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SN75DP130: Questions about SN75DP130 Timing Issue

Part Number: SN75DP130

Hi Team,

Customer is using SN75DP130 in their design, but facing some no signal issues with high probabilistic, and they found it may related to DP-HPD timing. When we power supply DP130 firstly and then pull-high DP-HPD from low, this issue can be avoided.

So the questions are:

1. Do we have the timing requirements for DP-HPD and DP130 power supply during startup?

2. How do we deal with DP-HPD signal from SoC to Source, pass-through or with some processing?

Customer's application block diagram is as below for the reference:

Thanks.