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ADS8699: SRC Internal Clock problem

Part Number: ADS8699

Dear Specialists,

I want to use the ADS8699 as SPI master, and MCU SPI as slave. From the datasheet, I found ADS8699 RVS pin can send clock as SPI clk signal, and RVS is from internal clock (Figure 6-8).

My question is:

After the CS is pulled low, the RVS pin can output clock that is synchronous with the output data. If CS keeps low, how many clock number the RVS pin can output ? 

Because output data is 32 bit, the RVS clock number is 32, is that correct ? Or the RVS clock output until the CS is pulled High ?

Thank you.

Lilong