AnsweredAssumed Answered

iMX6SL SSI Interface problem

Question asked by changyonglee on Feb 12, 2017
Latest reply on Feb 13, 2017 by igorpadykov


My custom board used imx6sl MPU.
And It is using SSI Interface between iMX6SL and vocoder(AMBE3000).
- The used ssi pin information is shown below.

using ssi pin information.


SSI interface has problem. Check please.
At TX signal, Frame Sync pin clock is generated differently.

   -- Yello : TXFS pin.

   -- Green : TXC pin.

   -- Blue : TXD pin.

Frame Sync pin clock is generated differently.


I send 32Byte same data. kernel version is 3.14.52. 
First image is normal.
But Second image is different. I marked it with a dotted line.
Frame Sync additional clock was generated. (1clock)


This problem is very important.

What is the cause? Please ask for a review.