M62463AFP datasheet(4/17 Pages) RENESAS

4 / 17 page

M62463AFP

REJ03F0275-0200 Rev.2.00 Jun 16, 2008

Page 4 of 16

Functional Description

Function

Description

Fundamental function for Dolby Pro Logic

surround decoder

Adaptive matrix

Input auto-balance

Noise sequencer

Center mode control

ON/OFF

WIDE/NORMAL/PHANTOM

Modified Dolby B type noise reduction

4 ch (L, R, C, S), 3 ch (L, R, C) mode switch

RAM for digital delay

10-Kbit RAM

Surround delay time

15.4, 20.5, 25.6, 29.2 ms

(for Dolby Pro Logic surround)

51.2 ms (for space surround)

Circuit for space surround

Digital delay circuit can be used for space surround such

as a Disco, Hall or Live, and Karaoke echo

Echo delay time

123,184 ms

Feedback volume

Delay signal feedback volume

–3 to –21 dB / 3 dB step, and –

∞

Microphone volume

Internal microphone volume

0 to –18 dB / 3 dB step, and –

∞

Cch/Sch master volume

0 to –87 dB / 1 dB step, and –

∞

Bypass switch

Bypass the decode circuit

Output mute

Mute the Lch and Rch output

MCU interface

Controlled by 3-lines serial data from MCU

Including the chip address (2-bit)

Current control oscillation circuit

Including the oscillation circuit without external parts

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