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TDA4VH-Q1: TDA4VH-Q1 Sysconfig Warnings

Pranjali Andhare
Intellectual 390 points
Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: SYSCONFIG,

Tool/software:

Hi I am using sysconfig file for TDA4VH-Q1 SOC.I am getting following warnings for DP port

 

Can you please tell me how to resolve this warnings?

  • 0
    TI__Guru 61870 points

    Pranjali, It seems that you are selecting the 1.8V Display port pins, and the MCAN pin selected is at a different voltage node at 3.3V.

    As I read on the HPD- its a 3.3V TTL level, while the DP TX are SERDES pins which are referred w.r.t SERDES_0v8 and SERDES1v8 supply levels.

    I will also let my colleague be aware of this to look at.

  • 0 in reply to ShreyasRao
    TI__Guru 61870 points

    You might need a level shifter for 3.3V to 1.8V compatibility and can suppress the warning as I see that the HPD voltage level is 3.3V while the DP TX signals are supposed to be at 1.38V max p-p differential according to the VESA std.