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TPS65983B: How to modify 0x29 control config register?

Gim Song
Intellectual 1120 points
Part Number: TPS65983B
Other Parts Discussed in Thread: TPS65982

Hi,

There is a problem when TPS65983B is used for Titan Ridge (notebook) where 0x29 control config cannot be change. This option is not shown on TPS65983 application customization tool. It seems (0x29) to be read only register in 983B when we try to access it.

We would like TPS65983B to behave like TPS65982 for 0x29 setting as Prefers Power Source and Prefers Data DFP (Host).

Please advise how to do this.

Thanks.  

Best regards,

Gim Song

  • 0
    TI__Expert 4455 points
    Hi,

    The TPS65983B is designed to exactly match specific Intel Thunderbolt reference designs. These design constraints are part of the device firmware and are also present in the TPS65983B specific Application Configuration Tool. This means customization is limited to the options present in the '83B Tool and that some options present for other parts (like TPS65982) are not available for '83B.

    Regards,
    Scott
  • 0 in reply to Scott T
    TI__Intellectual 1120 points

    Hi Scott,

    Appreciate your feedback. Now we understand that TPS65983B Application Congfiguration Tool is specific for Intel Thunderbolt reference design as device and not as host.

    Thanks.

    Best regards,

    Gim Song