Datasheet
AD9959
Rev. B | Page 35 of 44
INSTRUCTION CYCLE
DATA TRANSFER CYCLE
I7
(I0)
SDIO_0
SCLK
CS
I6
(I1)
I5
(I2)
I4
(I3)
I3
(I4)
I2
(I5)
I1
(I6)
I0
(I7)
D7
(D0)
D6
(D1)
D5
(D2)
D4
(D3)
D3
(D4)
D2
(D5)
D1
(D6)
D0
(D7)
05246-028
Figure 46. Single-Bit Serial Mode (2-Wire) Read Timing—Clock Stall High
INSTRUCTION CYCLE
DATA TRANSFER CYCLE
SDIO_0
SCLK
CS
DON'T CARE
SDO
(SDIO_2 PIN)
I7
(I0)
I6
(I1)
I5
(I2)
I4
(I3)
I3
(I4)
I2
(I5)
I1
(I6)
I0
(I7)
05246-029
D7
(D0)
D6
(D1)
D5
(D2)
D4
(D3)
D3
(D4)
D2
(D5)
D1
(D6)
D0
(D7)
Figure 47. Single-Bit Serial Mode (3-Wire) Read Timing—Clock Stall Low
INSTRUCTION CYCLE
DATA TRANSFER CYCLE
SCLK
SDIO_1
SDIO_0
CS
D7
(D1)
D5
(D3)
D3
(D5)
D1
(D7)
D6
(D0)
D4
(D2)
D2
(D4)
D0
(D6)
I6
(I0)
I4
(I2)
I2
(I4)
I0
(I6)
I7
(I1)
I5
(I3)
I3
(I5)
I1
(I7)
05246-030
Figure 48. 2-Bit Serial Mode Read Timing—Clock Stall High
INSTRUCTION CYCLE D
A
T
A
TRANSFER CYCLE
I7
(I3)
I1
(I5)
I5
(I1)
I3
(I7)
I6
(I2)
I0
(I4)
I4
(I0)
I2
(I6)
SCLK
SDIO_0
SDIO_1
SDIO_2
CS
SDIO_3
D7
(D3)
D1
(D5)
D5
(D1)
D3
(D7)
D6
(D2)
D0
(D4)
D4
(D0)
D2
(I6)
05246-031
Figure 49. 4-Bit Serial Mode Read Timing—Clock Stall High