The ADC includes a small internal capture memory buffer which can store up to 64 samples. Once a strobe is given to the memory using SPI register write, the memory will store the next continuous 64 samples of one ADC channel (selected via SPI register write) and stop. The samples are captured from the ADC cores (prior to averaging or decimation). These samples can be read back using the SPI interface without involving the JESD204B interface at all.

This mode allows debug of the analog front end during the initial bring-up phase even if the JESD204B interface is not operational yet.