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STV2236 数据表(PDF) 36 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) 36 Page - STMicroelectronics

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4.8.8 Color Demodulators
4.8.9 Chroma Delay Line
4.8.10 Chroma Reference Output
4.9 SCANNING PART
4.9.1 Synchronization Separator
4.9.2 Horizontal Oscillator
FMax.-W
Maximum Phase Correction
Register 14(HEX), d6 = 1, d7 = 1
±20
Deg
Flesh-W
Chroma Input Phase at Max. cor-
rection
Register 14(HEX), d6 = 1, d7 = 1
±45
Deg
Frange-W
Auto Flesh Control
Register 14(HEX), d6 = 1, d7 = 1
±90
Deg
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
DoffsetP
Demodulator Offset
PAL/NTSC mode, 75% color bar
±2
%
DoffsetS
Demodulator Offset
SECAM mode, 75% color bar
±2
%
PhaseErr
Phase Error in demodulated signal
PAL/NTSC mode, 90% matrix
5
Deg
TransPal
Chroma Transient Time
PAL mode, 75% color bar green-
magenta transient
700
ns
transSEC
Chroma Transient Time
SECAM mode, 75% color bar green-
magenta transient
900
ns
Naxis
R-Y Demodulation Axis
NTSC mode, 104° matrix
104
Deg
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Cdelay
Delay of delayed signals
Relative to non delayed signal
63.9
64
64.1
µs
Ctrans
Difference of transient times be-
tween delayed and non delayed
signals
SECAM mode. tRN -tRN+1
tRN: rise time line N (direct)
tRN+1: rise time line N +1 (delayed)
150
ns
Dgain
Differential Gain of delayed signals
versus direct signals
SECAM mode. Gn+1/Gn
Gn: direct channel gain
Gn+1: delayed channel gain
-0.5
0
0.5
dB
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
CHR-amp
Chroma VCO Reference Signal
Amplitude
0.4
VPP
ISCHR
Sink Current
0.5
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VSYNC
Synchronization Pulse Amplitude
50
300
450
mV
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
fH50
Horizontal Frequency
50 Hz mode
15.6
kHz
fH60
Horizontal Frequency
60 Hz mode
15.7
kHz
fRANGE
Frequency Control Range
Low Frequency
High Frequency
14.7
15.9
15.0
16.3
15.3
—
kHz
fFREE
Free Frequency when PLL1 opened
15.3
15.6
15.9
kHz



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