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STV2238H Scheda tecnica(PDF) 47 Page - STMicroelectronics

Il numero della parte STV2238H
Spiegazioni elettronici  I짼C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  86 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV2238H Scheda tecnica(HTML) 47 Page - STMicroelectronics

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STV224XH/228XH/223XH - I²C BUS SELECTION
47/86
6.3 INPUT SIGNALS (WRITE MODE)
Not used data bits must be set to “0”.
6.3.1 PIFVCO Free Running
6.3.2 PIF Free Running Coarse
6.3.3 PIF Features
Reg.
Addr.
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
00
PIFVCO
Free Running
Fine Adjustment
70
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
X
X
X
PIF Typical + 0.7 MHz.
PIF Free Running mid range.
PIF Typical - 0.7 MHz.
Not to be used
1
X
X
XXXX
X
0
Reg.
Addr.
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
01
PIFVCO Free
Running Coarse
Adjustment for
38.9 MHz Carrier
4
X
X
X
X
X
X
0
0
0
X
X
X
0
0
1
0
1
1
0
1
1
0
1
1
PIFVCO = F0 + 2.0 MHz.
PIFVCO = F0 (mid range).
PIFVCO = F0 - 1.8 MHz.
PIFVCO Free
Running Coarse
Adjustment for
33.9 MHz Carrier
(L’)
4
X
X
X
X
X
X
1
1
1
1
1
1
0
0
1
0
1
1
0
1
1
0
1
1
PIFVCO = F0 + 1.3 MHz.
PIFVCO = F0 (mid range).
PIFVCO = F0 - 1.2 MHz.
PIF Modulation
1X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
0 = Negative Modulation.
1 = Positive Modulation.
L/L’ Standard
Selection
1X
X
X
X
0
1
1
1
X
X
X
X
X
X
X
X
0 = L Standard.
1 = L’ Standard.
Digital AFC Defeat
1X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = AFC Active.
1 = AFC Defeat (read register 02, d2 d1 d0 = 000).
PIF
Over-modulation
10
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = Over-modulation detection off.
1 = Over-modulation regulation active.
Reg.
Addr.
(Hex)
Description
Bits
Data
Comments
d7 d6 d5 d4 d3 d2 d1 d0
02
CVBS Output Ampli-
tude
5X
X
X
X
X
X
X
X
X
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
VTyp. - 1.6 dB.
VTyp. = 1.6 V (black / white).
VTyp.+ 1.5 dB.
Not to be used
1
X
X
0
X
X
X
X
X
Overmodulation
Reset
1X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0 = Normal Operating Mode
1 = Overmodulation Reset
CVBS Output
10
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 = 2 VPP, no external sound trap.
1 = 2.3 VPP, external sound trap.



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