S32K1XX LPSPI transfer frame

[yuegao1996]

Hi,

   I am a bit fuzzy about TCR[CONTC] of LPSPI. 

  1.when lpspi is busy and CONTC bit is cleared, current transfer will be terminated. Is that to say the PCS signal is negated and restart a new tranfer?

  2. when CONTC bit is set, it won't affect PCS， and continue the transfer from next  frame?

  3. does the word "a transfer" refer to several frames when the PCS keeps asserted?

thanks very much for ur patience!

BR,

yuri

[danielmartynek · Accepted solution]

Hi Yuri,

1. Yes, if the Command FIFO is written with CONTC = 0, it does not change the command of the ongoing continuous transfer and the transfer is terminated.

2. Yes, if the Command FIFO is written with CONTC = 1, it changes the commands without terminating the ongoing continuous transfer.

3. In this case, it is a continuous transfer.

BR, Daniel