saa7110 NXP Semiconductors, saa7110 Datasheet - Page 16

• Manufacturer Part Number: saa7110
• Description: One Chip Front-end 1 Ocf1
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1995 Oct 18
handbook, full pagewidth
One Chip Front-end 1 (OCF1)
X = system variable (start with logic 0).
Y = IAGV-FGVI > GUDL.
VBLK = vertical blanking pulse.
HSY = horizontal sync pulse.
SBOT = sync bottom level (adjustable).
WIPE = white peak level (adjustable).
IVAL = integration value gain (adjustable).
WVAL = integration value WIPE (adjustable).
IGAI = integration factor gain (adjustable).
IWIP = integration factor WIPE (adjustable).
AGV = actual gain value.
FGV = frozen gain value.
GUDL = gain update level (adjustable).
WRSE = white peak reset enable.
WIRS = white peak reset select.
L = line.
F = field.
STOP
0
WRSE
no action
0
4/F
1
1
SBOT
*IWIP
WIRS
0
Fig.9 Luminance AGC flow chart.
1
anti-alias amplifier
0
4/L
WIPE
1
analog input
amplifier
ADC8
VBLK
X
gain accumulator (20 bits)
1
IVAL
0
1
AGV
1
0
actual gain value 8-bit (AGV) [ 3/ 6 dB]
1
*IGAI
X
16
SBOT
MSB
LSB
2
X
6
0
IVAL
1
0
gain value 8-bit
1
0
HSY
update
HSY
decoder input
1
WVAL
X
*IWIP
0
1
1
0
Y
WIPE
0
SAA7110; SAA7110A
FGV
MGC828
0
/ 0
Product specification