Mitsubishi M65831AFP Digital echo (digital delay) Datasheet

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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
Outline 24P2W-A(AFP)
1.27mm pitch 450mil SOP
(8.4mm X15.0mm X2.0mm)
VCC,VDD=4.5 to 5.5V
Rated supply voltage
VCC,VDD=5.0V
SYSTEM CONFIGURATION
RAM
HPF
L
VOCAL
CUT
LPF
BASS
MIX
L
MIX
BASS
MIX
R
KEY CONTROL
HPF
R
MIX
CTL
NORM
SEARCH
MIC1
VISS
VISS
M65381AP/FP
MIC VOL
MIC AMP
MIC2
MIX
MIX
MIC VOL
ECHO
MIC AMP
MITSUBISHI
ELECTRIC
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ECHO VOL
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
Pin Configuration
1
24
Vcc
XIN
2
23
LPF1 IN
XOUT
3
22
LPF1 OUT
D1/REQ
4
21
OP1 OUT
D2/SCK
5
20
OP1 IN
D3/DATA
6
19
REF
D4/IDSW
7
18
CC1
TEST
8
17
CC2
EASY/µ -COM
9
16
OP2 IN
SLEEP 10
15
OP2 OUT
D-GND
11
14
LPF2 IN
A-GND
12
13
LPF2 OUT
M65831AP/FP
VDD
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
BLOCK DIAGRAM
LPF1
IN
LPF1
OUT
OP1
OUT
23
22
21
20
CC1
CC2
OP2
IN
18
17
16
MOD
DEM
4.7k
OP2 LPF2
OUT IN
LPF2
OUT
15 14
13
OP2
OP1
LPF1
REF
4.7k
OP1
IN
LPF2
COMP
19
1/2 Vcc
D1
AUTO
RESET
RESET
CLOCK
OSCILLATOR
2
3
XIN XOUT
DO0
DO1
MAIN CONTROL
48K-bit
SRAM
MO
MI
DELC
DELAY TIME
CONTROL
4
5
6
7
8
9 10
11
12
1
SLEEP D-GND A-GND VDD
D1/REQ D3/DATA TEST
D2/SCK D4/IDSW EASY/µ -COM
24
Vcc
Unit Resistance:Ω
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
PIN DESCRIPTION
No.
Symbol
Name
Function
I/O
1
VDD
Digital VDD
2
XIN
Oscillator input
I
3
XOUT
Oscillator output
O
4
D1/REQ
Delay1/Request
I
Easy mode:inputs D1 data
µ -COM mode:inputs request data
5
D2/SCK
Delay2/Shift clock
I
Easy mode:inputs D2 data
µ -COM mode:inputs shift clock
6
D3/DATA
Delay3/Serial data
I
Easy mode:inputs D3 data
µ -COM mode:inputs serial data
7
D4/IDSW
Delay4/ID switch
I
Easy mode:inputs D4 data
µ -COM mode:controls ID code
8
TEST
Test
I
L=normal mode
9
EASY/ µ -COM Easy/ µ -COM
I
H=easy mode
L=µ -COM mode
10
SLEEP
Sleep
I
H=sleep mode
L=normal mode
11
D GND
A GND
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
12
13
14
15
16
17
18
19
20
21
22
23
24
LPF2 OUT
LPF2 IN
OP2 OUT
OP2 IN
CC2
CC1
REF
OP1 IN
OP1 OUT
LPF1 OUT
LPF1 IN
VCC
Supply voltage
Connects to analog GND at one point
Connects to analog GND
O
I
O
I
Forms low pass filter with external C.R
Forms integrator with external C.R
=1/2VCC
I
O
O
I
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ELECTRIC
4
Connects to 2MHz ceramic filter
Forms integrator with external C.R
Forms low pass filter with external C.R
Supply voltage
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
ABSOLUTE MAXIMUM RATINGS
(Vcc=5V,f=1kHz,Vi=100mVrms,Ta=25°C,unless otherwise noted)
