How to improve the GPIO Frequency?

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
chca_2098406
Level 1
Level 1
First question asked First reply posted

Dear all,

   

Now I want to use two gpios(as clock and data) to transfer a Bit-Stream.

   

I tested the gpio clock frequency is 1.7MHz with using write register mode to config it. But when I transfer the data using the clock, the gpio frequency will be reduced to 1.1MHz.

   

It is too slow for me. I need the gpio frequency as high as possible.

   

Does anyone have a good idea?

   

Thanks

   

chad

0 Likes
2 Replies
RoBO_1287886
Level 4
Level 4
First solution authored 25 replies posted 10 replies posted

Hello,

   

For your project, the SPI is a available or not?

   

The SPI allows a faster CLK signal than 1.7MHz however it depends of your design.

   

 

   

Could you give us more details about yours requirements and limits?

   

yours,

   

Rob1

0 Likes

Dear Rob1,

   

My SPI has been used for a spi flash, and my FPGA need to work at slave serial mode. So we want to use GPIO to connect with FPGA.

   

When we transfer a bit-stream to the FPGA, we find the speed is too slow. 

   

Best Regards,

   

chad

0 Likes