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DS90UB953A-Q1: Currently they can only get one 953 information when use two 953

Frank Xiao
Genius 12055 points
Part Number: DS90UB953A-Q1

Hi team,

My customer is using two DS90ub953 and one DS90ub954 in the system as below. The two DS90UB953 have different address, Currently they can only get one 953 information, port 0 or port 1.  Do you have some experience about the phenomenon? Thanks.

BTW: What's the function of VC? whether they have connection with CS?

Thanks.

  • 0
    TI__Guru** 103215 points

    Hello Frank,

    In order to access the data from port 0 or port 1 respectively you must select the corresponding RX port in register 0x4C. For example if you want to read/write to a remote 953 on RX1, you must set 0x4C = 0x12.

    Virtual channels are used to identify unique camera data from the two RX ports when they are both outputting data through the same CSI-2 interface. The virtual channel is part of the packet header for each source and allows the processor to differentiate them. 

    Best Regards,

    Casey