Cmd Register: 0x0000_0000


31	30								12	11	10	9	8	7							0
Read Invalid	Reserved									SS	Reserved	RD	WR	data


Bits	Field	Description	Privilege
0-7	data	Data field that stores data that is transmitted or received, or chip select ID. For chip-select enablement, you should write 1'b1 to bit[7].	Read/Write
8	WR	Write 1'b1 to trigger a SPI write command. Data in the data field of this register will be transmitted.	Write
9	RD	Write 1'b1 to trigger a SPI read command. The read data will be stored in the data field of this register after the SPI read command is processed.	Write
10	Reserved	Reserved.	N/A
11	SS	Write 1'b1 to indicate the operation is for chip-select enablement.	Write
12-30	Reserved	Reserved.	N/A
31	Read invalid	Indicates whether the read data in the data field is invalid. 1: Read data is invalid 0: Read data is valid	Read