Document
MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
FEATURES
•Capable of controlling each function by serial data Electric volume •Volume level........... 32step ( 0dB ~ -∞ ) •Low noise................-100dBv(JIS-A) Bass/Treble.......(0dB,±3dB,1±6dB,±10dB) Bass boost.......................(ON/OFF) Surround......................... (ON/OFF) Input selector ...................4 - Inputs (A,B,C,D) MIC mixing
PACKAGE
Outline 42P2R APPLICATION
Mini-Stereo,Radio-Cassette tape recorder,TV RECOMMENDED OPERATING CONDITIONS Supply voltage range ..... AVDD:7.0~8.0V Rated supply voltage ..... AVDD:7.5V DVDD:4.5~5.5V DVDD:5.0V
SYSTEM BLOCK DIAGRAM
MIC IN Rch Rec out
A R ch B IN C D A L ch IN B C D
INPUT SELECTER
MIC MIXER
BASS BOOST
SURROUND
R ch OUT L ch OUT
TONE
ELECTRIC VOLUME
µ -com INTERFACE
CLK DATA LATCH Lch Rec out
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MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
PIN CONFIGURATION
VREFI SUR R SUR C IN1A IN1B IN1C IN1D REC OUT1 INBAS1 NFBAS1 FBAS1 FTRE1 TONE OUT1 VOL IN1 FBB1 NFBB1 INBB1 OUT1 DGND LATCH DATA
1 2 3 4 5 6 7
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
AGND VREFO MIC IN IN2A IN2B IN2C IN2D REC OUT2 INBAS2 NFBAS2 FBAS2 FTRE2 TONE OUT2 VOL IN2 FBB2 NFBB2 INBB2 OUT2 AVDD DVDD CLK
M62428FP
8 9 10 11 12 13 14 15 16 17 18 19 20 21
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MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
BLOCK DIAGRAM
21 21 µ -com INTERFACE 20 19 18
56K
CLK DVDD AVDD OUT2 INBB2 NFBB2 FBB2 VOL IN2 TONE OUT2 FTRE2 FBAS2 NFBAS2 INBAS2 REC OUT2 IN2D IN2C IN2B IN2A MIC IN VREFO AGND
22
DATA LATCH DGND OUT1 INBB1 NFBB1 FBB1 VOL IN1 TONE OUT1 FTRE1 FBAS1 NFBAS1 INBAS1 REC OUT1 IN1D IN1C IN1B IN1A SUR C SUR R VREFI
:Ω :F
25
24
23
26
27
1.5K
SW19
+ -
10K
28
BASS BOOST SW
BASS BOOST SW
29
30
10K
31
32
22.5K 8.5K 3K
SW17-C
10K
SW16-C SW14-B SW14-C
10K
SW15-B SW15-C
1.5K + -
22.5K 8.5K 3K
33
BASS Amp2
56K
34
SW13
34.7K
SW12
34.7K
BASS Amp1
1.5K + -
56K
35
100K
44.7K
44.7K
44.7K
44.7K
36
SW9 SW7 SW5 SW3 19K
+ -
SW8 SW6
100K
37
100K
38
100K
39
SW13
SW13
AVDD
SW2
40
100K
MICAmp
ref
+ -
SURROUND SW
51K 51K AGND
41
42
refAmp
Units
Resistance Capacitance
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1
2
3
SW1
4
45.8K
45.8K
19K
100K
+
A B Buff Amp2 SW11
+
A
B
100K
SW10
5
SW4
100K
Buff Amp1
6
7
34.7K
34.7K
100K
MIX Amp2
MIX Amp1
+ -
8
9
+ -
10
11 12
24K 10K 4.5K
+ -
SW17-B
10K
195K
195K
SW16-B
24K 10K 4.5K
13
195K
195K
TONE Amp2
+ -
TONE Amp1
14
VR2
VR1
15
SW18
16
10K
FIN Amp2
+ -
FIN Amp1
BB Amp1
+
-
-
BB Amp2
195K
195K 1.5K
17
470 +
470
56K
MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Symbol
VREFI SUR R SUR C IN1A IN1B
Channel 1 input RefAmp input
Function
External R connection pin for setting time constant for surround External C connection pin for setting time constant for surround
IN1C IN1D RECOUT1 INBAS1 NFBAS1 FBAS1 FTRE1
REC output of channel 1 Input of BASS Amp in bass section Output of BASS Amp in bass section Resonant impedance (band-pass filter) connection pin for bass section Resonant impedance (band-pass filter) connection pin for treble section
TONEOUT1 TONE output of channel 1 VOLIN1 FBB1 NFBB1 INBB1 OUT1 DGND LATCH DATA
R-rudder volume input of channel 1 Input of bass boosting resonant buffer amp Output of bass boosting resonant buffer amp Resonant impedance (band-pass filter) connection pin for bass boost section Channel 1 output Ground of the internal logic circuit Input pin of latch signal. Changes the circuit status at the rising edge of the latch signal Input pin of control data. Reads data at the rising edge of clock MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
Pin No. 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Symbol
CLOCK DVDD AVDD OUT2 INBB2 NFBB2 FBB2 VOLIN2 TONEOUT2 FTRE2 FBAS2 NFBAS2 INBAS2 RECOUT2 IN2D IN2C
Channel 2 input
Function
Clock input pin for serial data transfer Power supply of internal logic circuit Power supply of internal analog circuit Channel 2 output Resonant impedance (band-pass filter) connection pin for bass boost section Output of bass boosting resonant buffer amp Input of bass boosting resonant buffer amp R-rudder volume input of channel 2 TONE output of channel 2 Resonant impedance (band-pass filter) connection pin for treble section Resonant impedance (band-pass filter) connection pin for bass section Output of BASS Amp in bass section Input of BASS Amp in bass section REC output of channel 2
IN2B IN2A MIC IN VREFO AGND
Microphone input RefAmp output Ground of the internal analog circuit
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MITSUBISHI SOUND PROCESSORS
M62428FP
DIGITAL SOUND CONTROLLER
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C,unless otherwise noted)
Symbol AVdd DVdd Pd K Topr T.