SLLU350 April   2022 TUSB1142

 

  1.   Trademarks
  2. 1Overview
    1. 1.1 What is the TUSB1142 EVM?
    2. 1.2 What is Included in the TUSB1142 EVM?
    3. 1.3 What Does the EVM Look Like?
  3. 2Hardware Configuration
    1. 2.1 Power
    2. 2.2 Configuration Jumpers
    3. 2.3 CEQ Configuration
    4. 2.4 SSEQ Configuration
    5. 2.5 Local I2C Access
  4. 3Quick Start Guide
  5. 4Schematics
    1.     14
    2.     15
    3.     16

2.1 Power

The EVM board can be powered from either the Micro-B receptacle (J1) VBUS or from an external power supply through the barrel jack (J2). The EVM defaults to being powered from the Micro-B receptacle VBUS.

If powering EVM from barrel jack, make sure R54 is unpopulated. Once removed, a jumper will need to be placed across JMP19 pins 1 and 2.

The USB Type-C receptacle VBUS uses TPS25820 as the VBUS power switch needed for USB Type-C systems. Power is sourced from the Micro-B receptacle VBUS by default. JMP1 can be used to change the power source at the USB Type-C receptacle VBUS pins.

If powering USB Type-C VBUS from barrel jack or other source, make sure R14 is unpopulated. Once removed, a jumper will need to be placed across JMP1 pins 1 and 2 to use power form the barrel jack. If a different external power source is used, connect the source directly to JMP 1 pin 2.

Note: Limit VBUS voltage and voltage from barrel jack to no more than 6 V.