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DS90UH941AS-Q1: CNTRL_ERR_HSRQST ERROR meaning

Roy Chou1
Genius 16130 points
Part Number: DS90UH941AS-Q1

Hi Team,

We used external DSI and find the CNTRL_ERR_HSRQST ERROR  = '1'. Can you let me know the meaning and which point may be the root cause?

Roy

  • 0
    TI__Guru** 103215 points

    Hello Roy,

    The error indicates that there was a problem during the initial stages of a start of transmission sequence from the host:

    The most likely cause would be that the host did not drive TLPX (01) for at least 50ns which is the minimum value. 

    Also this could be a transient error from the startup. Make sure to clear any initial errors that may have occurred from during startup of the DSI transmitter by reading these regs back after initialization once first. 

    Best Regards,

    Casey