SPI Unexpected data bits seen

[beginner100]

Using S32K312 EVB as master, I’m sending commands with a register address and certain data configured for the Slave.

A snippet of the CS(yellow), CLK(blue), MOSI(pink), MISO(green) is below.

The MOSI(Pink) in the picture is Reg addr 07h,  Data is 20h (32 dec)

I don’t understand the other pulse when the CS is high, can you let me know what it could be? I just want to confirm if everything looks okay on the scope snippet I sent or if I should be configuring anything on the S32CT.

I have used an SPI example with LPSPI2 as Master.

MISO(green) - no response currently seen from the Slave

[danielmartynek · Accepted solution]

Hi @beginner100,

This is answered in this thread:

https://community.nxp.com/t5/S32K/Unwanted-pulse-on-S32K3-SPI-MOSI-output/td-p/1790479

BR, Daniel