TLC8044 Datasheet, PDF (26/32 Pages) Texas Instruments – 12-BIT ANALOG-TO-DIGITAL INTERFACE FOR CHARGE-COUPLED DEVICE IMAGE SENSORS FOR SCANNERS

TLC8044
12-BIT ANALOG-TO-DIGITAL INTERFACE FOR
CHARGE-COUPLED DEVICE IMAGE SENSORS FOR SCANNERS
SLAS128 – JUNE 1997
PRINCIPLES OF OPERATION
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
MCLK
VSMP
Video Sample
R, G, B Input Video
n
n+1
n+2
POC11 – POC0
PSC11 – PSC0
ONE
rn – 2
rn – 2
gn – 2
gn – 2
n–2
bn – 2
bn – 2
rn – 1
rn – 1
gn – 1
gn – 1
n–1
bn – 1
bn – 1
OP15 – OP0
CC0
rn – 3
gn – 3
bn – 3
CC1
Pixel Period
MCLK
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
VSMP
Video Sample
R, G, B Input Video
POC11 – POC0
rn
gn
bn
PSC11 – PSC0 ^rn
gn
bn
ONE
n
ÏÏÏÏÏÏÏÏÏÏ OP15–OP0 ^rn–2
gn – 2
bn – 2
rn – 1
gn – 1
bn – 1
rn
gn
bn
CC0
CC1
Figure 15. System Timing – Color Mode
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