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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
DESCRIPTION
The M65831A is an IC developed for producing echo effects added to voice signals picked up by microphone for karaoke applications. The IC has the largest memory among the digital delay series. As it's design is aimed at high performance, it is best suited to provide radio cassette tape recorders and miniature unit audio system with quality echo function. Being pin compatible with the M65830CP / FP and M65843AP / FP, the M65831AP / FP is suitable for upgrading the series.
Outline FEATURES
*Built-in input / output filters, A-D and D-A conver ters, and memory realize a delay system with only a single chip *Capable of composing low-noise and low-distortion delay system at low cost by ADM system (No=-92dB typ, THD=0.5% typ) *Control mode selections available from 2 kinds : easy mode using parallel data and microcomputer mode using serial data *Sleep mode can be selected to stop IC functions *Built-in automatic reset circuit
Outline 24P4 (AP) 2.54mm pitch 600mil DIP (13.0mm X 31.1mm X 3.8mm)
RECOMMENDED OPERATING CONDITIONS
Supply voltage range Rated supply voltage VCC,VDD=4.5 to 5.5V VCC,VDD=5.0V Outline 24P2W-A(AFP) 1.27mm pitch 450mil SOP (8.4mm X15.0mm X2.0mm)
SYSTEM CONFIGURATION
RAM
L
VOCAL CUT
HPF LPF HPF KEY CONTROL
MIX
BASS
MIX
L
R
CTL NORM SEARCH
MIX
BASS
MIX
R
VISS
VISS
MIC1 MIC AMP MIC2 MIC AMP
MIC VOL MIX MIC VOL
M65381AP/FP
MIX ECHO ECHO VOL
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
Pin Configuration
VDD XIN XOUT D1/REQ D2/SCK D3/DATA D4/IDSW TEST EASY/ -COM
1 2 3 4
24 23 22 21
Vcc LPF1 IN LPF1 OUT OP1 OUT OP1 IN REF CC1 CC2 OP2 IN OP2 OUT LPF2 IN LPF2 OUT
M65831AP/FP
5 6 7 8 9
20 19 18 17 16 15 14 13
SLEEP 10 D-GND A-GND 11 12
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
BLOCK DIAGRAM
LPF1 IN LPF1 OUT OP1 OUT OP1 IN
4.7k
CC1
CC2
OP2 IN
OP2 LPF2 OUT IN
4.7k
LPF2 OUT
23
22
21
20
18 MOD
17 DEM
16
15 14
13
LPF1 REF
OP1 COMP
OP2
LPF2
19
1/2 Vcc D1 AUTO RESET RESET CLOCK DELC DO0 DO1
MAIN CONTROL
MO MI
48K-bit SRAM
OSCILLATOR
DELAY TIME CONTROL
2
3
4
5
6
7
8
9 10
11
12
1
24
Vcc
XIN XOUT
SLEEP D-GND A-GND VDD D1/REQ D3/DATA TEST D2/SCK D4/IDSW EASY/ -COM
Unit Resistance:
MITSUBISHI ELECTRIC
3
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
PIN DESCRIPTION
No.
1 2 3 4
Symbol
VDD XIN XOUT D1/REQ D2/SCK D3/DATA D4/IDSW TEST
Name
Digital VDD Oscillator input Oscillator output Delay1/Request Delay2/Shift clock Delay3/Serial data Delay4/ID switch Test
I/O
Supply voltage
Function
I O I I I I I I I
Connects to 2MHz ceramic filter Easy mode:inputs D1 data -COM mode:inputs request data Easy mode:inputs D2 data -COM mode:inputs shift clock Easy mode:inputs D3 data -COM mode:inputs serial data Easy mode:inputs D4 data -COM mode:controls ID code L=normal mode H=easy mode L= -COM mode H=sleep mode L=normal mode Connects to analog GND at one point Connects to analog GND
5 6 7 8 9
EASY/ -COM Easy/ -COM SLEEP D GND A GND LPF2 OUT LPF2 IN OP2 OUT OP2 IN CC2 CC1 REF OP1 IN OP1 OUT LPF1 OUT LPF1 IN VCC Sleep Digital GND Analog GND Low pass filter2 output Low pass filter2 input OP-AMP2 output OP-AMP2 input Current control 2 Current control 1 Reference OP-AMP1 input OP-AMP1 output Low pass filter1 output Low pass filter1 input Analog VCC
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
O I O I
Forms low pass filter with external C.R Forms integrator with external C.R
=1/2VCC
I O O I
Forms integrator with external C.R
