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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
SINGLE CHIP KARAOKE PROCESSOR
DESCRIPTION
*The M65851FP is an LSI that not only contains circuits (echo and key control) necessary for Karaoke but also improves other peripheral functions. *This IC has full peripheral functions including vocal cut, phase shifter, equalizer,detection of intervals between songs, digital surround, and Karaoke scoring. It is therefore suitable not only for dedicated Karaoke units but also for radio cassette tape recorders, TV,VCR,and miniature unit audio systems with Karaoke function.
FEATURES
*Capable of composing echo and key control circuits necessary for Karaoke system for Karaoke system with a single chip *Echo circuit is capable of supporting digital surround by adopting 16Kbit RAM built-in digital delay *17steps of -8 to +8 for key control (1step is equivalent to a half tone) *Karaoke entertainment functions such as Karaoke scoring,vocal cut, equalizer, phase shifter, detection of intervals between songs, and magic voice functions *Generation of unnecessary radiation is avoided because clock's built-in current-control oscillation circuit keeps clock effects inside the clock *Built-in automatic reset circuit activated with power turned on *5V single power supply
Outline 80P6N-A
0.8mm pitch QFP (20.0mmx14.0mmx2.8mm)
RECOMMENDED OPERATING CONDITION
Supply voltage range..........................Vcc=4.5~5.5V Rated supply voltage......................................Vcc=5V
SYSTEM CONFIGURATION
Lch INPUT
SOURCE SELECTOR
MIX
R L R+L MIC VOCAL CUT
Lch OUTPUT
KEY CONTROL
PHASE SHIFTER (ON/OFF)
EQ
Rch INPUT
MIX
Rch OUTPUT
SCORE SYSTEM ALC
MUSIC SEARCH
MIC MIC AMP
MIC VOL ECHO/ SURROUND DELAY VOL
MIX
D-65851-65D
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LGAIN MICIN
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
EQLAMPIN1 EQLAMPIN2
50
65 64 63
EQLAMPOUT
SERIES
KARAOKE
VCFIL
EQL1
EQL2
MBPF1 MGAIN
80 79
Gain
78
Gain
77
76
75
74
73
72
71
EQL3
PS1
PS2
LIN
70
69
68
EQL4
PIN CONFIGURATION
RIN
67
66
MBPF2 MBPF3 LBPF1 LBPF2 LBPF3 KSIGIN KCOUT KOLPF2 KOLPF1 KHPF2 KHPF1 KCISIG KILPF1 KILPF2 KADCINTIN
1 2 3 4 5 6 7
Equalizer
MIC L R
LOUT ROUT
KEYCON
Equalizer GND VCC
BPF1 BPF2
VOL
62 EQRAMPOUT
SOURCE SELECTOR
PHASE SHIFTER
61 EQRAMPIN2 60 EQRAMPIN1
SCORE
DELAY
59 EQR4 58 EQR3 57 EQR2
8 9 10 11 12 13 14 15
D.VOL
F.VOL
KADCINTOUT 16 KADCCONT KDACCONT1 KDACCONT2
17 18 19
LPF ADC
KARAOKE SCOREING MCU INTERFACE AUTO RESET
LPF HPF LPF ADC DAC
16Kbit SRAM
16Kbit SRAM
56 EQR1 55 VCC2 54 AGND2 53 DOUT 52 DISIG 51 DIN 50 DILPF1 49 DILPF2 48 DILPF3 47 DADCINTIN 46 DADCINTOUT 45 DADCCONT 44 DDACCONT
LOGIC
KDACINTOUT 20 KDACINTIN REF AGND1 AVCC1
21
22 23 24
DAC
CLOCK TEST VDD GND
26 27 28 29 30 31 32 33 34 35 36 37 38
25
SCORETEST1
SCORETEST2
SCORETEST3
DGND
DATA
STROBE
DOLPF3
MCK
CLOCK
TEST1
W/RSEL
TEST2
VDD
REQ
MITSUBISHI ELECTRIC
DOLPF2
KCSEL
REF GND VCC
43 DDACINTIN 42 DDACINTOUT
LPF
39 40
41 DOLPF1
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
PIN DESCRIPTION
Pin No.
