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.
t
SCLK
CLK
t
SCLKH
t
SCLKD
SCLK
t
SCLK
t
SCLKH
t
SCLKL
Figure 13. SCLK Timing Requirements
SCLK
t
SCLKL
SCLK
Figure 9. SCLK Switching Characteristics
t
SSI
t
HSI
SCLK
SDI
DATA
t
SSI
t
HSI
Figure 14. Serial Input Data Timing Requirements
SDI
DATA
SCLK
Figure 10. Serial Input Data Timing Requirements
t
SSF
t
HSF
t
DSF
SCLK
t
DSE
SDFS
Figure 15. SDFS Timing Requirements
t
SDFSH
SDFS
t
SDFEH
SDFE
SCLK
t
DSO
t
DSE
Figure 11. Serial Frame Switching Characteristics
SDO
I
15
I
14
Q
1
Q
0
t
DSO
t
SDFEH
SDFE
SCLK
Figure 16. SDO, SDFE Switching Characteristics
SDO
I
15
I
14
I
13
Figure 12. Serial Output Data Switching Characteristics
–8–
REV. 0
AD [ ANALOG DEVICES ]
