SAA7113 Philips Semiconductors, SAA7113 Datasheet - Page 12

• Manufacturer Part Number: SAA7113
• Description: 9-bit video input processor
• Manufacturer: Philips Semiconductors

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