Why SCK discontinuities when the SDK configures DSPI

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Why SCK discontinuities when the SDK configures DSPI

435 Views
张松张
Contributor I

I used the SDK 0.9.0 to configure the DSPI module, but the test found that the SOUT pin of the MPC5744 chip was pulled up after one byte of output, and that the SCK was also discontinuous; when I configured the DSPI, I chose a continuous mode, but the actual SCK waveforms were not continuous. I want to know why.

PS:When DSPIMasterSetDelay (SPI3s) function is not called, the transmission delay time between bytes is 0.56us. after calling the function, the byte transfer delay time is 2.5us.

SCK不连续.png

PCS continuous.png

0 Kudos
0 Replies