CS5378
Instruction
Write
Read
Opcode
0x02
0x03
Address
ADDR[7:0]
ADDR[7:0]
Definition
Write SPI registers beginning at the address in ADDR.
Read SPI registers beginning at the address in ADDR.
Microcontroller Write to SPI Registers
SS:EECS
MISO
0x02 ADDR Data1 Data2
MOSI
Microcontroller Read from SPI Registers
SS:EECS
MISO
0x03 ADDR
MOSI
Data1 Data2
DataN
DataN
Cycle
1
2
3
4
5
6
7
8
SCK
MOSI
MSB 6
5
4
3
2
1
LSB
MISO
MSB
6
5
4
3
2
1
LSB X
SS:EECS
Figure 18. Microcontroller Serial Transactions
DS639F2
31