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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
DESCRIPTION
The M65853 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
* * * * * *
* * Built-in automatic reset circuit activated with power on * 5V single power supply
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, echo effect volume and echo feedback volume are included Stereo microphone-line mixing amplifiers Karaoke entertainment functions such as vocal cut and automatic vocal support system Built-in current-control oscillation circuit
PIN CONFIGURATION
MCLKCONT VALC MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 1 2 3 4 5 6 7 8 9 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 MIC SW DATA CLOCK LATCH PS2 PS1 LOU T ROUT VCFIL LIN1 RIN1 LIN2 RIN2 VOL IN LPF2OUT LPF2IN2 LPF2IN1 DAINTOUT DAINTIN DACONT VCC
M65853FP
MIC2NFIN 10 MIC2OUT MIC2VOLIN MICOUT 11 12 13
LPF1IN1 14 LPF1IN2 LPF1OUT ADINTOUT 15 16 17 18
RECOMMENDED OPERATING CONDITION
* Supply voltage range * * * * * Vcc = 4.5 ~ 5.5V Rated supply voltage * * * * * Vcc = 5V
ADINTIN
ADCONT 19 REF 20 GND 21
SYSTEM CONFIGURATION
Lch1 INPUT Lch2IN PUT Rch1 INPUT Rch2IN PUT
SOURCE SELECTOR L R (L+R)/2 VOCAL CUT
MIX PHASE SHIFTER SURROUND
Lch OUTPUT
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
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN CONFIGURATION
DAINTOUT
LPF2OUT
LPF2IN2
LOUT
ROUT
VCFIL
RIN1
VOL IN
RIN2
LPF2IN1
CLOCK
DAINTIN
LATCH
DATA
DACONT
23 1/2Vcc 20
MIC SW
PS1
42
41
40
39
38
37
36
35
34
LIN1
PS2
33
LIN2
32
31
30
29
28
27
26
25
24
22 Vcc
-COM
I/F
PHASE SHIFTER SURROUND
LPF
(L+R) / 2 L R STEREO
D/A
MIC SW
ECHO VOL
ECHO F.BVOL
16kbit SRAM
MAIN LOGIC
MCLK ALC
MIC VOL ALC
MIC VOL LPF A/D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
GND 21
LPF1IN1
MIC1VOLIN
MCLKCONT
MIC2VOLIN
LPF1IN2
MICOUT
MIC1IN
MIC2IN
ADINTOUT
VALC
MIC1NFIN
MIC2NFIN
LPF1OUT
ADCONT
ALC2
ADINTIN
ALC1
MIC1OUT
MITSUBISHI ELECTRIC
MIC2OUT
(
2
GND
REF
VCC
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN DESCRIPTION
Pin No.
Symbol MCLKCONT VALC MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 MIC2NFIN MIC2OUT MIC2VOLIN MICOUT LPF1IN1 LPF1IN2 LPF1OUT ADINTOUT ADINTIN ADCONT REF GND
Nam
Clock control ALC operating voltage setting terminal Microphone 1 input ALC1 control Microphone 1 negative feedback input Microphone 1 output 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 1 output A/D integrator output A/D integrator input A/D control Reference power output Ground
I/O --
Function
Controls built-in clock generation circuit with external R To set ALC operating voltage according
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
-- to applied voltage
I
To connect MIC1 To connect ALC1 attack / recovery time
-- setting capacitor
I O I I
To connect low cut-off frequency of MIC1 amplifier setting capacitor To connect capacitor to reduce noise generated at time of volume change
To connect MIC2 To connect ALC2 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 I 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
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
Pin No.
Symbol VCC DACONT DAINTIN DAINTOUT LPF2IN1 LPF2IN2 LPF2OUT VOLIN RIN2 LIN2 RIN1 LIN1 VCFIL ROUT LOU PS1 PS2 LATCH CLOCK DATA MIC SW
Nam
Power supply 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
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 I I I
To determine adaptive time constant of
Composes D/A conversion integrator with external capacitor
Post-filter after D/A convertor for digital delay
Echo effect / Echo feed back volume input Rch line input2 Lch line input2 Rch line input1 Lch line input1 Vocal cut filter Rch output Lch output Phase shift input 1 Phase shift input 2 LATCH CLOCK DATA Microphone SW
To connect capacitor to reduce noise generated at time of volume change Rch line input2 Lch line input2 Rch line input 1 Lch line input1
-- 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 I I I
Latch input via serial bus Clock input via serial bus Data input via serial bus L: MIC OFF H: MIC ON
I
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
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 : -10 to +3dBV C=4.7F C=4.7F
-- -- -3 25 1.0 1.3 -- 5
0.1 3.0 0 40 1.5 1.4 -68 10 0 -72 0.15 1.7 -96 0 -72 0.15 1.4 -96 (
0.5 6.0 +3 55 2.0 -- -57 20 +3 -67 0.30 -- -90 +3 -67 0.30 -- -90
% % dB msec sec Vrms dBV K dB dBV % Vrms dBV dB dBV % Vrms dBV
ALC operating voltage VoALC measurement error 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 -- -- 1.4 -- -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
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
Test conditions Limits Typ 0 1.4 98.3 131.1
50
Max +3 --
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
Parameter
I/O voltage gain
Symbol
Digital echo Gv
Min -3 1.1
Unit dB Vrms msec msec msec msec
VoMAX Maximum output voltage THD=10%
Td
Delay Time
Sets Delay time with microcomputer.
