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ADS125H01: ADS125H01 cannot read and write registers whose addresses exceed 10H, even if CS2(low active) has been pulled down.

Part Number: ADS125H01

ADS125H01 cannot read and write registers whose addresses exceed 10H, even if CS2(low active) has been pulled down.

Figure 1 below is the write register function (WREG Command), and Figure 2 is the SPI read-write array for single-step debugging. 

The written data is 55 53 65 00, the theoretically received data is FF 55 53 65, but the actually received data is FF 00 00 00, indicating that the write failed.

Similar problems occurs in read register data Command.