Datasheet

ADAS3023 Data Sheet
Timing Diagrams
Figure 4. General Timing Diagram with BUSY/SDO2 Disabled
Figure 5. General Timing Diagram with BUSY/SDO2 Enabled
1 16 1 16 1 16 1 16 1 16 1 16
PHASE
CNV
SCK
DIN
SDO
BUSY/
SDO2
CS
SOC SOC
EOC
NOTE 2NOTE 1
NOTE 4
NOTE 3
NOTE 2
NOTE 1
EOC
POWER
UP
t
CONV
t
CYC
t
CNVH
t
CBD
t
AD
CONVERSION (n) CONVERSION (n + 1)ACQUISITION (n + 1) ACQUISITION (n + 2)
SOC
DATA (n)
CFG (n + 2) CFG (n + 3)
CH0 CH1 CH7 CH0 CH1 CH7
DATA (n + 1)
10942-004
NOTES
1. DATA ACCESS CAN ONLY OCCUR AFTER CONVERSION. BOTH CONVERSION RESULT AND THE CFG REGISTER ARE UPDATED AT THE END OF THE CONVERSION (EOC).
2. A TOTAL OF 16 SCK FALLING EDGES ARE REQUIRED FOR CONVERSION RESULT. AN ADDITIONAL 16 EDGES AFTER THE LAST CONVERSION RESULT ON BUSY READS BACK THE CFG ASSOCIATED
WITH CONVERSION.
3. CS CAN BE HELD LOW OR CONNECTED TO CNV. CS IS SHOWN WITH FULL INDEPENDENT CONTROL.
4. FOR OPTIMAL PERFORMANCE, DATA ACCESS SHOULD NOT OCCUR DURING THE SAMPLING INSTANT. A MINIMUM TIME OF AT LEAST THE APERATURE DELAY,
t
AD
, SHOULD LAPSE PRIOR TO DATA ACCESS.
1 16
PHASE
CNV
SCK
DIN
SDO
BUSY/
SDO2
CS
SOC SOC
EOC
NOTE 1
NOTE 4
NOTE 3
NOTE 2
NOTE 1
EOC
POWER
UP
t
CONV
t
CYC
t
CNVH
t
AD
CONVERSION (n) CONVERSION (n + 1)ACQUISITION (n + 1) ACQUISITION (n + 2)
SOC
DATA (n)
CFG (n + 2) CFG (n + 3)
DATA (n + 1)
CH0
CH4
CH1
CH5
CH2
CH6
CH3
CH7
CH0
CH4
CH1
CH5
CH2
CH6
CH3
CH7
1 16 1 16
1 16 1 16 1 16
1 16
1 16
10942-005
NOTES
1. DATA ACCESS CAN ONLY OCCUR AFTER CONVERSION. BOTH CONVERSION RESULT AND THE CFG REGISTER ARE UPDATED AT THE END OF THE CONVERSION (EOC).
2. A TOTAL OF 16 SCK FALLING EDGES ARE REQUIRED FOR CONVERSION RESULT. AN ADDITIONAL 16 EDGES AFTER THE LAST CONVERSION RESULT ON BUSY READS BACK THE CFG ASSOCIATED
WITH CONVERSION.
3. CS CAN BE HELD LOW OR CONNECTED TO CNV. CS IS SHOWN WITH FULL INDEPENDENT CONTROL.
4. FOR OPTIMAL PERFORMANCE, DATA ACCESS SHOULD NOT OCCUR DURING THE SAMPLING INSTANT. A MINIMUM TIME OF AT LEAST THE APERATURE DELAY,
t
AD
, SHOULD LAPSE PRIOR TO DATA ACCESS.
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