QSPI setting problem

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leonng
Level 3
Level 3
First like received First like given 10 questions asked

Hi there,

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

The output:

WhatsApp Image 2023-02-03 at 09.57.05.jpeg

The goal:

WhatsApp Image 2023-02-03 at 09.57.03.jpeg

Thank you!

Best Regards,

Leon

1 Solution
cwunder
Employee
Employee
5 likes given 50 likes received 50 solutions authored

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. 

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1 Reply
cwunder
Employee
Employee
5 likes given 50 likes received 50 solutions authored

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.