Symbol MBPF2 MBPF3 LBPF1 LBPF2 LBPF3 KSIGIN KCOUT KOLPF2 KOLPF1 KHPF2 KHPF1 KCISIG KILPF1 KILPF2 KADCINTIN KADCINTOUT KADCCONT KDACCONT1 KDACCONT2
Name
Microphone band pass filter2 Microphone band pass filter3 Line band pass filter1 Line band pass filter2 Line band pass filter3 Key controled signal input Key control output Low-pass filter 2 output Low-pass filter 1 input High-pass filter 2 output High-pass filter 1 input Key control signal output Low-pass filter 1 input Low-pass filter 2output A/D integrator input A/D integrator output A/D control D/A control 1 D/A control 2 D/A integrator
I/O
I O
Function
Composes band pass filter for Karaoke scoring (For microphone signal)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
I O I O O
Composes band pass filter for Karaoke scoring (For reference signal)
Key controled signal input Key contorol signal output
Post-filter after D/A conversion for key control
I O
High-pass passage filter for high-pass through
I
I
Output by selecting from L,L+R/2,L-R,and microphone input Pre-filter after D/A conversion for key control
O I O
Composes an A/D conversion integrator with external C
O
Composes a D/A conversion integrator with external C
KDACINTOUT output
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Pin No.
Symbol KDACINTIN REF AGND1 VCC1 KCSEL
Name
D/A integrator input
I/O
I
Function
Composes a D/A conversion integrator with external C Analog reference voltage = 1/2Vcc .
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Reference
Analog GND1 Analog power supply1
-
.
5V Controls the Key selector key control mode or not
Key control selector I:CMOS20k
I:CMOS20k
SCORETEST1 Score test selector1 SCORETEST2
Score test selector ; normally set to L level Score test selector2 I:CMOS20k
O:CMOS
SCORETEST3 Score test selector3 MCK VDD DGND DATA CLOCK STROBE REQ W/RSEL TEST1 TEST2 DOLPF3 DOLPF2
Clock control Digital Power supply Digital GND Serial data Clock control Strobe Request Write-Read selector Test signal control input1 Test signal control input2 Low-pass filter 3 output Low-pass filter 2 input
Score test selector ; normally no connect External R controls built-in clock generator circuit
-
I:CMOSShumitt 50k O:CMOS I:CMOSShumitt 50k Micro computer I:CMOSShumitt interface 50k O:CMOS I:CMOSShumitt 50k I:CMOS20k
Serial data input/output Shift clock output
Strobe output Request output Control the selector write/read
Test input pin ; normally set to L
I:CMOS20k O I
Post-filter after D/A conversion for digital delay
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Pin No.
Symbol DOLPF1
Name
Low-pass filter 1 input D/A integrator D/A integrator input D/A control A/D control A/D integrator output A/D integrator input Low-pass filter 3 output Low-pass filter 2 input Low-pass filter 1 input Delay select signal input Delay select signal output Delay signal output Analog GND2 Analog Power supply2 Rch equalizer adjustment C1 Rch equalizer adjustment C2 Rch equalizer adjustment C3 Rch equalizer adjustment C4 Rch equalizer input 1
I/O O I
Function
Post-filter after D/A conversion for digital delay
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
DDACINTOUT output DDACINTIN DDACCONT DADCCONT DADCINTOUT DADCINTIN DILPF3 DILPF2 DILPF1 DIN DISIG DOUT AGND2 VCC2 EQR1 EQR2 EQR3 EQR4 EQRAMPIN1
Composes a D/A conversion integrator with external
O I O I
Composes a A/D conversion integrator with external
Pre-filter before A/D conversion for digital delay
I
Outputs after selection of echo/surround input signal
O O
Delay signal output
I
Composes external C for the adjustment of Rch equalizer characteristics (bass and treble)
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Pin No.
