- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
Is there a register in uh927/uh928 for optimize the interrupt signal transfer timing?
We have the interrupt setup as below:
The touch interrupt output link directly connects to uh928 INTB_IN pin
uh928 connects to uh927 with FPDLINK III cable
uh927 INTB pin connects to host controller GPIO.
After configuring uh927 register HDCP ICR (0xC6) to 0x21 and following the interrupt clear processing we can get most interrupt signals from the touch.
But it fails to pass the multiple touches (two fingers zoom in/out) most time.
In the failing case we can see from the oscilloscope the interrupt line in uh928 side gets pulling down but the interrupt line in uh927 side keeps high. It seems two sides out of sync for the interrupt signal or we miss some configurations to make it work properly. Please help.
Thanks
