SLOU560 July   2022 TAS2781

 

  1.   Abstract
  2.   Trademarks
  3. 1Description
  4. 2Specifications
    1. 2.1 Power Supply Configurations
  5. 3Device Configuration
    1. 3.1 Jumper Settings
    2. 3.2 Test Points
  6. 4Software
    1. 4.1 PPC3 Overview
    2. 4.2 Device Control Panel
    3. 4.3 Register Map
    4. 4.4 Direct I2C
  7. 5Mono Setup Quick Start
  8. 6Digital Audio Interfaces
  9. 7EVM Schematics
  10. 8Schematic and Layout Guidelines
  11. 9Bill of Materials

2.1 Power Supply Configurations

TAS2781EVM provides flexible power supply configurations for different performance tests and use cases.

By default, the board is completely powered by VIN which can be supplied by J20 or J21 from 3.5 V to 12 V. This voltage is used to generate all the voltage rails: 5 V for PVDDL, 7 V for PVDDH, 3.3 V, 1.8 V, 1.2 V and 1 V for different logic levels.

Alternatively PVDDL and PVDDH can be supplied directly from an external supply using J1 and J10 connectors respectively. Remove J2 and J3 when using an external PVDDL voltage on J1. Remove J11 and J12 when using an external PVDDH voltage on J10. Make sure VIN is still being supplied to EVM as this voltage is used to generate different lower voltage rails on the board. Consider the voltage range for each supply rail as described in Table 2-1.