Symbol EQRAMPIN2 EQRAMPOUT ROUT LOUT EQLAMPOUT EQLAMPIN2 EQLAMPIN1 EQL4 EQL3 EQL2 EQL1 PS2 PS1 RIN LIN VCFIL MICIN LGAIN MGAIN MBPF1
Name
Rch equalizer input 2 Rch equalizer output Rch output Lch output Lch equalizer output Lch equalizer input 2 Lch equalizer input 1 Lch equalizer adjustment C4 Lch equalizer adjustment C3 Lch equalizer adjustment C2 Lch equalizer adjustment C1 Phase shift input 2 Phase shift input 1 Rch line input Lch line input Vocal cut filter Microphone input Line input gain control Microphone input gain control Microphone band pass filter2
I/O
I O O O O I I
Function
Composes external C for the adjustment of Rch equalizer characteristics (bass and treble)
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
Rch mixing output Lch mixing output
I
Composes external C for the adjustment of Lch equalizer characteristics (bass and treble)
Determines a constant at time of phase shift
I I I I I I I
Rch line input Lch line input Processes frequencies lower than the vocal band Microphone input Set gain for the no music detection Set gain for the microphone detection Composes band pass filter for Karaoke scoring (For microphone signal)
-
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
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+0.3 815 -20~+75 -40~+125 Units V V W C C
RECOMMENDED OPERATING CONDITION Limits Symbol Parameter
Analog supply voltage Digital supply voltage Analog-Digital voltage margin
25 26 27 28 37 38
Test conditions Min Typ 5 5 0 Max 5.5 5.5 0.3 0.3VDD 0.8 VDD VDD
Units
VCC VDD
VCC-VDD
4.5 4.5 -0.3
pin
V V V V V V V
0 0 0.7VDD VDD-1
VIL
L input level
32 33 34 36 pin 25 26 27 28
VIH
37 38
pin
H input level
32 33 34 36 pin
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
ELECTRICAL CHARACTERISTICS
(Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25C Unless otherwise noted)
Limits Symbol Parameter Test conditions Min Icc fck
TOTAL
Unit Typ 60 8 20 50 -20 34 0 1.3 - 80 1.0 -60 10.2 15.4 20.5 28.7 49.2 98.3 131 148 197 Max 90 9.2 40 100 -10 +3 3 - 65 -40 16.2 22.4 27.5 37.7 58.2 110.3 146 168 217 msec mA MHz k k mA mA dB % dBV Vrms dB
Circuit current Clock frequency
No signal provided
25 6.8
25 26 27 28
RID
Pulldown resistance
"H"Output current "L"Output current
37 38
pin
10 25 20 -3 0.7 4.2 8.4 13.5 19.7 40.2 86.3 116 128 177
32 33 34 36 pin 32 35 pin 32 35 pin
IOH IOL Gv
KEY CONTROL
VOH=4.0V VOL=1.0V
Gain between input and output
VOL=0dB
THD No
Vomax VOLATTmax
Output distortion Vo=100mVrms,30kHz L.P.F Output noise voltage Maximum output voltage
Maximum volume attenuation
JIS-A
THD=10% Gain=- Sets 10msec with microcomputer Sets 15msec with microcomputer Sets 20msec with microcomputer Sets 30msec with microcomputer
Digital Delay
Td
Delay time
Sets 50msec with microcomputer Sets 100msec with microcomputer Sets 130msec with microcomputer Sets 150msec with microcomputer Sets 200msec with microcomputer
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
(Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25C Unless otherwise noted)
Limits Symbol Parameter Test conditions Min Gv Gain between input and output VOL=0dB Td=10,15,20msec, 30kHz LPF Td=30msec, 30kHz LPF THD Td=50msec, 30kHz LPF Output distortion Td=100msec, 30kHz LPF Td=150msec, 30kHz LPF Td=200msec, 30kHz LPF
DIGITAL DELAY
Unit Typ 0 0.3 0.5 0.7 1.0 1.5 2.0 0.7 1.0 -92 -80 Max +3 0.6 1.0 1.4 % 2.0 3.0 4.0 Vrms dB
-3
Vomax
Maximum output voltage
30kHz LPF, THD=10% Td=10,15,20,30,50msec, Vi=0mVrms JIS-A
No
Output noise voltage
Td=100msec, Vi=0mVrms JIS-A Td=130msec,150msec Vi=0mVrms ,JIS-A Td=200msec, Vi=0mVrms JIS-A Delay volume Gain=- Feed back volume Gain=-
-87 -85 -82 -60 -60 -3 0 0.05 1.2 1.8 -95
-72 -70 -67 -40 -40 +3 0.1
dBV
Maximum volume VOLATTmax attenuation
