SI3211 ETC, SI3211 Datasheet - Page 45

• Manufacturer Part Number: SI3211
• Description: PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
• Manufacturer: ETC

N ote: During chip select byte, SD ITHR U = SD I delayed by one SC LK. Each device daisy-chained looks at the
SC LK
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
C hip Select Byte
SD O
SD I
C S
Figure 26. SPI Daisy Chain Mode
Preliminary Rev. 1.11
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
Si3210/Si3211/Si3212
CS
SDO
CS
SDO
C S
C S
SDO
SDO
SD ITHR U
SD ITHR U
SD ITH RU
SD ITH RU
SD I
SD I
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
45