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MC44BC374T1 Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc

Part No. MC44BC374T1
Description  PLL Tuned PAL/NTSC UHF and VHF Audio/Video High Integration Modulator IC
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC44BC374T1 Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc

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MC44BC374T1 Technical Data
I2C Programming
8I2C Programming
WRITE MODE: Test Mode 1 and VHF Range
X2
X1
X0
State
Description
0
0
0
1.a
Normal operation
0
0
1
1.b
RF frequency divided for low frequency testing or VHF range: RF/2
010
1.c
RF/4
011
1.d
RF/8
100
1.e
RF/16
1
0
1
1.f
DC drive applied to modulators: Non-inverted video at TVOUT
1
1
0
1.g
DC drive applied to modulators: Inverted video at TVOUT
111
1.h
Transient output inhibit disabled
During this speed-up test mode, ATT=0 forces sound current source to 1
µA, and
ATT=1forces itto10
µA.
Sound
Standby Mode
SFD1
SFD0
Sound Subcarrier Freq (MHz)
00
4.5
01
5.5
10
6.0
11
6.5
PS
Picture-to-Sound Ratio (dB)
012
116
SO
Sound Oscillator
0
Sound oscillator ON (Normal mode)
1
Sound oscillation disabled (oscillator and PLL
OSC
SO
ATT
Combination of 3-bits
0
1
1
Modulator standby mode.
UHF
Video
OSC
UHF Oscillator
1
Normal operation
0
UHF oscillator disabled (oscillator and PLL
sections bias turned OFF)
ATT
Modular Output Attenuation
0
Normal operation
1
Modulator output attenuation (sound and
video modulators sections bias turned OFF.
PWC
Peak White Clip
0Peak White Clip ON
1Peak White Clip OFF
TPEN
Test Pattern Signal
0
Test pattern signal OFF (normal operation)
1
Test pattern signal ON (picture and sound)
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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