor
JumperJ5J6J7R8R9C5
No terminationOpenOpenOpenNot availableNot availableNot available
120Ω standard terminationOpenShortedOpen
60Ω loadShortedShortedShorted
Split termination
(common mode stabilization)		ShortedOpenShorted60Ω60Ω4.7nF

The EVM also has footprints for various protection schemes to enhance robustness for extreme system-level EMC requirements. Table 2-5 summarizes these options.

Table 2-5 Protection and Filtering Configuration
ConfigurationFootprint ReferenceUse CasePopulation and Description
Series resistors or common mode chokeR6/R10 or L1 (common footprint)Direct CAN transceiver to bus connectionR6 and R10 populated with 0Ω (default population)
Series resistance protection, CAN transceiver to bus connectionR6 and R10 populated with MELF resistor as necessary for harsh EMC environment
CM choke (bus filter)L1 populated with CM choke to filter noise as necessary for harsh EMC environment
Bus filtering caps transient protectionC3/C6Bus filterFilter noise as necessary for harsh EMC environment. Use filter caps in combination with L1 CM choke
D1Transient and ESD protectionTo add extra protection for system level transients and ESD protection,

D1 populated with ESD2CAN24-Q1