mc44bc373c Freescale Semiconductor, Inc, mc44bc373c Datasheet - Page 7

• Manufacturer Part Number: mc44bc373c
• Description: Pll Tuned Uhf And Vhf Audio/video High Integration Modulator
• Manufacturer: Freescale Semiconductor, Inc

8 I
WRITE MODE: Test Mode 1 and VHF Range
Sound
Video
SFD1
SYSL
TPEN
PWC
SO
PS
X2
0
0
0
0
1
1
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
2
C Programming
Sound oscillator ON (Normal mode)
Sound oscillation disabled (oscillator and PLL
section bias turned OFF)
System B/G enabled, System L disabled (FM
sound and negative video modulation)
System L enabled, System B/G disabled (AM
sound and positive video modulation)
Peak White Clip ON (System B/G)
Peak White Clip OFF (System L)
Test pattern signal OFF (normal operation)
SFD0
X1
0
0
1
1
0
0
1
1
0
1
0
1
Picture-to-Sound Ratio (dB)
System L/BG Selection
X0
Sound Subcarrier Freq (MHz)
(MC44BC373C only)
0
1
0
1
0
1
0
1
Test Pattern Signal
Sound Oscillator
Peak White Clip
State
1.a
1.b
1.d
1.e
1.g
1.h
1.c
1.f
Freescale Semiconductor, Inc.
12
16
For More Information On This Product,
4.5
5.5
6.0
6.5
Normal operation
RF frequency divided for low frequency testing or VHF range: RF/2
RF/4
RF/8
RF/16
DC drive applied to modulators: Non-inverted video at TVOUT
DC drive applied to modulators: Inverted video at TVOUT
Transient output inhibit disabled (ie speed up mode)
During this speed-up test mode, ATT=0 forces sound current source to 1µA, and
ATT=1 forces it to 10µA.
MC44BC373C/374C Technical Data
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UHF
Standby Mode
MC44353/4/5 Compatibility
Logic Output Port
OSC
OSC
LOP
ATT
TB1
0
1
0
1
1
0
1
0
1
Normal operation
UHF oscillator disabled (oscillator and PLL
sections bias turned OFF)
Normal operation
Modulator output attenuation (sound and
video modulators sections bias turned OFF.
Normal mode (Full programmability)
Limited programmability and compatibility with
MC44353
Pin 3 is low voltage
Pin 3 is high impedance
Description
SO
1
Modulator Output Attenuation
ATT
1
Modulator standby mode
UHF Oscillator
Description
Description
Combination of 3-bits
I2C Programming