SAA7118 Datasheet, PDF (23/169 Pages) NXP Semiconductors – Multistandard video decoder with adaptive comb filter and component video input

Philips Semiconductors
Multistandard video decoder with adaptive
comb filter and component video input
Preliminary specification
SAA7118
ANALOG INPUT
ADC
NO BLANKING ACTIVE
1
0
VBLK
<- CLAMP
1
0
HCL
GAIN ->
1
0
HSY
1
0
CLL
0
1
SBOT
1
0
WIPE
+ CLAMP
− CLAMP NO CLAMP + GAIN
− GAIN fast − GAIN
WIPE = white peak level (510).
SBOT = sync bottom level (1).
CLL = clamp level [120 for CVBS, Y(C), S; 256 for C(Y), P_B-P_R; 32 for RGB, Y].
HSY = horizontal sync pulse.
HCL = horizontal clamp pulse.
Fig.10 Clamp and gain flow chart.
slow + GAIN
MGC647
2001 May 30
23