M62463AFP
Functional Description
Function
1
Fundamental function for Dolby Pro Logic
surround decoder
Description
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
10-Kbit RAM
15.4, 20.5, 25.6, 29.2 ms
(for Dolby Pro Logic surround)
51.2 ms (for space surround)
Digital delay circuit can be used for space surround such
as a Disco, Hall or Live, and Karaoke echo
123,184 ms
Delay signal feedback volume
–3 to –21 dB / 3 dB step, and –∞
Internal microphone volume
0 to –18 dB / 3 dB step, and –∞
0 to –87 dB / 1 dB step, and –∞
Bypass the decode circuit
Mute the Lch and Rch output
Controlled by 3-lines serial data from MCU
Including the chip address (2-bit)
Including the oscillation circuit without external parts
2
3
RAM for digital delay
Surround delay time
4
5
6
7
8
9
10
11
12
Circuit for space surround
Echo delay time
Feedback volume
Microphone volume
Cch/Sch master volume
Bypass switch
Output mute
MCU interface
Current control oscillation circuit
REJ03F0275-0200 Rev.2.00 Jun 16, 2008
Page 4 of 16
RENESAS [ RENESAS TECHNOLOGY CORP ]
