AD6620
SERIAL PORT: BUS MASTER
SERIAL PORT: CASCADE MODE
RESET with PAR/SER = “0” establishes Serial Port active.
SBM = “1” puts AD6620 in Serial Bus Master mode SCLK is
output; SDFS is output.
RESET with PAR/SER = “0” establishes Serial Port active.
SBM = “0” puts AD6620 in Serial Port Cascade mode, SCLK
is input; SDFS is input.
tSCLK
CLK
tSCLKH
tSCLKD
SCLK
tSCLK
tSCLKL
tSCLKH
Figure 13. SCLK Timing Requirements
SCLK
tSCLKL
Figure 9. SCLK Switching Characteristics
SCLK
tSSI
tHSI
SCLK
SDI
DATA
Figure 14. Serial Input Data Timing Requirements
tSSI
tHSI
SDI
DATA
tHSRF
Figure 10. Serial Input Data Timing Requirements
SCLK
SDO
I
Q
Q
0
I
14
1
15
tDSF
tDSE
tHSF
tSSF
SDFS
SCLK
tSDFSH
SDFS
SDFE
Figure 15. SDO/SDFS Timing Requirements
tSDFEH
Figure 11. Serial Frame Switching Characteristics
tDSE
tDSO
SCLK
SDO
tDSO
I
Q
Q
0
I
14
1
15
tSDFEH
SCLK
SDO
SDFE
I
I
I
13
15
14
Figure 16. SDO, SDFE Switching Characteristics
Figure 12. Serial Output Data Switching Characteristics
REV. A
–8–
ADI [ ADI ]
