Datasheet

Data Sheet AD9558
Rev. B | Page 51 of 104
CS
SCLK
DON'T CARE
SDIO
A12W0W1R/W A11
A10 A9
A8
A7 A6
A5
A4 A3
A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2
D1
D0
DON'T CARE
DON'T CARE
DON'T CARE
16-BIT INSTRUCTION HEADER REGISTER (N) DATA REGISTER (N – 1) DATA
09758-029
Figure 46. Serial Control Port Write—MSB First, 16-Bit Instruction, Two Bytes of Data
CS
SCLK
SDIO
SDO
REGISTER (N) DATA
16-BIT INSTRUCTION HEADER REGISTER (N – 1) DATA
REGISTER (N – 2) DATA
REGISTER (N – 3) DATA
A12W0W1R/W
A11
A10
A9
A8
A7
A6
A5
A4
A3 A2 A1 A0
DON'T CARE
DON'T CARE
DON'T CARE
DON'T
CARE
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
09758-030
Figure 47. Serial Control Port Read—MSB First, 16-Bit Instruction, Four Bytes of Data
t
S
DON'T CARE
DON'T CARE
W1 W0 A12 A11 A10 A9 A8 A7 A6
A5 D4 D3 D2 D1 D0
DON'T CARE
DON'T CARE
R/W
t
DS
t
DH
t
HIGH
t
LOW
t
CLK
t
C
CS
SCLK
SDIO
09758-031
Figure 48. Serial Control Port Write—MSB First, 16-Bit Instruction, Timing Measurements
DATA BIT
N – 1DATA BIT N
CS
SCLK
SDIO
SDO
t
DV
09758-032
Figure 49. Timing Diagram for Serial Control Port Register Read
CS
SCLK
DON'T CARE
DON'T CARE
16-BIT INSTRUCTION HEADER REGISTER (N) DATA REGISTER (N + 1) DATA
SDIO
DON'T CARE
DON'T CARE
A0
A1 A2 A3
A4 A5
A6
A7 A8 A9
A10 A11
A12
D1D0R/WW1W0
D2
D3 D4
D5 D6
D7 D0
D1 D2
D3
D4 D5
D6 D7
09758-033
Figure 50. Serial Control Port Write—LSB First, 16-Bit Instruction, Two Bytes of Data