ADS1230
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SBAS366–OCTOBER 2006
SUMMARY OF SERIAL INTERFACE WAVEFORMS
Data
a) 20 Bits of Data Retrieval
Data Ready
New Data Ready
MSB
19
LSB
0
DRDY/DOUT
18
17
tPD
tHT
tDS
tSCLK
tUPDATE
1
20
SCLK
tSCLK
tCONV
Data
b) 24 Bits of Data Retrieval
Data Ready
New Data Ready
MSB
19
LSB
0
3
DRDY/DOUT
18
17
1
2
4
tPD
tHT
tDS
tSCLK
tUPDATE
1
20
21
22
23
24
SCLK
tSCLK
tCONV
c) Data Retrieval with DRDY/DOUT Forced High Afterwards
Data
Data Ready
New Data Ready
DRDY/DOUT
SCLK
19
18
17
0
1
20
21
21st SCLK to Force DRDY/DOUT High
d) Standby Mode/Single Conversions
Data Ready
Standby Mode
DRDY/DOUT
SCLK
19
18
17
0
19
Start Conversion
1
20
tDSS
tSTANDBY
tS_RDY
Figure 32. Summary of Data Retrieval Waveforms
21
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