SUMMARY OF SERIAL INTERFACE WAVEFORMS
DRDY/DOUT
SCLK
23
22
21
0
MSB
LSB
1
24
a. Data Retrieval.
DRDY/DOUT
SCLK
23
22
21
0
1
24
25
b. Data Retrieval with DRDY/DOUT Forced HIGH Afterwards.
Data ready after cal.
DRDY/DOUT
SCLK
23
22
21
0
Begin cal.
26
1
24
25
c. Self-Calibration.
Data ready.
Sleep Mode
23
22
21
0
DRDY/DOUT
SCLK
Wakeup and
start conversion.
1
24
d. Sleep Mode/Single Conversions.
Data ready after
wakeup and cal.
Sleep Mode
DRDY/DOUT
SCLK
23
22
21
0
Wakeup and
begin cal.
1
24
25
e. Sleep Mode/Single Conversions with Self-Calibration on Wakeup.
FIGURE 20. Summary of Serial Interface Waveforms.
ADS1244
16
SBAS273
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