AD9054ASLASHPCB datasheet(6/19 Pages) AD

6 / 19 page

AD9054A

–6–

REV. B

AIN

ENCODE

PORT A

D7–D0

PORT B

D7–D0

DATA N–7

OR N–8

DATA N–7

OR N–6

INVALID IF OUT OF SYNC

DATA N–4 IF IN SYNC

DATA N–2

DATA N

DATA N–8

OR N–7

DATA N–6

OR N–7

INVALID IF OUT OF SYNC

DATA N–5 IF IN SYNC

DATA N–3

DATA N–1

DATA N+1

SAMPLE N+6

SAMPLE N+2

SAMPLE N+1

SAMPLE N–2

SAMPLE N–1

SAMPLE N

SAMPLE N+3

SAMPLE N+4

SAMPLE N+5

tPD

tPWDS

tSDS

tHDS

tSDS

tHDS

tEH

tEL

1/fS

Figure 2a. Timing—Dual Channel Mode (One-Shot Data Sync)

AIN

ENCODE

PORT A

D7–D0

PORT B

D7–D0

DATA N–7

OR N–8

DATA N–7

OR N–6

INVALID IF OUT OF SYNC

DATA N–4 IF IN SYNC

DATA N–2

DATA N

DATA N–8

OR N–7

DATA N–6

OR N–7

INVALID IF OUT OF SYNC

DATA N–5 IF IN SYNC

DATA N–3

DATA N–1

DATA N+1

SAMPLE N+6

SAMPLE N+2

SAMPLE N+1

SAMPLE N–2

SAMPLE N–1

SAMPLE N

SAMPLE N+3

SAMPLE N+4

SAMPLE N+5

tPD

tHDS

tSDS

tHDS

tEH

tEL

1/fS

tSDS

tPWDS

Figure 2b. Timing—Dual Channel Mode (Continuous Data Sync)

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