SLVAFF7B December   2022  – November 2024 TPS25762-Q1 , TPS25763-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

4.1 Overview

Firmware update refers to the update of the firmware's application configuration and or code patch using a patch bundle through the external EEPROM or external host. This application note covers a set of 4CC ASCII commands (see Appendix B: Using 4CC Commands) that enables a host to either program the patch bundle onto an external EEPROM (see Figure 4-1) when the device is in EEPROM Boot Mode or directly download the patch bundle onto the device’s SRAM (see Figure 4-2) when it is in HUB/MCU Boot Mode.

Using a Host to Program the EEPROM for EEPROM Boot Mode Figure 4-1 Using a Host to Program the EEPROM for EEPROM Boot Mode
Booting Directly from a Host Using HUB/MCU Boot Mode Figure 4-2 Booting Directly from a Host Using HUB/MCU Boot Mode