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L i is n ar P RicE; Thestric limits e
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tt al s I M I Na fine subjec ot
on. Yecificatichange. AR p o
MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
DESCRIPTION
The M65854 is a CMOS IC built-in Digital Echo function with microphone peripheral circuits for "Karaoke" equipment packed in a single chip. It is suitable for "Karaoke" equipments such as Video CD Player, Mini Stereo, CD-Radio Cassette, TV or VCR.
FEATURES
High performance digital echo circuit thanks to 16Kbit memory * Built-in surround function which works Simulated Stereo for monaural source and Stereo Surround for stereo source * ALC-equipped microphone amplifiers permit excessively
* high input. ALC operating voltage can be set as desired. * 2 microphone volumes and echo effect volume are included
PIN CONFIGURATION
MCLKCONT 1 MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 MIC2NFIN 2 3 42 41 40 MIC1VOL MIC2VOL ECHOVOL AUDSW5 AUDSW4 AUDSW3 AUDSW2 AUDSW1 PS2 PS1 LOUT ROUT VCFIL LIN RIN LPF2OUT LPF2IN2 LPF2IN1 DAINTOUT DAINTIN DACONT
M65854FP
4 5 6 7 8 9
39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
amplifiers * Karaoke entertainment functions such as vocal cut and automatic vocal support system * Built-in current-control oscillation circuit
* Built-in automatic reset circuit activated with power on * The use of AUDIO SW easy to control without Microcomputer * 5V single power supply
* Stereo microphone-line mixing
MIC2OUT 10 MIC2VOLIN 11
MIC OUT 12 LPF1IN1 LPF1IN2 LPF1OUT ADINTOUT ADINTIN ADCONT REF GND 13 14 15 16 17 18 19 20
RECOMMENDED OPERATING CONDITION
* Supply voltage range * * * * * * * * * *Vcc = 4.5 ~ 5.5V Rated supply voltage * * * * * * * * * * Vcc = 5V
VCC 21
SYSTEM CONFIGURATION
Lch INPUT
SOURCE SELECTOR L R (L+R)/2 VOCAL CUT
MIX PHASE SHIFTER SURROUND
Lch OUTPUT
Rch INPUT
MIX
Rch OUTPUT
ALC
MIC MIC VOL MIX ECHO MIC VOL ECHO VOL MIX
ALC
MIC
FEEDBACK VOL
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN CONFIGURATION
ECHOVOL
MIC1VOL
AUDSW3
AUDSW2
LPF2OUT
AUDSW5
AUDSW4
DAINTOUT
MIC2VOL
AUDSW1
PS2
PS1
LOUT
ROUT
VCFIL
LIN
42
41
40
39
38
37
36
35
34
33
32
31
30
29
RIN
28
27
26
25
24
DAINTIN
23 D/A
LPF2IN2
LPF2IN1
22
A/D
A/D
A/D
AUDIO SW I/F
PHASE SHIFTER
(L+R) / 2
L
R
STEREO
LPF
16kSRAM ECHO VOL ECHO F.B(-2dB)
MAIN LOGIC
MIC VOL MCLK LPF ALC 1 2 3 4 5 6 7 ALC 8 9 10 11 12 13 14 15 16 17 18 A/D 1/2Vcc 19 GND Vcc 21 20 MIC VOL
MIC1NFIN
MCLKCONT
ADINTOUT
MIC2NFIN
ADCONT
ALC1
ALC2
LPF1OUT
MIC1OUT
MIC2OUT
MIC1VOLIN
MITSUBISHI ELECTRIC
MIC2VOLIN
ADINTIN
LPF1IN1
LPF1IN2
MICOUT
MIC1IN
MIC2IN
GND
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VCC
REF
DACONT
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN DESCRIPTION
Pin No.