dB dB dB % Vrms
Gv
LINE
THD Vomax No
Gain between 30kHz LPF,upon key control input and output through 30kHz LPF,upon key control Output distortion through Maximum 30kHz LPF,THD=10% output voltage upon key control through Output JIS-A,upon key control noise voltage through
-88
dBV
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
(Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25C Unless otherwise noted)
Limits Symbol Parameter Channel separation Input impedance Vocal removal ratio
Maximum bass boost volume Maximum bass cut volume Maximum treble boost volume Maximum treble cut volume
Test conditions Min Typ -70 10 Vocal cut f=100Hz f=100Hz f=10kHz f=10kHz 14 9 -15 9 -15 20 18 12 -12 12 -12 15 -9 Max -50 40 upon key control through Lin=400Hz, Rout JIS-A
Unit
CS
LINE
dB k dB
Zi Grej
EQ;BASS,TREBLE
GBBmax GBCmax GTBmax GTCmax
dB 15 -9
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
FEATURES
M65851FP provides the following functions and can configurate all Karaoke functions with only a single chip. Usable or not
Function
1 Digital echo
Explanation
Built in 16KSRAM Delay time (changeable) 100ms,130ms150ms,200ms Built in 16KSRAM
Key set mode
not key set mode
Notes
2 Digital key control -8 ~ +8
17 steps
At Key set mode Capable of use echo or surround Not key set mode Capable of use both echo and surround
Switch with the Echo
3 Digital Surround Phase shifter surround
Built in 16KSRAM Digital Surround 10ms ~ 50ms 5 kinds Changeable the effect thanks to the external R Bass/Treble -12dB ~ +12dB/2dB 13 steps changeable Provided all multiple voice soft, L,R,(L+R)/2, VOCAL CUT L-R(for Digital Surround) Key control bypass
4
Capable of use both key control and echo
5
Equalizer
Bass; Resonance type Treble ; Filter type
6 Source selector
7 Scoring function Scoring the Mic vocal input 8 Help vocal function 9 Voice key control 10 Music search Others 11
At the mic vocal is nothing , reference vocal is mixed output. Input the mic voice to key control (change voice tone) Detect to line input level MCU Inter face Current control type oscillation circuit Automatic mute Automatic reset MITSUBISHI ELECTRIC
Compare the reference vocal and mic vocal frequency
At Key set mode capable to use voice key control or key control
At music input is nothing ,key control level is reset automatically
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Delay Block
Delay Block provides a delay signal which using digital echo or digital surround. 1.Constitution
4700p 1000p 0.068 0.1 0.1 0.068 4700p 1000p
52
51
50 49 48
47 46 45
44 43 42
41 40 39
DLSW3
INPUT
+
1 2
LPF
FEEDBACK VOLUME
ADC
DLSW2
DAC
LPF
DELAY VOLUME
+
DELAY
+
DLSW1
OUTPUT
16Kbit RAM 2.Function 1 Delay time Capable to set the follow delay time; Mode Echo Surround 2 Switch mode Mode Echo Surround 1 2 DLSW1 ON OFF OFF DLSW2 1 2 1
Echo"1" Set the echo volume using the delay volume(Change the delay signal gain) Echo"2" Set the microphone volume using the delay volume (Change the delay signal+input signal gain)
Delay time 100,130,150,200msec 10,15,20,30,50msec
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Delay signal Mute
DLSW3 ON OFF
MUTE OFF MUTE ON
3 Input/ output LPF Input/output LPF is formed following block. 1000pF 4700pF
50 (41) (40) 49 48 (39)
1 INPUT 2
Input/ output LPF
OUTPUT
Mode Echo Surround
Switch conditions
Cut off frequency 3.0kHz 7.0kHz
1 2
4 Volume Volume Delay volume Feedback volume Mode +6dB ~ -12dB / 3dB step and - 8 level -2dB ~ -6dB / 1dB step and -8dB,-10dB,- 8 level
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Key Control Block
It can be changed the key of KARAOKE accompaniment. And it can change a microphone voice which like a monkey voice. it also can use digital echo block at not key set mode.
