M62465FP Datasheet, PDF (1/24 Pages) Mitsubishi Electric Semiconductor – Dolby Pro Logic Surround

PRELIMINARY
Notice ; This is not a f inal specif ication.
some parametric limits are subject to change.
MITSUBISHI SOUND PROCESSORS
M62465FP
Dolby Pro Logic Surround
DESCRIPTION
Outline
The M62465FP is a single chip LSI supporting the Dolby Prolgic
surround.This LSI contains all functions necessary for Dolby Pro Logic
surround. In addition,it has Digtal Space Surround functions
(Disco,Hall,Live mode etc.) and echo function for karaoke.
Note:Use of this LSI requires the license of Dolby Laboratories Licensing
Corporation
Dolby and the double-D sy m bol are trademarks of D olby Laboratories
Licensing Corporation.San Francisco,CA94103-4813,USA.
This dev ice av ailable only to licensees of Dolby Lab.
Licensing and application inf ormation may be obtained f rom Dolby Lab.
Outline 80P6N
0.8mm pich QFP
(20.0mm×14.0mm×2.8mm)
Features (Mode)
Upper compatible for M62460FP and less external parts than M62460FP.
Includes all functions requires for Dolby Pro Logic Surround.
•Adaptive Matrix.
•Noise Sequencer by digital noise source and switched capacitor filter.
•Center Mode Control(Wide/Normal/PHANTOM/OFF).
•Modified Dolby B Type Noise Reduction.
•4ch/3ch Stereo Selectable.
•Digital Delay: 15.4, 20, 28.6ms for Dolby Pro Logic Surround.
C/Sch T rimmer: 0 to -31dB/1dB Step.
Digital Space Surround Mode: Disco/Hall/Live mode and 5 delay time positions.
Digital Echo function for KARAOKE: (Short echo) Delay time=147.5ms, (Long echo) Delay
time=196.6ms.
BY-PASS Mode: Input signal through output.
System Configuration
Lch IN
Rch IN
MIC IN
L
Input
Auto-
Balance
Control
Adaptiv e
Matrix
R
C _Center/
S
operating
mode
L+ R
2
Digital Noise
Sequencer
7kHz
LPF
Modified _S ^control
Dolby
Center
T rim
L-R
B-NR
2
Surround
LPF-IN
LPF-OUT NR-IN
T rim
Digital Delay
MCU Interf ace
DATA SCK REQ
L
R
Master
C ^Volume
Control
S
Lch
Rch
CENTER
SURROUND
MITSUBISHI
ELECTRIC
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