We use KL17 SPI interface with SLRC61002HN for the register check. Found that the SPI read is functional, For example,
Read 46h --> Response with 6eh , it matches the external IFSEL1="hi", IFSEL0="lo"
But no matter what command we write, the register seems not functional. For example,
Read 03h --> Response with 05h, then Write 03h 1fh --> Read 03h again, the result is still 05h, not 1fh we expect.
Is any command step we have to follow?