Symbol MCLKCONT MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 MIC2NFIN MIC2OUT MIC2VOLIN MICOUT LPF1IN1 LPF1IN2 LPF1OUT ADINTOUT ADINTIN ADCONT REF GND VCC
Nam
Clock control Microphone 1 input ALC1 control Microphone 1 negative feedback input Microphone 1 input Microphone 1 volume input Microphone 2 input ALC2 control Microphone 2 negative feedback input Microphone 2 input Microphone 2 volume input Microphone output Low pass filter 1 input 1 Low pass filter 1 input 2 Low pass filter 1output A/D integrator output A/D integrator input A/D control Reference power output Ground Power supply
I/O -- external R
I
Function
Controls built-in clock generation circuit with To connect MIC1 To connect ALC attack / recovery time To connect low cut-off frequency of MIC1 amplifier setting capacitor To connect capacitor to reduce noise generated at time of volume change
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
-- setting capacitor
I O I I
To connect MIC2 To connect ALC attack/recovery time To connect low cut-off frequency of MIC2 amplifier setting capacitor To connect capacitor to reduce noise generated at time of volume change
-- setting capacitor
I O I
O Mixing output of MIC1 and MIC2 I I O O I
Pre-filter before A/D convertor for digital delay
Composes D/A conversion integrator with external capacitor To determine adaptive time constant of
-- A/D convertor with ADM system
-- To connect 1/2 Vcc output and filter capacitor -- --
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
Pin No.
Symbol DACONT DAINTIN DAINTOUT LPF2IN1 LPF2IN2 LPF2OUT RIN LIN VCFIL ROUT LOU PS1 PS2 AUDSW1 AUDSW2 AUDSW3 AUDSW5 AUDSW4 ECHOVOL MIC2VOL MIC1VOL
Nam
D/A control D/A integrator input D/A integrator output
Low pass filter 2 input 1 Low pass filter 2 input 2 Low pass filter 2 output
I/O
Function
To determine adaptive time constant of
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
-- D/A convertor with ADM system
I O I I O I I
Composes D/A conversion integrator with external capacitor
Post-filter after D/A conversion for digital delay
Rch line input Lch line input Vocal cut filter Rch output Lch output Phase shift input 1 Phase shift input 2
Rch line input Lch line input
-- Processes frequencies lower than the vocal band
O O I
Rch mixing output Lch mixing output
Determines a constant at time of phase shift
I
Source selector and Auto vocal support sw
I
Source selector and Auto vocal support sw : audio signal is selected by setting these switches to L or H
Auto vocal support sw Phase shift sw Echo effect volume control MIC2 volume control MIC1 volume control
I I I I I
Auto vocal support sw : ON set to H,OFF set to L Phase shift sw : ON set to H,OFF set to L Echo effect volume control by DC voltage MIC2 volume control by DC voltage MIC1 volume control by DC voltage
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
ELECTRICAL CHARACTERISTICS
( Vcc=5V,f=1kHz,vi=100mVrms,Ta=25C Unless otherwise noted )
Limits Symbol
TOTAL Icc
Parameter
Circuit current
Test conditions
No signal provided
Min --
Typ 35 47
Max
Unit mA dB
Gvo THD1 THD2 Microphone amplifier
Amplifier gain Distortion Distortion
Vo = -17dBV Vo = -17dBV,with ALC not operated Vi= -37dBV,with ALC operated measurement : +2dBV C=4.7F C=4.7F
-- -- 0 25 1.0 1.2 -- 5
0.1 3.0 +2 40 1.5 1.3 -68 10 0 -72 0.15 1.6 -96 0 -72 0.15 1.4 -96 ( 5
0.5 6.0 +4 55 2.0 -- -57 20 +3 -67 0.30 -- -90 +3 -67 0.30 -- -90 /
% % dBV msec sec Vrms dBV K dB dBV % Vrms dBV dB dBV % Vrms dBV 14 )
VoALC ALC operating voltage TALCAT ALC attack time TALCRE ALC recovery time
VoMAX Maximum output voltage THD=10% No Zi Gv Output noise voltage Input impedance I/O voltage gain Volume max Volume min Volume max THD=10% JIS - A Volume max Volume min Volume max Gv=47dB,f=100 to 5KHz
-3 -- -- 1.3 -- -3 -- -- 1.1 --
ATTmax Maximum attenuation Mic volume THD ViMAX No Echo effect / Echo feed back volume Gv Distortion Maximum input voltage Output noise voltage I/O voltage gain
ATTmax Maximum attenuation THD Distortion
VoMAX Maximum output voltage THD=10% No Output noise voltage JIS - A MITSUBISHI ELECTRIC
L i is n ar P RicE; Thestric limits e
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tt al s I M I Na fine subjec ot
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
Test conditions Min -3 1.1 Limits Typ 0 1.4
50
Max +3 --
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
Parameter
I/O voltage gain
Symbol
Digital echo Gv
Unit dB Vrms
VoMAX Maximum output voltage THD=10%
Td
Delay Time
Sets Delay time with microcomputer.
