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USB Superspeed Peripherals

Anonymous
Not applicable

Dear Cypress,

   

I set the GPIO in toggle mode and insert toggle action in two states which are continuously accessed in the state machine to and fro. 

   

But the result still can't solve my problem.  

   

In the picture below, I make a contrast of simulation and my design (Red part). 

   

Can GPIF-II set output GPIO as fast as Clock pulse? Because I need to design DDR signal.

   

Thanks!!

   

Liao

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1 Solution
KandlaguntaR_36
Moderator
Moderator

Liao,

It is not possible to toggle a GPIO as fast as PCLK.

The maximum you can get is half of PCLK Speed.

Say PCLK = 100 MHz, GPIO Freq = 50 MHz

You can see the results using the Scope instead of simulation.

Regards,

Sridhar

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1 Reply
KandlaguntaR_36
Moderator
Moderator

Liao,

It is not possible to toggle a GPIO as fast as PCLK.

The maximum you can get is half of PCLK Speed.

Say PCLK = 100 MHz, GPIO Freq = 50 MHz

You can see the results using the Scope instead of simulation.

Regards,

Sridhar

View solution in original post

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