SAA7108AE PHILIPS [NXP Semiconductors], SAA7108AE Datasheet - Page 35

• Manufacturer Part Number: SAA7108AE
• Description: HD-CODEC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2004 Jun 29
HD-CODEC
X = system variable.
Y = (IAGV
VBLK = vertical blanking pulse.
HSY = horizontal sync pulse.
AGV = actual gain value.
FGV = frozen gain value.
FGVI) > GUDL.
STOP
NO ACTION
0
1/F
1
4
248
0
1
ANTI-ALIAS FILTER
0
1/L
ANALOG INPUT
1
Fig.16 Gain flow chart.
254
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
35
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
1
1/LLC2
X = 1
DAC
0
SAA7108AE; SAA7109AE
1
0
Y
254
0
FGV
MHB531
/ 0
0
9
Product specification