si3201 Silicon Laboratories, si3201 Datasheet - Page 39

• Manufacturer Part Number: si3201
• Description: Proslic Programmable Cmos Slic With Ringing/battery Voltage Generation
• Manufacturer: Silicon Laboratories

Note: During chip select byte, SDITHRU = SDI delayed by one SCLK. Each device daisy-chained looks at the
SCLK
SDI0
SDI1
SDI2
SDI3
LSB of the chip select byte for its chip select.
C7 C6 C5 C4 C3 C2 C1 C0
– – C7 C6 C5 C4 C3 C2
– C7 C6 C5 C4 C3 C2 C1
– – – C7 C6 C5 C4 C3
CPU
Chip Select Byte
SDO
SDI
CS
Figure 19. SPI Daisy Chain Mode
Preliminary Rev. 0.96
R/W
R/W
R/W
R/W
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
Address Byte
CS
SDO
CS
SDO
CS
CS
SDO
SDO
SDITHRU
SDITHRU
SDITHRU
SDITHRU
SDI
SDI
SDI
SDI
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
SDI0
SDI1
SDI2
SDI3
Data Byte
Si3230
39