saa7118 NXP Semiconductors, saa7118 Datasheet - Page 19
saa7118
Manufacturer Part Number
saa7118
Description
Multistandard Video Decoder With Adaptive Comb Filter And Component Video Input
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7118.pdf
(170 pages)
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Philips Semiconductors
9397 750 15219
Product data sheet
Fig 9. Gain flow chart
X = system variable
Y = AGV
GUDL = gain update level (adjustable)
VBLK = vertical blanking pulse
HSY = horizontal sync pulse
AGV = actual gain value
FGV = frozen gain value
STOP
NO ACTION
FGV > GUDL
Rev. 06 — 22 December 2005
0
1/F
1
4
496
0
Multistandard video decoder with adaptive comb filter
1
ANTI-ALIAS FILTER
0
1/L
ANALOG INPUT
1
510
AMPLIFIER
GAIN ACCUMULATOR (18 BITS)
VBLK
X = 0
ADC
1/LLC2
1
1
ACTUAL GAIN VALUE 9-BIT (AGV) [ 3/ 6 dB ]
AGV
HOLDG
1
0
1
1
9
1
X
gain
0
1
GAIN VALUE 9-BIT
1/LLC2
X
0
1
0
UPDATE
HSY
LUMA/CHROMA DECODER
0
HSY
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
1
1/LLC2
X = 1
DAC
0
1
0
Y
510
0
SAA7118
FGV
mhb728
/ 0
0
9
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