QSPI setting problem

[leonng]

Hi there,

 I want to ask how to set the Tx is low when it isn't in active. TC234 is used.

The output:

The goal:

Thank you!

Best Regards,

Leon

[cwunder · Accepted solution]

As far as I remember the MTSR pin will continue to output the last bit value sent from the shift register. If your last bit of data that is being transmitted is a '1' then the output will remain high after the frame has finished. If you want the output to be low then you could send a dummy transfer (without a real chip select to an actual device) with the data set to zero to clear the output pin.