147.5 196.6
Td=98.3mS,30KHzLPF Digital echo Td=131.1mS,30KHzLPF THD Distortion Td=147.5mS,30KHzLPF Td=196.6mS,30KHzLPF Vi=0mVrms,JIS - A Td=98.3msec,Rg=620 Vi=0mVrms,JIS - A Td=131.1msec,Rg=620 No Output noise voltage Vi=0mVrms,JIS - A Td=147.5msec,Rg=620 Vi=0mVrms,JIS - A Td=196.6msec,Rg=620 Gv THD I/O voltage gain Distortion 30KHzLPF
1.0 1.5 1.5 2.0 -72 -70 -70 -67 -3 -- 1.1 -90
1.0 1.5 1.5 2.0 -87 -85 -85 -82 0 0.02 1.7 -95 -70
2.0 3.0 3.0 4.0 -- -- -- -- +3 0.04 -- --
% % % % dBV dBV dBV dBV 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,MIC SW OFF Lin=400Hz,Rout JIS - A
10 14
20 18
30 --
KHz dB
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
ABSOLUTE MAXIMUM
Symbol Vcc Vi Pd Topr Tstg
Nam 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 Vcc VIL VIH Parameter Supply voltage L input level H input level Test conditions Min 4.5 0 0.7VDD Typ 5 -- -- Max 5.5 0.3VDD VDD V V V Units
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
FUNCTION DESCRIPTION
OPERATION MODE Operating modes can be set with serial data 16-bits entered at the timing given below. DATA(pin39) is taken inside at the rising edge of CLOCK(pin38) and the last-packed 16-bits are latched at the raising edge of LATCH(pin37).
37
LATCH CLOCK DATA
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
38
39
time
DATA FUNCTION D0 D1 D2 D3 D4 Source D5 selector D6 D7 Phase shifter D8 surround Digital echo
Control description
DATA FUNCTION D0 D1 Echo D2 effect Volume D3
Control description
Creates four kinds of delay signals between 98.3msec and 196.6msec.
Sets volume attenuation in 8 steps between +3dB and - .
Desired audio source operation to each "karaoke" software can be selected by the Source selector. 5 kinds Surround is formed with phase shifter to increase the ambience of sound even when karaoke is used.
D4 Echo Feed D5 Back Volume D6 D7 D0="H" MIC1 D8 Volume D9 D10 D11 D12 D13 D14 D15 ADDRESS MIC2Vol ume
Sets volume attenuation in 5 steps between -2dB and - .
D0="L"
If you are in discomfort from unknown Auto vocal song, the vocal of the singer can be output support you. D9 support ON / OFF Selector switch for turning on/off of auto vocal support. Line input D10 selector MIC SW D11 ON / OFF D12,D13 D14 D15 Selector switch for changing line input of Lch and Rch. Selector switch for turning on/off of microphone signal mixing. TEST mode
Sets volume attenuation in 8 steps between 0dB and - .
Sets volume attenuation in 8 steps between 0dB and - .
Data is taken inside ADDRESS D14=[L],D15=[H],and others cancel.
Data is taken inside D14=[L],D15=[H],and others cancel.
