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STV2236 数据表(PDF) 48 Page - STMicroelectronics

部件名 STV2236
功能描述  I짼C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  86 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV2236 数据表(HTML) 48 Page - STMicroelectronics

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STV224XH/228XH/223XH - I²C BUS SELECTION
48/86
6.3.4 Tuner Delay
6.3.5 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
2
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
X
X
X
X
Automatic control, according to sound standard.
De-emphasis at 75 µs and FM deviation at
±25 kHz.
De-emphasis at 50 µs and FM deviation at
±50 kHz.
Audio FM Wide mode &50 µs De-emphasis (BGDKI).
To be used with 224xH version only in QSS architec-
ture.
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 and FM demod OFF.
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)
70
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)
61
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
Attenuation = 0 dB.
Attenuation = 78 dB.
6-bit resolution.



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