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MC44CC373CAS 数据表(PDF) 12 Page - Freescale Semiconductor, Inc

部件名 MC44CC373CAS
功能描述  CMOS Audio/Video RF Modulators
PDF  28 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

MC44CC373CAS 数据表(HTML) 12 Page - Freescale Semiconductor, Inc

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Freescale Semiconductor
MC44CC373
I2C PROGRAMMING SUMMARY TABLES
Sound
Video
UHF
When UHF oscillator is disabled, do not program the
frequency register N; also writing to Option Control Registers
1 and 2 is not allowed.
Sound PLL
Standby Mode
Do not program the frequency register N value and Optional Control
Registers during standby mode.
Logic Output Port
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 section
bias turned OFF)
AUX
Auxiliary Audio Input
0
AUX input disabled (normal mode)
1
AUX input enabled
SYSL
System L/BG Selection
SYSL only applies to MC44CC373/374xxxx
0
System B/G enabled, System L disabled (FM sound and
negative video modulation)
1
System L enabled, System B/G disabled (AM sound and
positive video modulation)
PWC
Peak White Clip
0
Peak White Clip ON (System B/G)
1
Peak White Clip OFF (System L)
PW1
PW0
Peak White Clip Level
00
0
1
1.0 Volt - Default
10
11
TPEN
Test Pattern Signal
0
Test pattern signal OFF (normal operation)
1
Test pattern signal ON (picture and sound)
OSC
UHF Oscillator
MC44CC373/
374CAxxx
MC44CC374T1Axx
0
Normal operation.
UHF oscillator disabled.
1
UHF oscillator disabled.
Normal operation.
ATT
Modulator Output Attenuation
0
Normal operation
1
Modulator output attenuation (sound and video
modulators sections bias turned OFF.
SREF
Description
0
Sound Reference frequency = 31.25 kHz
1
Sound Reference frequency = 62.5 kHz
OSC
SO
ATT
Combination of 3-bits
1
1
1
Modulator standby mode
(MC44CC373/374CAxx)
0
1
1
Modulator standby mode
(MC44CC374T1Axx)
LOP
Description
0
Pin 3 is low voltage
1
Pin 3 is high impedance



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