1.Key control condition ,key control set mode or not
25
KCSEL L H
Key control condition Key control set mode Not key control set mode
2.Constitution INPUT
10k 2.2 4.7k 0.047 820p 0.068 0.068 0.047 4700p 5.6k 15k 0.068 3.9k 15k 1000p 1000p 2.2 1000p
3300p 10k
OUTPU T
560p
2.7k
25
12
13
14
15 16 17
18 19 20 21
9
8
11
10
7
6
LPF
ADC
DAC
LPF
HPF
KEY CONTROL
VOL
+
16Kbit RAM 3.Function 1 Key change level KEY UP Key change level +8 +7 +6 +5 +4 +3 +2 +1 0 (1step is half tone)
MITSUBISHI ELECTRIC
KEY DOWN -1 -2 -3 -4 -5 -6 -7 -8
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
2 Volume It set the key control signal gain. +4dB~-6dB/2dB step and -10dB, - 8 level 3 Key control level automatic reset When music search detects no signal ,key control level is automatic changed normal (0) level. (Provides ON/OFF switch with MCU interface)
4.Echo Block (using key control block) At not key control set mode,digital echo is able to use ,when the following block using.
INPUT
4700p 24k 2.2 24k 0.068 0.1 24k
1.0
Echo Feed back volume 24k
4700p 24k
OUTPUT
24k 0.1 0.068 24k 24k 1000p 2.2
1000p
25
12
13
14
15 16 17
18 19 20 21
9
8
11
10
7
6
LPF
ADC
DAC
LPF
BUF
DELAY
VOL
+
16Kbit RAM
Delay time Volume level
100msec,130msec,150msec,200msec +4~-6dB/2dB step and -10dB, - 8 level (same as key control volume)
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Phase Shifter Block
Following is the phase shifter block, which makes phase surround effect.
20k Lch INPUT 20k
Phase Shifter
20k 20k Surround SW R(internal)
Lch OUTPUT
Key control block output
73 C(external)=0.022F 72 20k 20k 20k 20k Rch OUTPUT
Rch INPUT
Switch conditions R=13k Surround SW ON R=16k R=20k Surround SW OFF
Surround effect Max Typ Min Nothing
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Equalizer Block
Following is the equalizer block, which can control the both gain bass and treble.
Bass resonance block
Equalizer Block
R2 136k
71
(56)
R1 1.8k
70
(57)
69
(58)
68
(59)
65
(62)
64
(63)
C1 0.022
C2 0.47
C3 0.033
EQOUT
Bass block is resonance type which is used simulated inductor amplifier.Treble block is filter type. These can be set -12dB ~ +12dB/2dB step. Following is a center frequency "fo" ,"Q" (bass resonance block). fo = 1/(2 C1*C2*R1*R2) Q= (C1*R2) / (C2*R1) (Hz)
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Vocal Cut Block
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.
vocal cut block
20k Lch INPUT R 20k
76
20k
20k Vocal cut OUTPUT
vocal cut block
20k C 0.15E 20k
Rch INPUT 20k
76
C 0.15 fvc= 1
2CR LPF is formed by the internal R (20k) and the external C, when Where C=0.15 F , cut off frequency is 53Hz .
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Scoring Function
Scoring function judge the mic vocal input . 1.Scoring output form Mic input is judged from 0 to 99 level.
2.Constitution
Scoring function is constituted following two ways.
Judgment conditions 1 Compare the frequency 2 Vocal level judgment
Function
Compare the frequency reference voice and microphone voice Vocal level judgment (as vocal is bigger than reference level,judgment is good)
Ratio 75% 25%
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
3.Music search Music search is constituted following . 1 Input signal reference level comparison 2 Music detection 3 No music detection
1 Input signal reference level comparison Input signal reference level comparison is comstituted amplifier and level comarison. When input signal is bigger than reference level,level comparison output the pulse which added internal clock.
Input signal
reference level
Clock signal
pulse output (after level detection)
Then reference level can be changed ,thanks to the following internal R2 and external R1 which determine the amplifier gain .
Lch Level comparator
R2=50k
78
Internal resistance precision is about 30%.
