I am trying to interface an stm32f412 with a Texas instruments ADS7953 in the auto 2 mode. I am using the TI mode and using the HAL DMA drivers to talk to the ADS7953. However after programming I am not getting the intended result.

[NKoti.1]

As I understand it TI mode consists of high polarity clock, 1st edge phase and nss after every frame. I think the problem I have is the clock is running even with NSS high. This causes the bits to be shifted out of the ADS7953. It will be great if anyone has worked on this before and can share their experience.