ADAS3022

Data Sheet

Rev. A | Page 8 of 40

ACQUISITION (n)

UNDEFINED

PHASE

POWER

UP

CONVERSION (n – 1)

UNDEFINED

CNV

BUSY

DIN

CS

SDO

NOTES

1. DATA ACCESS CAN OCCUR DURING A CONVERSION (

THE CONVERSION RESULT AND THE CFG REGISTER ARE UPDATED AT THE END OF A CONVERSION (EOC).

2. DATA ACCESS CAN ALSO OCCUR UP TO

TIME CAN BE USED TO ACQUIRE DATA.

3. A TOTAL OF 16 SCK FALLING EDGES IS REQUIRED FOR A CONVERSION RESULT. AN ADDITIONAL 16 EDGES ARE REQUIRED TO

READ BACK THE CFG RESULT ASSOCIATED WITH THE CURRENT CONVERSION.

4. CS CAN BE HELD LOW OR CONNECTED TO CNV. CS WITH FULL INDEPENDENT CONTROL IS SHOWN IN THIS FIGURE.

5. FOR OPTIMAL PERFORMANCE, DATA ACCESS SHOULD NOT OCCUR DURING THE SAMPLING EDGE. A MINIMUM TIME

OF THE APERTURE DELAY (

DATA

INVALID

SCK

1

1

1

16/32

16

16

X

16

NOTE 3

NOTE 1

NOTE 2

NOTE 2

NOTE 1

NOTE 4

NOTE 5

CFG

INVALID

CFG (n + 2)

DATA (n – 1)

INVALID

ACQUISITION (n + 1)

UNDEFINED

CONVERSION (n)

UNDEFINED

DATA (n – 1)

INVALID

CFG (n + 2)

CFG (n + 3)

DATA (n)

INVALID

ACQUISITION

(n + 2)

CONVERSION (n + 1)

UNDEFINED

DATA (n)

INVALID

CFG (n + 3)

CFG (n + 4)

DATA (n + 1)

INVALID

ACQUISITION

(n + 3)

PHASE

CONVERSION

(n + 2)

CNV

BUSY

DIN

CS

SDO

DATA (n + 1)

INVALID

SCK

1

1

CFG (n + 4)

CFG (n + 5)

DATA (n + 2)

ACQUISITION

(n + 4)

CONVERSION

(n + 3)

DATA (n + 2)

CFG (n + 5)

CFG (n + 6)

DATA (n + 3)

CONVERSION

(n + 4)

DATA (n + 3)

CFG (n + 6)

EOC

EOC

EOC

EOC

EOC

SOC

SOC

Figure 4. General Timing Diagram