147.4
196.6 245.7 msec
Digital echo
THD
Distortion
Td=196.6mS,30KHzLPF
2.0
2.0
4.0
%
No
Output noise voltage
Vi=0mVrms,JIS - A Td=196.6msec,Rg=620
-67
-82
--
dBV
Gv THD
I/O voltage gain Distortion 30KHzLPF
-3 -- 1.1 -90
0 0.02 1.7 -95 -70
+3 0.04 -- --
dB % Vrms dBV dB
VoMAX Maximum output voltage THD=10% LINE No CS Zi Grej Output noise voltage Channel separation Input impedance Vocal removal ratio Vocal cut JIS - A, MIC1VOLandMIC2VOL=0.0V Lin=400Hz,Rout JIS - A
10 14
20 18
30 --
KHz dB
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
ABSOLUTE MAXIMUM RATINGS
Symbol Vcc Vi Pd Topr Tstg
Name Supply voltage Circuit current Input Voltage Operating temperature Storage temperature
Test conditions
Ratings 6.0 -0.3 ~ Vcc+0.3 1.1 -20 ~ +75 -40 ~ +125
Units V V W C C
RECOMMENDED OPERATING CONDITION
Limits Symbol VDD VIL VIH Parameter
Digital supply voltage
Test conditions Min 4.5 0 0.7VDD Typ 5 -- -- Max 5.5 0.3VDD VDD
Units V V V
L input level H input level
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
FUNCTION CONTROL
* SOURCE SELECTOR SWITCH Control Data AUDSW3 L L L L H H AUDSW2 AUDSW1 L L L H H L H H L H L H Source select
Lch, monaural Rch, monaural (L+R) / 2 Vocal cut Stereo TEST MODE
* AUTO VOCAL SUPPORT SWITCH Control Data AUTO VOCAL SUPPORT AUDSW4 Auto vocal support SW OFF L ON H * Microphone volume attenuation DC voltage control (V) MIC2VOL(pin41) Attenuation [dB] MIC1VOL(pin42)
* PHASE SHIFTER SURROUND CONTROL Control Data PHASE SHIFTER SURROUND AUDSW5 Surround SW OFF L ON H * Echo effect volume attenuation DC voltage control (V) Attenuation [dB] ECHOVOL(pin40)
5.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.0
* Digital echo output control Control Data MIC2VOL MIC1VOL
-- --
0 -3 -6 -9 -12 -15 -18 -
5.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.0
Note:
+3 0 -3 -6 -9 -12 -15 -
When the MIC1VOL and MIC2VOL are
Digital echo output control
ON OFF
--
at the same time, the Digital echo
output control will automatically be the Digital echo output off mode. Please use the Digital echo output control for Mic sw. MITSUBISHI ELECTRIC
0.0 (V)
0.0 (V)
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
FUNCTION DESCRIPTION
(1) AUTO RESET Settings are reset automatically when the IC is powered up. The reset state is automatically canceled approximately 150msec after powering up(Vcc=5V and the capacitor connected to pin C=100F). By auto reset, operation mode setting become as follows. *Source Selector : stereo *Phase Shifter Surround Control : OFF *Echo effect Volume : --
*Auto Vocal support Switch : OFF *Microphone Volume Attenuation : -10dB
(2) AUTO MUTE FUNCTION The IC carries out auto mute function at the time of powering up in order to suppress shock noise that the digital delay may produce. *At power up
Reset Time
Mute time (400msec)
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERIES
KARAOKE
(3) Clock oscillator circuit This IC incorporates a current control type clock oscillator circuit in it, thus providing circuit configuration just by connecting an Rc for current control pin 1 (MCLKCONT). Fully internal clock supply prevents occurrence of undesired radiation without affecting any external circuit. The oscillator frequency fck is following. fck = 4 MHz(Rc=22K )
Note: The delay time (Td) for echo is determined by the clock frequency (fck).