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
FUNCTION CONTROL
* DELAY TIME CONTROL Control Data D0 D3 D2 D1 L L L H H H L -- 147.5msec 196.6msec Delay off mode L L H H H-- L --
(L+R) / 2 Vocal cut Stereo
* SOURCE SELECTOR Control Data D0 D6 D5 D4 L L L L L H Source select
Lch, monaural Rch, monaural
Delay time 98.3msec 131.1msec
L
--
H--
H-- H H
H--
* PHASE SHIFTER SURROUND CONTROL Control Data PHASE SHIFTER SURROUND D0 D8 D7 L L L H H L H
ON MID HIGH Surround SW OFF Effect
* AUTO VOCAL SUPPORT SWITCH Control Data Auto vocal support SW D0 D9 L L
OFF ON
L H
LOW
H
* SELECT LINE IN SWITCH Control SELECT Data LINE IN SW D0 D10 L L H
ON OFF
Remar k
* MICROPHONE MIXING SWITCH Control Data Remar MIC SW k D0 D11 L L H
OFF ON Microphone mixing OFF Microphone mixing ON
Select to LIN1/RIN1 Select to LIN2/RIN2
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
VOLUME CONTROL
* Echo effect volume attenuation Control Data D0 D3 D2 D1 L L L L H H H H H L L H H L H L H L L H H L H L H Attenuation
(dB)
* Echo FEEDBACK volume attenuation Control Data D0 D6 D5 D4 L L H L L H L L H H L L H L H L Attenuation
(dB)
+3 0 -3 -6 -9 -12 -15 -
-2 -3 -5 -7 -
* Microphone volume attenuation Control Data D9 D8 D7 MIC1 Volume Attenuation D0 (dB) D12 D11D10 MIC2 Volume L L L L H H H H H L L H H L H L H L L H H L H L H
* ADDRESS CONTROL Control Data D0 D15D14 L L L,H H H L H
Data take inside Data Cancel
ADDRESS
0 -3 -6 -9 -12 -15 -18 -
L
Data Cancel
H
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
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. *Delay Time Control : 98.3msec *Source Selector : stereo *Phase Shifter Surround Control : OFF *Auto Vocal support Switch : OFF *Select Line IN Switch LIN1,RIN1 *Microphone Mixing Switch : OFF *Echo Feed back Volume : *Echo effect Volume : *Microphone Volume Attenuation : -10dB
(2) AUTO MUTE FUNCTION The IC carries out auto mute function at the time of powering up, delay time setting change, in order to suppress shock noise that the digital delay may produce. *At power up
Reset Time
Mute time (400msec)
*At delay time setting change Delay signal before change
Delay signal after change
Mute time (400msec)
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(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 )
Rc
DC Current 1 Clock oscillator circuit
Clock frequency:fck
(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
5 6
REF 0.22F
3
10k
(typ)
334k
R1 C1
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(5)ALC level diagram
Vo(dBV) ALC OPERATING VOLTAGE SETTING RANGE 10 +3 0 -10 -20 MICROPHONE AMPLIFIER GAIN SETTIG=47dB -30 -70 -60 -50 -40 -30 -20 -10 Vi(dBV)
(6)ALC operating voltage setting ALC operating voltage can be set at a desired value between -10 and +3dBV by varying the DC voltage applied to pin 35 (ALC operating voltage setting terminal). (Setting method)
1
2.5V( 2 Vcc) INTERNAL DC BIAS ONE SIDE PEAK VOLTAGE,Vpo VOLTAGE APPLIED TO 35 PIN,VALC VALC= OV
1 2
Vcc-Vpo
Vcc 51k
To set ALC operating voltage at -5dB(Vcc=5V) -5dBV=0.56Vrms=1.59Vp-p=0.8Vp-o VALC=2.5-0.8=1.7V Since the input impedance at pin 35 is high at 1M or more, it is possible to provide ALC operating voltage by dividing resistance. When Vcc=5V ALC operating voltage (dBV) +3 0 -2 -4 -6 -8 -10 Voltage applied to pin 35 VALC(V) 0.50 1.09 1.38 1.61 1.79 1.94 2.05
MITSUBISHI ELECTRIC
35 R
0.01
Resistance R( 5.6k 15k 20k 24k 27k 33k 36k
)
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MITSUBISHI SOUND PROCESSOR ICs
M65853FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(7) 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
14 15 16
50
SERI ES
KARAOKE
24k 24k Input Output 24k
The accuracy of the internal resistance of the IC is approximately 30% Cut-off frequency(fc) is given as follows. fc= 1 2X24k X C1XC2
=
1 2X24k X 4700pFX1000pF
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
M65853FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERI ES
KARAOKE
(8) 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
M65853FP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
50
SERI ES
KARAOKE
(9) 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 33 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
(10)Following is the phase shifter block, which makes phase surround effect.
Lch INPUT
Phase Shifter Surround
36 C(external)=0.022F 37
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
M65853FP
50
SERI ES
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
APPLICATION EXAMPLE
MIC SW
CLOCK
LATCH
DATA
ROUT
LOUT
RIN1
RIN2
LIN1
LIN2
0.0047 1 1 1 0.022 1 1 0.15 1 1 1 1 0.22 0.001 0.068
Vcc
0.1 100 0.1
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22 Vcc
-COM
I/F
PHASE SHIFTER SURROUND
LPF
(L+R) / 2 L R STEREO
D/A
MIC SW
ECHO VOL
ECHO F.BVOL
16kbit SRAM
MAIN LOGIC
MCLK ALC
MIC VOL ALC
MIC VOL LPF A/D 1/2Vcc 19 20 GND 21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
22 k 4.7 1 0.1 0.22 4.7 1 0.1 0.022 0.001 0.0047 0.068 0.1
100
Vcc Vcc
0.22
10 k 51k
10 k
MIC1IN
MIC2IN Unit R : C:F
0.01
22k
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