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DS90UB941AS-Q1: FPD3_LINK_RDY=0

Sveinn Jia
Expert 5605 points
Part Number: DS90UB941AS-Q1

Tool/software:

Hi team，

During vehicle testing, I'm experiencing a DS90UB941AS-Q1 FPD3_LINK_RDY=0 error. I'm wondering:
1. What's the specific detection mechanism for this?
2. Under what circumstances would this register report a value of 0?

Regards,

Sveinn

  • 0
    TI__Mastermind 34335 points

    Hi Sveinn,

    The FPD3_LINK_RDY bit is asserted when there is valid back-channel detection (LINK_DETECT = 1) and when the deserializer capabilities are decoded (941AS 0x20 & 0x21). This bit can report 0 if there is a disruption to the back-channel or overall link.

    What deserializer is the UB941AS connected to and is this single or dual mode? Are there any issues with the display when FPD_LINK_RDY=0 is detected?

    Best,

    Jack