AnsweredAssumed Answered

SPI not working at speeds more than 10Mhz

Question asked by vijesh reddy on Jul 25, 2017
Latest reply on Jul 25, 2017 by vijesh reddy

I am using PHYCORE iMX6 module. I am interfacing FPGA via SPI.  I am able to communicate with FPGA with speeds upto 10Mhz. If I increase the SPI clock more than 10Mhz, the SCLK is getting distorted and the communication with FPGA is failing.  I have a pull up resistor of 3.3K on SCLK and FPGA hardware looks fine.

 

SCLK waveform is slowly distorting from square to triangular as i increase the speed beyond 10Mhz. Do I need to configure any clocks in iMX6?

Outcomes