M62465FP Datasheet, PDF (1/25 Pages) Mitsubishi Electric Semiconductor – Dolby Pro Logic Surround

M62465FP
Dolby Pro Logic Surround
REJ03F0219-0201
Rev.2.01
Mar 31, 2008
Description
The M62465FP is a single chip LSI supporting the Dolby Pro Logic surround. This LSI contains all functions
necessary for Dolby Pro Logic surround. In addition, it has Digital 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 symbol are trademarks of Dolby Laboratories Licensing Corporation. San Francisco,
CA94103-4813, USA.
This device available only to licensees of Dolby Lab.
Licensing and application information may be obtained from Dolby Lab.
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, 28.6 ms for Dolby Pro Logic Surround.
• C/Sch Trimmer: 0 to −31 dB/1 dB Step.
• Digital Space Surround Mode: Disco/Hall/Live mode and 5 delay time positions.
• Digital Echo function for KARAOKE: (Short echo) Delay time = 147.5 ms, (Long echo) Delay time = 196.6 ms.
• BY-PASS Mode: Input signal through output.
System Block Diagram
Lch IN
Rch IN
MIC IN
L+R
2
L−R
2
Input
auto-
balance
control
Digital noise
sequencer
L
Adaptive
R
matrix
C
S
7 kHz
Modified
dolby
S
LPF _B-NR
LPF-IN LPF-OUT NR-IN
L
R
Center ^C
trim
Surround ^S
trim
Digital delay
MCU interface
DATA SCK REQ
Lch
Rch
CENTER
SURROUND
REJ03F0219-0201 Rev.2.01 Mar 31, 2008
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