Philips Semiconductors
Product specification
9-bit video input processor
SAA7113H
handbook, full pagewidth
ANALOG INPUT
AMPLIFIER
ANTI-ALIAS FILTER
ADC
9
LUMA/CHROMA DECODER
gain
DAC
9
NO ACTION
1
VBLK
1
0
0
HOLDG
1
X
1
0
0
HSY
0
1
>254
1
1
0
1
0
0
<4
<1
>254
X=0
1
>248
0
X=1
+1/F
STOP
+1/L
−1/LLC2
+1/LLC2
−1/LLC2
+/−
0
GAIN ACCUMULATOR (18 BITS)
ACTUAL GAIN VALUE 9-BIT (AGV) [−6/+6 dB]
1
0
X
1
HSY
1
0
0
Y
AGV
UPDATE
GAIN VALUE 9-BIT
FGV
MHB327
X = system variable; Y = (IAGV
−
FGVI) > GUDL; VBLK = vertical blanking pulse;
HSY = horizontal sync pulse; AGV = actual gain value; FGV = frozen gain value.
Fig.7 Gain flow chart.
1999 Jul 01
12