SPMU379A April   2026  – July 2026 TPS25751A

 

  1.   1
  2.   Read This First
    1.     Notational Conventions
    2.     Glossary
    3.     Related Documents
    4.     Support Resources
    5.     Trademarks
  3. 1Introduction
    1. 1.1 Purpose and Scope
  4. 2PD Controller Host Interface Description
    1. 2.1 Overview
    2. 2.2 Register and Field Notation
  5. 3Unique Address Interface
    1. 3.1 Unique Address Interface Protocol
  6. 4PD Controller Policy Modes
    1. 4.1 Overview
    2. 4.2 Source Policy Mode
    3. 4.3 Sink Policy Mode
  7. 5Register Overview
    1. 5.1 TPS25751A Registers
  8. 64CC Task Detailed Descriptions
    1. 6.1 Overview
    2. 6.2 CPU Control Tasks
      1. 6.2.1 'Gaid' - Return to Normal Operation
      2. 6.2.2 'GAID' - Cold Reset Request
    3. 6.3 PD Message Tasks
      1. 6.3.1 'SWSk' - PD PR_Swap to Sink
      2. 6.3.2 'SWSr' - PD PR_Swap to Source
      3. 6.3.3 'SWDF' - PD DR_Swap to DFP
      4. 6.3.4 'SWUF' - PD DR_Swap to UFP
      5. 6.3.5 'GSkC' - PD Get Sink Capabilities
      6. 6.3.6 'GSrC' - PD Get Source Capabilities
      7. 6.3.7 'SSrC' - PD Send Source Capabilities
      8. 6.3.8 'GPPI' - PD Get Port Partner Information
      9. 6.3.9 'MBRd' - Message Buffer Read
    4. 6.4 Power Switch Tasks
      1. 6.4.1 'SRDY' - System Ready to Sink Power
      2. 6.4.2 'SRYR' - SRDY reset
    5. 6.5 Patch Bundle Update Tasks
      1. 6.5.1 'PBMs' - Start Patch Burst Mode Download Sequence
      2. 6.5.2 'PBMc' - Patch Burst Mode Download Complete
      3. 6.5.3 'PBMe' - End Patch Burst Mode Download Sequence
      4. 6.5.4 'GO2P' - Go to Patch Mode
      5. 6.5.5 'FLrd' - Flash Memory Read
      6. 6.5.6 'FLad' - Flash Memory Write Start Address
      7. 6.5.7 'FLwd' - Flash Memory Write
      8. 6.5.8 'FLvy' - Flash Memory Verify
    6. 6.6 System Tasks
      1. 6.6.1 'ANeg' - Auto Negotiate Sink Update
      2. 6.6.2 'DBfg' - Clear Dead Battery Flag
      3. 6.6.3 'I2Cr' - I2C Read Transaction
      4. 6.6.4 'I2Cw' - I2C Write Transaction
      5. 6.6.5 'GPsh' - set GPIO high
      6. 6.6.6 'GPsl' - set GPIO low
  9. 7User Reference
    1. 7.1 PD Controller Application Customization
    2. 7.2 Loading a Patch Bundle
    3. 7.3 AUTO_NEGOTIATE_SINK Register
      1. 7.3.1 AUTO_NEGOTIATE_SINK Usage Example 1
      2. 7.3.2 AUTO_NEGOTIATE_SINK Usage Example 2
      3. 7.3.3 AUTO_NEGOTIATE_SINK Usage Example 3
      4. 7.3.4 AUTO_NEGOTIATE_SINK Usage Example 4
    4. 7.4 Liquid Detection Registers
    5. 7.5 GPIO Events
  10. 8Revision History

6.5.1 'PBMs' - Start Patch Burst Mode Download Sequence

Table 6-15 'PBMs' - Start Patch Burst Download Sequence
DescriptionThe 'PBMs' Task starts the patch loading sequence. This Task initializes the firmware in preparation for a patch bundle load sequence and indicates what the patch bundle will contain.
INPUT DATAXBitNameDescription
Byte 6: Burst Mode Timeout
7:6Reserved
5:0Timeout valueTimeout value for this task. A non-zero value must be used, it is recommended to always use 0x32 in this field (5 seconds) (LSB of 100ms).
Byte 5: I2C target for downloading patch.
7Reserved
6:0I2C Target AddressThe following target addresses are not valid:
  • 0x00
  • The I2Ct target address of any port selected using the ADCINx pins. Refer to data-sheet.
Bytes 0-3: Low Region Binary bundle size in of bytes: [ Byte3, Byte2, Byte1, Byte0]
31:24Byte3 of bundle size
23:16Byte2 of bundle size
15:8Byte1 of bundle size
7:0Byte0 of bundle size
OUTPUT DATAXBitNameDescription
7:0PatchStartStatusStatus of the patch start.
0x00Patch start success
0x04Invalid bundle size
0x05Invalid target address
0x06Invalid Timeout value
Task CompletionThe 'PBMs' Task completes after output has a valid PatchStartStatus. If MODE register (0x03) is equal to 'APP ', then this Task will be rejected.
Side EffectsWhen the 'PBMs' is successful, the second target address will be set to the input value.
Additional InformationThe host can only issue a 'PBMs' Task to the I2Ct port of the PD controller. If the host issues 'PMBs' a second time, then the PD controller ignores the DATAX input, restarts the burst-mode timer, and resets the pointer to the beginning of the patch space in RAM. If the MODE register is 'APP ' indicating that the PD controller is in the APP mode, then it will reject the 'PBMs' Task.