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Original question:

DS90UB948-Q1: Touch functionality in IVI display

DS90UB948-Q1: PASS Pin Configuration

Shubham Jagtap
Prodigy 110 points
Part Number: DS90UB948-Q1


Hello Concern,

Can we use the SDOUT/ GPIO0 / PASS pin instead D_GPIO0/MOSI for giving the interrupt to Serializer through Backchannel.

can we configure the PASS pin as GPIO when we are not using BIST Mode and it is Disabled.

  • 0
    TI__Intellectual 2825 points

    Hi Shubham,

    Shubham Jagtap said:
    Can we use the SDOUT/ GPIO0 / PASS pin instead D_GPIO0/MOSI for giving the interrupt to Serializer through Backchannel.

    There should be no issue using SDOUT/ GPIO0 / PASS to pass through an interrupt signal. However, there is a difference in the timing constraints of both pins and D_GPIO is faster. Do you have any specific timing needs for the interrupt?

    The configurations for each are in the datasheet and I have included the relevant table for GPIO0 (Table 7-2) below. In order to use GPIO0, BISTEN needs to be set to 0 to disable BIST mode. 

    Please let me know if you have any additional questions!

    Best,
    Corinne