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TPS25762-Q1: Query regarding BC1.2 and D+, D-

Terry Hu
Expert 3570 points
Part Number: TPS25762-Q1
Other Parts Discussed in Thread: TPS254900A-Q1

Hi Team,

Could you kindly advise:

1) What's the behavior of TPS25762-Q1's PA_DP/PA_DM PIN after BC1.2 negotiation is done? Will these 2ports turn to Hi-Z internal?

2) Customer would like to connect PA_DP/PA_DM to USB port D+/D- for BC1.2. HOST IC also need to connect with USB connector D+/D- for USB2.0 normal communication. Do you have any recommendation for the D+/D- connection for USB signal integrity? See below simple block diagram.

Many thanks!

Regards,

Terry

  • +1
    TI__Mastermind 18031 points

    Hi Terry,

    Suggested not both connecting to 762 and host IC. 

    One BC1.2 controller should be added, such as TPS254900A-Q1.

    So USB-C connector connects to TPS254900A-Q1 then to Host IC. 

    If host IC is integrated with BC1.2 controller, TPS254900A-Q1 can be saved.