Forms low pass filter with external C.R Supply voltage
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
ABSOLUTE MAXIMUM RATINGS
(Vcc=5V,f=1kHz,Vi=100mVrms,Ta=25C,unless otherwise noted) Symbol Parameter Conditions Ratings Units Vcc Supply voltage 6.5 V Icc Pd Topr Tstg
Circuit cuurent
M65831AP Power dissipation M65831AFP
100
1 650
mA
W mW
Operating temperature Storage temperature
-20~+75 -40~+125
C C
POWER DISSIPATION Pd (mW)
THERMAL DERATING (MAXIMUM RATING)
1000 800
650
AP
AFP
600 400
325
200 0
0
25
50
75
100
125
AMBIENT TEMPERATURE Ta (C )
RECOMMENDED OPERATING CONDITIONS
Symbol Vcc VDD Vcc-VDD fck VIH VIL Parameter Supply voltage Supply voltage Difference voltage Clock frequency High input voltage Low input voltage
MITSUBISHI ELECTRIC
Conditions
Min
Limits Typ
Max
Units V V V MHz V V
4.5 4.5 -0.3 1
0.7VDD
5 5 0 2
5.5 5.5 0.3 3 VDD
0.3VDD
0
5
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
ELECTRICAL CHARACTERISTICS
(Vcc=5V,f=1kHz,Vi=100mVrms,Ta=25C,unless otherwise noted) Limits Symbol Parameter Test conditions
Min Typ Max
Units mA dB Vrms
Icc Gv Vomax THD No SVRR
Circuit current Voltage gain
Maximum output voltage
No signal RL=47k THD=10%
fs=500kHz
18.0 -3.5 0.7 -0.5 1 0.3 0.5 -92 -40 508 508 528 528 14.0
40.0 2.5
1.0 % 1.5 -75 -25 548 ms 548 30.0 mA dBV dB
Output distortion
30kHz LPF fs=250kHz
Output noise voltage DIN-AUDIO
(fs=250kHz)
Supply voltage rejection Vcc=-20dBV,f=100Hz ratio Upon changing Delay Time Upon canceling Sleep Mode
TMUTE Mute time Iccs
Circuit current (Sleep mode)
Sleep Mode
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
OPERATION
1) DELAY TIME
D4
D3
D2
L
D1
L
fs
Td
12.3 24.6 36.9 49.2
L H
H L H L L H H L H L L H H L H L L H H L H 250 500
L
H
61.4 73.7 86.0 98.3 110.6 122.9 135.2 147.5 159.7 172.0 184.3 196.6
L
H
H
fs=sampling frequency(kHz) Td=delay time(msec)
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
2) EASY MODE(EASY / -COM=H) D1,D2,D3,D4 and sleep are for easy mode D1 D2 D3 D4 SLEEP
delay time
cf 11-1) cf 11-5)
3) -COM MODE(EASY / -COM=L) REQ
SCK
DATA
SLEEP
D1
D2
D3
D4
MUTE
ID1 ID2 ID3 ID4 ID CODES H=MUTE cf 11-4)
DELAY TIME cf 11-1) H=SLEEP MODE cf 11-5)
TIMING DIAGRAM This Timing chart shows that delay time is set by serial data from -COM.
DATA signal is latched at the falling edge of SCK signal,the last ten data are set at the rising edge of REQ signal when ID codes are satisfied. ID1,ID3:L ID2 :H ID4 :equal to IDSW
*
*
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
t5
REQ,SCK,DATA INPUT TIMING
REQ
t1 t4
SCK
t2 t3 ds
DATA
SLEEP
D1
D2
D3
D4
MUTE
ID1 ID2 ID3 ID4
Symbol t1 ds t2 t3 t4 t5
Parameter SCK pulse width SCK pulse duty DATA setup time DATA hold time REQ hold time REQ pulse width
min 250
typ
max
Units nsec
50 100 100 100 250 t1/2 t1/2
% nsec nsec nsec nsec
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
4) MUTING (1)Easy mode Automatic mute upon changing delay time,cancelling SLEEP mode and power-on. (2) -COM mode MUTE=H:mute MUTE=L:automatic mute AUTOMATIC MUTE
DELAY SIGNAL BEFORE CHANGE MODE DELAY SIGNAL AFTER CHANGE MODE
MUTE TIME
(a) UPON CHANGING DELAY TIME
DELAY SIGNAL
MUTE TIME CANCEL SLEEP MODE
(b) UPON CANCELLING SLEEP MODE
DELAY SIGNAL
120msec
POWER ON
MUTE TIME
(c) UPON POWER-ON
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
5) SLEEP MODE SLEEP data is H:clock and RAM stop to reduce circuit current (SLEEP mode) L:normal operation
6) SYSTEM RESET Automatically reset power-on. The reset time is about 120msec. Delay time is set at 147.5msec.
