STV2247H 查看數據表（PDF） - STMicroelectronics
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STV2247H Datasheet PDF : 86 Pages
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STV224XH/228XH/223XH - I²C BUS SELECTION
Reg.
Addr
(Hex)
Description
Data
Bits
d7 d6 d5 d4 d3 d2 d1 d0
Comments
10 APR Enable
0 = APR disable.
1 X X X X X X X 0 1 = APR enable.
X X X X X X X 1 Note: WR10 d0 to be set to 1 when RGB peak limi-
tation is used
APR Threshold
4 X X X 0 0 0 0 X 50 IRE.
X X X 1 1 1 1 X 100 IRE.
RGB OSD Con-
trast Selection
1 X X 0 X X X X X 0 = Contrast control disable.
X X 1 X X X X X 1 = Contrast control enable.
CRT/LCD Display 1 X 0 X X X X X X 0 = RGB output blanking active, CRT Display
X 1 X X X X X X 1 = RGB output blanking replaced by black level,
LCD Display
White Insertion
1 0 X X X X X X X White Insertion controlled by WR0Fd7
1 X X X X X X X White forced at RGB Output
6.3.7 Chroma Controls
Reg.
Addr.
(Hex)
Description
Data
Bits
d7 d6 d5 d4 d3 d2 d1 d0
Comments
11 Bell Filter Adjust
5 X X X 0 0 0 0 0 0 kHz.
X X X 1 1 1 1 1 +100 kHz.
PAL/NTSC
1 X X 0 X X X X X 0 = 0 dB gain (nominal).
Demodulation Gain
X X 1 X X X X X 1 = +6 dB gain.
NTSC Matrix
1
X 0 X X X X X X 0 = 90° matrix selection.
X 1 X X X X X X 1 = 104° matrix selection (in NTSC only).
ACC Overload Disable 1
0 X X X X X X X 0 = ACC overload active.
1 X X X X X X X 1 = ACC overload disable.
12 Bandpass adjust
4 X X X X 0 0 0 0 f = fosc.
X X X X 1 1 1 1 f = 1.1*fosc.
Chroma reference out- 1 X X X 0 X X X X 0 = Chroma reference output OFF.
put
X X X 1 X X X X 1 = Chroma reference output ON.
Chroma DL selection
1 X X 0 X X X X X 0 = ON.
X X 1 X X X X X 1 = OFF.
Not to be used
2 0 0XXXXXX
Crystal Selection
2 X X X X X 0 0 X XTAL1 (4.43/3.5XX MHz).
X X X X X 0 1 X XTAL2 (3.5XX MHz).
X X X X X 1 0 X XTAL3 (3.5XX MHz).
X X X X X 1 1 X Not allowed.
2 X X X 0 0 X X X PAL.
X X X 0 1 X X X NTSC.
Standard Selection
13
X X X 1 0 0 0 0 SECAM (only with XTAL1).
X X X 1 0 0 1 X Not allowed.
X X X 1 0 1 0 X Not allowed.
X X X 1 1 X X X AUTO mode.
X X X X X 1 1 X Not allowed
Crystal Inhibition
2 X X 0 X X X X 0 Two-crystal, P/S/N application.
X X 0 X X X X 1 Three-crystal, P/N application.
X X 1 X X X X 0 One-crystal, P/S/N 4.43 MHz application.
X X 1 X X X X 1 Two-crystal, P/N application.
Not to be used
2 0 0XXXXXX
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