Symbol
Parameter
Conditions
Ratings
Units
Vcc
Supply voltage
6.5
V
Circuit cuurent
100
mA
Pd
M65831AP
Power dissipation M65831AFP
1
650
W
mW
Topr
Operating temperature
-20~+75
°C
Tstg
Storage temperature
-40~+125
°C
POWER DISSIPATION Pd (mW)
Icc
THERMAL DERATING
(MAXIMUM RATING)
1000
AP
800
AFP
650
600
400
325
200
0
0
25
50
75
100
125
AMBIENT TEMPERATURE Ta (°C )
RECOMMENDED OPERATING CONDITIONS
Min
Limits
Typ
Max
Supply voltage
4.5
5
5.5
V
VDD
Supply voltage
4.5
5
5.5
Vcc-VDD
Difference voltage
-0.3
0
0.3
V
V
fck
Clock frequency
1
2
3
MHz
VIH
High input voltage
0.7VDD
VDD
V
VIL
Low input voltage
0
0.3VDD
V
Symbol
Parameter
Vcc
Conditions
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
ELECTRICAL CHARACTERISTICS
(Vcc=5V,f=1kHz,Vi=100mVrms,Ta=25°C,unless otherwise noted)
Limits
Symbol
Parameter
Test conditions
Min
Typ
Max
Units
18.0
40.0
mA
2.5
dB
Icc
Circuit current
No signal
Gv
Voltage gain
RL=47kΩ
-3.5
-0.5
Maximum output voltage
THD=10%
0.7
1
Vomax
THD
No
SVRR
fs=500kHz
0.3
1.0
fs=250kHz
0.5
1.5
Output noise voltage DIN-AUDIO
(fs=250kHz)
-92
-75
dBV
Supply voltage rejection
∆Vcc=-20dBV,f=100Hz
ratio
-40
-25
dB
548
Output distortion
TMUTE Mute time
Iccs
Vrms
Circuit current
(Sleep mode)
%
30kHz LPF
Upon changing Delay
Time
508
528
Upon canceling Sleep
Mode
508
528
548
14.0
30.0
Sleep Mode
MITSUBISHI
ELECTRIC
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
OPERATION
1) DELAY TIME
D4
D3
D2
D1
fs
L
12.3
H
24.6
L
36.9
H
49.2
L
L
H
L
L
H
H
L
L
H
L
L
H
H
500
61.4
H
73.7
L
86.0
H
98.3
L
110.6
H
122.9
L
135.2
H
H
Td
147.5
250
L
159.7
H
172.0
L
184.3
H
196.6
fs=sampling frequency(kHz)
Td=delay time(msec)
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
2) EASY MODE(EASY / µ -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) µ -COM MODE(EASY / µ -COM=L)
REQ
SCK
DATA
SLEEP
D1
D2
D3
D4
MUTE
ID1 ID2 ID3 ID4
ID CODES
DELAY TIME cf 11-1)
H=SLEEP MODE cf 11-5)
H=MUTE cf 11-4)
TIMING DIAGRAM
This Timing chart shows that delay time is set by serial data from µ -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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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
REQ,SCK,DATA INPUT TIMING
t5
REQ
t1
t4
SCK
t2 t3
ds
DATA
Symbol
SLEEP
D1
D2
D3
Parameter
t1
SCK pulse width
ds
SCK pulse duty
t2
DATA setup time
t3
D4
MUTE
min
ID1 ID2 ID3 ID4
typ
250
max
Units
nsec
50
%
100
t1/2
nsec
DATA hold time
100
t1/2
nsec
t4
REQ hold time
100
nsec
t5
REQ pulse width
250
nsec
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
4) MUTING
(1)Easy mode
Automatic mute upon changing delay time,cancelling SLEEP mode
and power-on.
