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TPS65987D: How to connect I2C between TPS65987, TUSB1046 and TUSB8044A for docking application

Bryant Shih
Prodigy 65 points
Part Number: TPS65987D
Other Parts Discussed in Thread: TUSB8044A, TPS65987, , TUSB8044

We design a USB-C docking using TPS65987 and it needs to pass the USB-C certification. We chose TUSB1046 and TUSB8044A as MUX and USB Hub. Below items are design questions. 

  1. Could you provide USB-C docking reference design which can pass the USB-C certification?

  2. Dose TPS65987 set the billboard controller of TUSB8044A automatically by I2C3 without any additional setting from the processor? 

  3. Is the I2C connection correct in the below diagram?

  • 0
    TI__Mastermind 36756 points

    Hi Bryant,

    1. You can refer to the TPS65987EVM with the 10G-EXPANSION-EVM for a Docking design using TPS65987D and TUSB1046. We do not have a design including the TUSB8044 but it can be added like in your block diagram.

    2. No, the I2C master of the TPS65987D would need to be configured to set up billboarding on the TUSB8044. You can refer to the following app note on configuring the I2C Master:

    3. Yes, I2C3 can be used as the I2C master from TPS65987D.

    If this answers your question, PLEASE select This resolved my issue

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Prodigy 65 points
    Hi Eric

    Thinks for the answers. It helps a lot.

    Bryant