Rc
DC Current 1 Clock oscillator circuit
Clock frequency:fck
fck = 4 MHz(Rc = 22K ) Delay time = 196.6msec Delay time = 1/fckX48XN (N = the number of memory bits = 16384
(4) Microphone amplifier The gain(Gv) and low cut-off frequency(fcl) of microphone amplifier are expressed as follows. 1 R1+1.5K+334K fcl= Gv=20log* 2*(R1+1.5K)*C1 R1+1.5K Gv(max)=47dB,fcl=225Hz R1=0 ,C1=0.47F Assuming Gv=37dB, fcl=220Hz,for instance, the constants take the following values. R1=3.3K ,C1=0.15F MIC 10k 1.5k
4 5
REF 0.22F
2
10k (typ)
334k
R1 C1
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERIES
KARAOKE
(5)ALC level diagram
Vo(dBV) ALC OPERATING VOLTAGE SETTING RANGE 10 +2 0 -10 -20 MICROPHONE AMPLIFIER GAIN SETTIG=47dB -30 -70 -60 -50 -40 -30 -20 -10 Vi(dBV)
(6) Input and output LPF for the digital echo The input and output LPF for the digital echo are configured as shown. figure below. C2:1000pF C1:4700pF
13 14 15
24k 24k Input 24k Output
The accuracy of the internal resistance of the IC is approximately 30% Cut-off frequency(fc) is given as follows. fc= 2 X 24k 1 X C1 X C2
=
2 X 24k
1 X 4700pF X 1000pF
3.1KHz
Quality factor (Q) is given by the following equation for long echo. Q= 1 3 C1 C2
0.72 (Figure of 0.7 is recommended)
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERIES
KARAOKE
(7) Auto vocal support If you can not continue sing a song, the reference vocal from the source will support you automatically.
Signal Detection
Source selector mode Stereo Rch monaural (L+R)/2 same as above
On
Lch monaural
vocal cut
Off
(L+R)/2
(L+R)/2
The timing of microphone input signal detection Reference level (REF+20mV)
Microphone input
level output
release time 1.5s
attack time 0s
microphone signal detection
On
OFF
On
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERIES
KARAOKE
(8) Vocal cut support The sound components of the same phase and same sound volume in the L and R channels are attenuated. This made also allows components with lower frequency than the vocal band to pass through the filter, to compensate insufficient low-frequency sound. Lch INPUT
vocal cut block
Rch INPUT 30 C 0.15
OUTPUT
=53.0Hz 2CR LPF is formed by the internal R (20k ) and the external C, where C=0.15F , cut off frequency is 53Hz.
fvc=
1
(9)Following is the phase shifter block, which makes phase surround effect.
Lch INPUT
Phase Shifter Surround
33 C(external)=0.022F 34
Lch OUTPUT
Rch INPUT Rch OUTPUT
Source selector L R (L+R)/2 Vocal cut Stereo
Surround
Simulated Stereo
Stereo Surround
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MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50
SERIES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
APPLICATION EXAMPLE
ECHOVOL
AUDSW5
AUDSW4
AUDSW2
MIC1VOL
MIC2VOL
AUDSW3
AUDSW1
LOUT ROUT
0.022 1 1
LIN RIN
1 0.001 0.0047 0.068
0.15 1
0.1
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
A/D
A/D
A/D
AUDIO SW I/F
PHASE SHIFTER
(L+R) / 2
L
R
STEREO
LPF
D/A
16kSRAM ECHO VOL ECHO F.B(-2dB)
MAIN LOGIC
MIC VOL ALC 1 22 k 4.7 0.22 1.0 0.1 0.22 4.7 0.1 1.0 0.022 0.001 0.0047 0.068 0.1 2 3 4 5 6 7 ALC 8 9 10 11 12 13 14 15 16 17 18 MIC VOL A/D
MCLK
LPF
1/2Vcc 19 GND Vcc 21 20
100 100 0.1
10 k
10 k
MIC1IN
MIC2IN
Unit R: C:F
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