(2)µ -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
MUTE TIME
POWER ON
(c) UPON POWER-ON
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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
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S24
2
1
A
S30
2
50
VCC
24
0.1µ
MITSUBISHI
ELECTRIC
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100p
0.1µ
1
VDD
CLK
2
2MHz
1M
3
100p
2
DELC
1
2
S5
5
1
DELAY TIME
CONTROL
S4
4
20
19
47µ
DO0
MOD
18
0.1µ
2
1
S6
6
2
1
S7
7
MAIN CONTROL
OP1
4.7k
21
D1
COMP
RESET
LPF1
22
30
0.1µ
8
DO1
DEM
17
0.1µ
9
16
30
MI
2
1
13
GND
VDD
11
1µ
12
ANG.GND
48K-bit
SRAM
LPF2
14
560p
10k
5600p
15k
DIG.GND
S10
10
OP2
MO
15
4.7k
0.1µ
15k
2.7k
47k
0.01µ
Vo
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OSCILLATOR
AUTO
RESET
560p
15k
15k
23
10k
1µ
5600p
1/2 Vcc
100µ
1
tr
ice
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Units : Resistance Ω
Capacitance F
Vcc
Vi
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MITSUBISHI SOUND PROCESSOR ICS
M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
TEST CIRCUIT
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
TEST METHODS
Switch condition
No
Parameter
Sampling
frequency
1 Current circuit
2 Voltage gain
500kHz
250kHz
500kHz
3 Delay time
250kHz
Output voltage
4 (max)
Total harmonic
5 distortion
Output noise
6 voltage
Supply voltage
7 rejection ratio
8 Mute time
500kHz
250kHz
* 1 or 2
S
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 *
S
5
S S S S S
6 7 10 24 30
1 1 1
* * 1
* * 2
1 1 1
1 1 1
2 1 1
2 1 1
1 2 1
1 2 1
2 2 1
2 2 1
1 1 2
1 1 2
2 1 2
2 1 2
1 2 2
1 2 2
2 2 2
2 2 2
* * 1
* * 2
* * * 1
* * * 2
1
1
1
1
2
1
1
1
notes
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.
1 1
250kHz
THD 1
THD 2
250kHz
No
*
*
* 2 1 1 1 Vi=0mVrms
SVRR
*
*
*
* 1 1 2 f=100Hz
MUTE T 2 1 *
MUTE S * *
*
*
* 1 1 1
2
* 1 1 1
500kHz
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ELECTRIC
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DIN AUDIO
∆Vcc=-20dBv,
Upon changing Delay Time
Upon cancelling Sleep Mode
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M65831AP/FP
DIGITAL ECHO (DIGITAL DELAY)
APPLICATION EXAMPLE
30k
1µ
15k
5600p
0.1µ
30
18
17
16
D4
TEST
EASY/µ-COM OP2 IN
SLEEP
DGND
AGND
7
8
9
10
11
12
SLEEP SW
REF
D3
6
100p
100p
2.µ -COM MODE
SETTING DELAY TIME
1µ
30k
0.1µ
30
AGND
9
10
11
12
100p
REF
µ -COM
MITSUBISHI
ELECTRIC
14
LPF2 OUT
DGND
8
LPF2 IN
SLEEP
7
SLEEP SW
6
CC2
5
OP1 IN
4
2MHz
OUT
13
EASY/ µ -COM OP2 IN
14
TEST
OP2 OUT
15
IDSW
16
3
0.1µ
100p
17
DATA
CC1
18
2.7k
560p
SCK
19
1µ
REQ
20
1M
100µ
15k
10k
0.1µ
XOUT
LPF1 OUT
21
OP1 OUT
22
LPF1 IN
XIN
Vcc
VDD
2
47µ
30
560p
1
0.1µ
0.1µ
0.01µ
5600p
15k
15k
23
3k
0.01µ
non-porlar
1µ
15k
5600p
24
OUT
13
5
2MHz
10k
14
4
0.1µ
IN
15
3
1M
100µ
2.7k
560p
OP2 OUT
OP1 OUT
LPF1 OUT
19
CC2
20
CC1
21
1µ
D2
2
22
15k
10k
D1
1
0.1µ
XOUT
LPF1 IN
XIN
Vcc
VDD
23
0.1µ
30
560p
24
47µ
0.01µ
5600p
15k
0.1µ
15k
10k
3k
0.01µ
non-porlar
LPF2 OUT
1µ
OP1 IN
IN
LPF2 IN
1.EASY MODE
Units Resistance Ω
Capacitance F
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