SLVAF24 April   2021 TPS65988

 

  1.   Trademarks
  2. 1Automatic RDO for Explicit Contracts in SINK Role
    1. 1.1 Autonegotiate Sink Register (0x37)
    2. 1.2 Automatic PDO Selection as a Sink
    3. 1.3 Autonegotiate PDO Selection Flow
    4. 1.4 Autonegotiate Behavior Examples
  3. 2Multi Port Source Policy Management
    1. 2.1 Multi Port Source Policy Management Flow
  4. 3Multiport Sink Policy Management
  5. 4Revision History

1 Automatic RDO for Explicit Contracts in SINK Role

This feature is applicable to both TPS65987 and TPS65988 devices. The feature allows the TPS6598x device in a Sink role to select one PDO from a list of PDOs advertised by the Source connected to its port as part of its Source Capabilities during the process of negotiating / renegotiating an explicit power contract. The parameters advertized by this PDO are then used to construct an RDO to be sent out as part of the Request message by the TPS6598x device on the applicable port.

The singling out of a PDO from a list of Source PDOs is largely based on the following criteria:

  1. Power requirement as per TPS6598x configuration
  2. Priority of Offer over Voltage / Current / Power

This is configurable in the Autonegotiate Sink Register (0x37).