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STV223XD Fiches technique(PDF) 44 Page - STMicroelectronics

No de pièce STV223XD
Description  I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  76 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV223XD Fiches technique(HTML) 44 Page - STMicroelectronics

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STV223XD/224XC - I²C BUS SELECTION
44/76
TUNER DELAY
SIF FEATURES AND AUDIO SWITCHES
Reg.
Addr.
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
03
Tuner AGC Starting
Point Adjustment
6X
X
X
X
X
X
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
Min. Start point 2 mVRMS at PIF input.
Typ. Start point 12 mVRMS at PIF input.
Max. Start point 80 mVRMS at PIF input
Tuner AGC Gain
20
0
1
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
50 µA/dB.
95 µA/dB.
170 µA/dB.
270 µA/dB.
Reg.
Addr
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
04
Main Audio Output
2X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
0
1
X
FM/AM audio selected.
External audio selected.
MUTE selected.
FM De-emphasis
Switch and FM de-
viation range con-
trol
2X
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
X
X
X
X
Automatic control, according to sound standard.
Deemphasis at 75 µs and FM deviation at
±25 kHz.
Deemphasis at 50 µs and FM deviation at
±50 kHz.
Deemphasis filter bypassed.
FM demodulator
defeat
1X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
0 = FM demodulator active.
1 = FM demodulator defeat, FM out muted.
AM/FM output se-
lection
1X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
0 = FM output selected.
1 = AM output selected.
QSS and AM de-
modulator defeat
1
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = QSS and AM demod active,
1 = QSS and AM demod not active (OFF)
Intercarrier filter
ON/OFF
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = Intercarrier filter ON
1 = Intercarrier filter OFF
05
Volume Control
Attenuation,
Linear curve (dB)
10
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Attenuation = 0 dB.
Attenuation = 78 dB.
7-bit resolution.
Volume Control
Attenuation,
Non-linear curve
(d0 = 0, d7 = 1)
11
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
Attenuation = 0 dB.
Attenuation = 78 dB.
6-bit resolution.
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
X
X
X
X
X
X
X



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