Cirrus Logic CS5378 - Manual (Page 31)

CS5378
DS639F3 31
SCK
MOSI
Figure 18. Microcontroller Serial Transactions
SS:EECS
MSB LSB
MISO X
6 1 2 3 4 5
MSB LSB 6 1 2 3 4 5
1 8 2 7 6 5 4 3 Cycle
MISO 0x02 ADDR Data1
MOSI
MISO
MOSI
Microcontroller Write to SPI Registers
Microcontroller Read from SPI Registers
DataN Data2
SS:EECS
SS:EECS
0x03 ADDR
Data1 DataN Data2
Instruction Opcode Address Definition
Write 0x02 ADDR[7:0] Write SPI registers beginning at the address in ADDR.
Read 0x03 ADDR[7:0] Read SPI registers beginning at the address in ADDR.