STV2246H STMicroelectronics, STV2246H Datasheet - Page 49

• Manufacturer Part Number: STV2246H
• Manufacturer: STMicroelectronics

Specifications of STV2246H

• Lead Free Status / Rohs Status: Compliant

STV224X, STV228X, STV223X - I²C BUS SELECTION
6.3.6 Video Controls
49/86
(Hex)
(Hex)
Addr
Addr
Reg.
Reg.
06
07
08
09
PIF VCO Compen-
sation
Sound Standard
Selection
AGC SIF time
constant (AM)
SAW filter switch
output
CVBS output
(from PIF circuit)
QSS/Inter-carrier
Application
Not to be used
RGB Peak
Limitation
Blue Screen
Feature
Saturation Control
Half Contrast Ena-
ble
Oversize Blanking
Enable
Brightness Control
RGB Blanking
Cut-off Blanking
Contrast Control
Description
Description
Bits
Bits
1
2
1
1
1
1
1
6
1
1
6
1
1
6
1
1
d7 d6 d5 d4 d3 d2 d1 d0
d7 d6 d5 d4 d3 d2 d1 d0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
Data
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
Data
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
X
X
0
0
1
1
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
1
0 = Optimized for PIF from 33.9 to 38.9 MHz
1 = Optimized for PIF 45.75 & 58.75 MHz
6.5 MHz sound selected.
6.0 MHz sound selected.
5.5 MHz sound selected.
4.5 MHz sound selected.
0 = Auto Time constant.
1 = Fast Time constant forced.
0 = output low (0.4 V Max.).
1 = output high (4 V Min.).
0 = CVBS output enable.
1 = CVBS output muted.
0 = QSS application, intercarrier filter OFF
1 = Intercarrier application
-24 dB gain (Min. contrast).
0 dB gain (Max. contrast).
0 = APR, APR Threshold, tracked with contrast.
1 = RGB Peak Limitation, threshold not tracked with
contrast.
Note: RGB Peak Limitation active when WR10 d0 =
1
0 = Blue screen OFF.
1 = Blue screen ON.
-40 dB gain (Min. saturation).
+9 dB gain (Max. saturation).
0 = Disabled.
1 = Enabled.
0 = Disabled.
1 = Enabled.
-30% of B/W at Max. contrast.
+30% of B/W at Max. contrast.
0 = Not active (normal operation).
1 = Active.
0 = Enable: RGB output blanked when I
is far from internal cut-off reference (cut-off loop not
locked), during IC start-up.
1 = Disable: RGB output not blanked by cut-off loop.
Comments
Comments
CATH
voltage