MC44BC374EJB Freescale Semiconductor, MC44BC374EJB Datasheet - Page 7

• Manufacturer Part Number: MC44BC374EJB
• Description: IC MODULATOR ANT BOOSTER 24TSSOP
• Manufacturer: Freescale Semiconductor
• Type: Modulatorr

Specifications of MC44BC374EJB

• Applications: Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7 I
WRITE MODE: Test Mode 1 and VHF Range
Sound
Video
SFD1
SYSL
TPEN
PWC
AUX
PS
SO
X2
0
0
0
0
1
1
1
1
0
0
1
1
0
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).
AUX input disabled (normal mode).
AUX input enabled.
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 and B/G Selection
X0
Auxiliary Audio Input
Sound Subcarrier Freq (MHz)
0
1
0
1
0
1
0
1
Test Pattern Signal
MC44BC373 only
Sound Oscillator
Peak White Clip
State
1.a
1.b
1.c
1.d
1.e
1.g
1.h
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.
MC44BC373/374 Technical Data
Go to: www.freescale.com
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 (fully programmable).
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 (sound
and UHF oscillator, sound and
video modulator section bias
turned OFF, and I
standby mode)—BST is active.
UHF Oscillator
Description
Description
Combination of 3-bits
I
2
C Programming
2
C bus section