SLLU326A May   2022  – June 2022 TLIN1431-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Features
    2. 1.2 Description
  4. 2EVM Setup and Features
    1. 2.1  Startup Mode Configurations
      1. 2.1.1 Pin and SPI Modes
      2. 2.1.2 Wake Request (WKRQ) vs. Inhibit Output (INH)
    2. 2.2  Commander and Responder Configurations
    3. 2.3  Local Wake-Up
    4. 2.4  Channel Expansion
    5. 2.5  VBAT Voltage Divider
    6. 2.6  Reset Input
    7. 2.7  Logic-Level LIMP and WAKE Signals
    8. 2.8  High-Voltage Signal Monitoring
    9. 2.9  TXD and RXD
    10. 2.10 VCC Load Testing
    11. 2.11 SPI Interface
  5. 3Jumpers, Headers, Connectors, Test Points, and Switches
  6. 4Bill of Materials
  7. 5Schematic

2.4 Channel Expansion

The VCC, FSO, HSS, and VSUP pins allow for channel expansion, such that the TLIN1431-Q1 can control an external transceiver or similar device. This effectively allows for an additional communication channel to be controlled via the TLIN1431-Q1.

Figure 2-3 Channel Expansion with LIN Transceiver
Figure 2-4 Channel Expansion with CAN Transceiver

Note that the VCC and FSO pins are logic-level voltages, while the HSS and VSUP signals are high-voltage outputs. Use care when implementing these outputs to ensure the proper voltage design requirements are met.