MITSUBISHI ELECTRIC
11
S30 0.01 1 47k 2.7k
1
Vi
15k 15k 0.1 0.1 47 0.1 30 560p 0.1 560p 30 10k 15k 5600p 15k
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50
1 5600p
Vo
100
10k
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Vcc
A 23 19
4.7k MOD DEM 4.7k
0.1
S24
1
24
22 21 20 18 15 14 13
17
16
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2
VCC
TEST CIRCUIT
DIGITAL ECHO (DIGITAL DELAY)
12
COMP
D1 RESET DO0 DO1
MITSUBISHI ELECTRIC
1/2 Vcc
LPF1
OP1 OP2
LPF2
MAIN CONTROL
DELC
MO MI
AUTO RESET DELAY TIME CONTROL
CLK
48K-bit SRAM
OSCILLATOR
DIG.GND
ANG.GND
VDD
1
1M S4
2 1 2
2
S5
1
3
4
5
6
S6
2 1
7
S7
2 1
8
9
10
S10
2 1
11
12
M65831AP/FP
0.1 2MHz 100p
MITSUBISHI SOUND PROCESSOR ICS
Units : Resistance Capacitance F
100p
GND VDD
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
TEST METHODS Switch condition
No
* 1 or 2
Symbol 4 Icc 1 Gv1 * Gv2 * Tda 1 Tdb 2 Tdc 1 Tdd 2 Tde 1 Tdf 2 Tdg 1 Tdh 2 Tdi 1 Tdj 2 Tdk 1 Tdl 2 Tdm 1 Tdn 2 Tdo 1 Tdp 2 Vomax 1 * Vomax 2 * THD 1 THD 2 No SVRR
S S 5 SSS S S 6 7 10 24 30
Parameter
Sampling frequency 500kHz 250kHz
notes
1 Current circuit 2 Voltage gain
500kHz
3 Delay time
250kHz
4 (max)
Output voltage
500kHz 250kHz 500kHz 250kHz 250kHz
5 distortion 6 voltage
Total harmonic Output noise
111 **1 **2 111 111 211 211 121 121 221 221 112 112 212 212 122 122 222 222 **1 **2 ***1 ***2 * * * *
1 1 1 1
2 1 1 1
2 No signal 1 1 1
cf. 11-1)
1 1 1 1 1
1 1 1 1
1 1 30kHz L.P.F. 1 THD=10% 1 30kHz L.P.F. 11
DIN AUDIO
* 2 1 1 1 Vi=0mVrms * * * * 1 1 2 f=100Hz *111 2 * 11 1
Vcc=-20dBv,
7 rejection ratio 8 Mute time
Supply voltage
MUTE T 2 1 * MUTE S * *
Upon changing Delay Time Upon cancelling Sleep Mode
MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
APPLICATION EXAMPLE
1.EASY MODE
IN
1 15k 5600p 10k 15k 560p LPF1 OUT 1 30k 0.01 0.1 0.1 30 OP1 OUT OP1 IN CC1 CC2 47 0.1 0.1 30 15k 10k 15k 560p 1 2.7k 3k 5600p 0.01
non-porlar
OUT
24
Vcc
23
LPF1 IN
22
21
20
19
REF
18
17
16
EASY/-COM OP2 IN
15
OP2 OUT
14
LPF2 IN DGND
13
LPF2 OUT
SLEEP
1
2
1M
3
4
5
6
7
8
9
10
SLEEP SW
11
12
100
0.1 2MHz 100p 100p SETTING DELAY TIME
2. -COM MODE
IN
1 15k 5600p 10k 15k 560p LPF1 OUT
1 non-porlar
30k 0.01
3k 15k 5600p 15k 560p 1 2.7k 0.01
0.1 30 OP1 OUT
0.1 47 0.1 0.1 30
10k
AGND
XOUT
TEST
VDD
XIN
D1
D2
D3
D4
OUT
EASY/ -COM OP2 IN
OP2 OUT
OP1 IN
CC1
24
Vcc
23
LPF1 IN
22
21
20
19
REF
18
17
CC2
16
15
14
LPF2 IN DGND
13
LPF2 OUT
SLEEP
1M 100 0.1 2MHz 100p 100p
SLEEP SW
1
2
3
4
5
6
7
8
TEST
9
10
11
12
-COM MITSUBISHI ELECTRIC
Units Resistance Capacitance F
14
AGND
XOUT
DATA
IDSW
REQ
SCK
VDD
XIN

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