SLVAFF7A december   2022  – august 2023 TPS25762-Q1 , TPS25772-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Purpose and Scope
  5. 2Firmware Boot Code Brief
  6. 3Patch Bundle Brief
  7. 4Firmware Update
    1. 4.1 Overview
    2. 4.2 EEPROM Firmware Update
      1. 4.2.1 EEPROM Memory Organization
      2. 4.2.2 EEPROM Update - 4CC Task Command Set
      3. 4.2.3 EEPROM Patch Bundle Update Process
    3. 4.3 PD Controller Patch Bundle Download
      1. 4.3.1 Patch Bundle Download - 4CC Task Command Set
      2. 4.3.2 Burst Mode Patch Download Process
  8.   Appendix A: TVSP Boot Configuration Settings
  9.   Appendix B: Using 4CC Commands
  10.   Revision History

3 Patch Bundle Brief

The firmware patch bundle is used for two purposes:

  1. Provide code patch to replace functions inside the application ROM.
  2. Provide configuration for the device.

As described in the previous section, the firmware patch bundle can be loaded from an external EEPROM or from a host after POR by using the device’s I2C host interface. The patch bundle is from a single source. If the configuration and patch data do not load successfully due to communications error, the boot code will use the factory device configurations.