AD9857 Analog Devices, AD9857 Datasheet - Page 19

• Manufacturer Part Number: AD9857
• Description: CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
• Manufacturer: Analog Devices

Figures 27–30 are useful in understanding the general
operation of the AD9857 Serial Port.
SCLK
SCLK
SCLK
SCLK
SDIO
SDIO
SDIO
SDIO
SDO
CS
CS
CS
CS
I
I
7
7
I
7
I
7
I
I
6
6
I
6
I
6
INSTRUCTION CYCLE
INSTRUCTION CYCLE
INSTRUCTION CYCLE
INSTRUCTION CYCLE
I
I
5
5
I
5
I
5
I
I
4
4
I
4
I
4
I
I
3
3
I
3
I
3
I
I
2
2
I
2
I
2
I
I
1
1
I
1
I
1
I
I
0
I
0
0
I
0
D
D
O7
D
7
7
D
O7
D
D
6
O6
D
D
6
O6
D
D
DATA TRANSFER CYCLE
DATA TRANSFER CYCLE
DATA TRANSFER CYCLE
DON'T CARE
DATA TRANSFER CYCLE
5
O5
D
D
5
O5
D
D
4
O4
D
D
4
O4
D
D
3
O3
D
D
3
O3
D
D
2
O2
D
D
2
O2
D
D
1
O1
D
D
1
O1
D
0
D
D
O0
D
O0
0
AD9857