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STV2236 Datasheet(PDF) 49 Page - STMicroelectronics

No. de pieza STV2236
Descripción Electrónicos  I²C bus-controlled multistandard single chip TV processor
PDF  86 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV2236 Datasheet(HTML) 49 Page - STMicroelectronics

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Obsolete
Product(s)
- Obsolete
Product(s)
STV224X, STV228X, STV223X - I²C BUS SELECTION
49/86
6.3.6 Video Controls
06
PIF VCO Compen-
sation
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0 = Optimized for PIF from 33.9 to 38.9 MHz
1 = Optimized for PIF 45.75 & 58.75 MHz
Sound Standard
Selection
2X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
1
0
1
X
X
X
X
6.5 MHz sound selected.
6.0 MHz sound selected.
5.5 MHz sound selected.
4.5 MHz sound selected.
AGC SIF time
constant (AM)
1X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
0 = Auto Time constant.
1 = Fast Time constant forced.
SAW filter switch
output
1X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
0 = output low (0.4 V Max.).
1 = output high (4 V Min.).
CVBS output
(from PIF circuit)
1
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
0 = CVBS output enable.
1 = CVBS output muted.
QSS/Inter-carrier
Application
1
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = QSS application, intercarrier filter OFF
1 = Intercarrier application
Not to be used
1
0
XXXXXXX
Reg.
Addr
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
Reg.
Addr
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
07
Contrast Control
6X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
-24 dB gain (Min. contrast).
0 dB gain (Max. contrast).
RGB Peak
Limitation
1X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
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
Blue Screen
Feature
10
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = Blue screen OFF.
1 = Blue screen ON.
08
Saturation Control
6X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
-40 dB gain (Min. saturation).
+9 dB gain (Max. saturation).
Half Contrast Ena-
ble
1X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = Disabled.
1 = Enabled.
Oversize Blanking
Enable
10
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = Disabled.
1 = Enabled.
09
Brightness Control
6X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
-30% of B/W at Max. contrast.
+30% of B/W at Max. contrast.
RGB Blanking
1X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = Not active (normal operation).
1 = Active.
Cut-off Blanking
10
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = Enable: RGB output blanked when ICATH voltage
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.



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