SLVUCR8A September   2023  – March 2024 TPS25751

 

  1.   1
  2.   Read This First
    1.     Notational Conventions
    2.     Glossary
    3.     Related Documents
    4.     Support Resources
    5.     Trademarks
  3. 1Introduction
    1. 1.1 Introduction
      1. 1.1.1 Purpose and Scope
    2. 1.2 PD Controller Host Interface Description
      1. 1.2.1 Overview
      2. 1.2.2 Register and Field Notation
    3. 1.3 Unique Address Interface
      1. 1.3.1 Unique Address Interface Protocol
  4. 2PD Controller Policy Modes
    1. 2.1 Overview
    2. 2.2 Source Policy Mode
    3. 2.3 Sink Policy Mode
  5. 3TPS25751 Registers
  6. 44CC Task Detailed Descriptions
    1. 4.1 CPU Control Tasks
      1. 4.1.1 'Gaid' - Return to Normal Operation
      2. 4.1.2 'GAID' - Cold Reset Request
    2. 4.2 PD Message Tasks
      1. 4.2.1 'SWSk' - PD PR_Swap to Sink
      2. 4.2.2 'SWSr' - PD PR_Swap to Source
      3. 4.2.3 'SWDF' - PD DR_Swap to DFP
      4. 4.2.4 'SWUF' - PD DR_Swap to UFP
      5. 4.2.5 'GSkC' - PD Get Sink Capabilities
      6. 4.2.6 'GSrC' - PD Get Source Capabilities
      7. 4.2.7 'GPPI' - PD Get Port Partner Information
      8. 4.2.8 'SSrC' - PD Send Source Capabilities
      9. 4.2.9 'MBRd' - Message Buffer Read
    3. 4.3 Patch Bundle Update Tasks
      1. 4.3.1 'PBMs' - Start Patch Burst Mode Download Sequence
      2. 4.3.2 'PBMc' - Patch Burst Mode Download Complete
      3. 4.3.3 'PBMe' - End Patch Burst Mode Download Sequence
      4. 4.3.4 'GO2P' - Go to Patch Mode
    4. 4.4 System Tasks
      1. 4.4.1 'DBfg' - Clear Dead Battery Flag
      2. 4.4.2 'I2Cr' - I2C Read Transaction
      3. 4.4.3 'I2Cw' - I2C Write Transaction
  7. 5User Reference
    1. 5.1 PD Controller Application Customization
    2. 5.2 Loading a Patch Bundle
    3. 5.3 GPIO Events
    4. 5.4 AUTO_NEGOTIATE_SINK Register
      1. 5.4.1 AUTO_NEGOTIATE_SINK Usage Example 1
      2. 5.4.2 AUTO_NEGOTIATE_SINK Usage Example 2
      3. 5.4.3 AUTO_NEGOTIATE_SINK Usage Example 3
      4. 5.4.4 AUTO_NEGOTIATE_SINK Usage Example 4
  8. 6Revision History

4.3.4 'GO2P' - Go to Patch Mode

Table 4-15 'GO2P' - Forces PD Controller to Return to 'PTCH' Mode and Wait for Patch Over I2C
Description

The 'GO2P' Task causes the PD controller to re-enter the patch mode (MODE = 'PTCH').

INPUT DATAXNone
OUTPUT DATAXByte 1: Standard Task Return Code.
Task Completion

The 'GO2P' Task completes after the PD controller has re-entered the patch mode.

  • If the PD controller has re-entered the patch mode and the MODE register reads as 'PTCH'.

The 'GO2P' Task is considered rejected if:

  • The PD controller did not enter the 'APP ' mode without receiving a patch over I2C.
  • BOOT_STATUS.PatchConfigSource does not read as 3h or 4h.
Side Effects

When the 'GO2P' Task is successful, the MODE register will read as 'PTCH' and the USB PD PHY will be disabled. The PD Controller can temporarily NAK I2C transactions. The host must wait for the IRQ signal to assert (because INT_EVENT1.ReadyForPatch is asserted), and then push the patch as soon as possible.

Additional Information

The 'GO2P' Task must only be used when the ADCINx configuration option NegotiateHighVoltage is used.
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