R1
Gain Gv = (R1 + R2) / R1
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
2 Music detection To search a music interval, it is necessary to judge if it is a music or not. This judgment is made by monitoring the 20 seconds and counting the pulse signal (after level detection). The pulse signal counts is bigger than fixed counts, it is judged as a music. Pulse counter is reset whenever monitor 20 seconds or judged no music decision.
about 20 sec
pulse output (after level detection) Music decision
3 No music detection After Music decision ( 2 ), no music is judged when no pulse in level detection at 3 seconds.But if there isn't no pulse when monitoring the3 seconds, no music decision counter is reset .
about 3 sec pulse output (after level detection) No music decision
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
4.Signal input circuit Signal input circuit is constituted the following band pass filter, which cuts the input signal to vocal band width. C1=0.15F
80 (3) 1 (4)
C2=1500pF
2 (5)
R2=100k INPUT R1=10k Low level cut off frequency fcl and High level cut off frequency fch is fcl= 1/2C1R1 = 106 Hz and , the gain of amplifier Gv is Gv = R2/R1 = 20 dB. Same as the band pass filter is constituted microphone signal input. fch = 1/2C2R2 = 1.1kHz OUTPUT
Automatic Vocal Support
In case using the Karaoke system , when microphone input level is nothing , then audio source vocal appears and help the microphone songs. (It can set only following conditions , audio source selector sets Lch monaural or vocal cut)
Microphone input level On
Source selector mode Lch monaural (L+R)/2 vocal cut (L+R)/2 others same as microphone input
Off
Changing time from microphone input level changed to source selector changed is following . Attack time (Off On)0 sec Release time (On Off) 1sec or 2 sec
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
The timing of microphone input signal detection
Microphone input
reference level
level output
release time
attack time 0s
microphone signal detection
On
OFF
On
Following is the microphone input signal judgment block , which includes amplifier so reference level can regulate. MIC Level Comparator
R2=50k
79
Internal resistance precision is about 30%.
R1 Gain Gv = (R1 + R2)/R1
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Oscillation Circuit
This IC incorporates a current control type clock oscillator circuit in it, thus providing circuit configuration just by connecting a R for current control pin 29 (CLKCNT). Fully internal clock supply prevents occurrence of undesired radiation without affecting any external circuit. The oscillator frequency fck is following. fck = 8 MHz
Reset
This IC is automatically reset when the power is turned on , and is automatically canceled nearly 120msec later. Function Echo Delay time First set 150msec No changing OFF OFF Stereo(Key control by pass) OFF
Key control Phase shifter Equalizer Source selector Scoring function
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
MCU Interface
1.Constitutions MCU interface is constituted serial bass interface , so the selection, data input or output , is changed by 36 pin input level .
32
DATA
CLOCK
MCU Interface circuit
33
34
35
36
STROBE
REQ W/RSEL
36
W/RSEL
Conditions MCU IC(Data input) MCU
L H
IC MCU (Data output)
2.Data input (1)Data input format DATA CLOCK STROBE
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
(2)Mode creations D0~D1 select the following each block, and D2 ~ D13 create the particular setting. D14,D15 are chip address, so this IC can use only when D14="L"and D15="H".
D0
D1
D2~D13 Echo/Surround mode Key control mode Equalizer/Phase sifter mode Line mixing/Others mode
D14 D15 Chip addles
L L H H
L H L H
L
H
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
1 Echo /Surround mode D0 D1 L L D2
Echo/ Surround
D3
D4
D5
D6
D7
D8
D9 D10 D11 D12 D13 D14 Feed back volume L
D15 H
Echo delay time
Surround delay time
delay volume
Parameter Echo/Surround Switch
D2
D3 D4
D5
D6
D7
Function Echo Surround On not key control set mode sets H level 100msec 130msec 150msec 200msec 10msec 15msec 20msec 30msec 50msec
L H -
L H L H -
L L H H -
H L H L H
L H H L L
L L L H H
Echo delay time
-
Surround delay time
-
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
Function +6dB +3dB 0dB -3dB -6dB -9dB -12dB - -2dB -3dB -4dB -5dB -6dB -8dB -10dB -
50
SERIES
KARAOKE
Parameter
D8
D9 D10 D11 D12 D13
H H
Delay volume
H H L L H H L L -
H L H L H L H L -
H H H H L L L L
H H L L H H L L
H L H L H L H L
H H L L L L -
Feed back volume
-
2 Key control mode D0 D1 L H D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
Delay Delay volume signal select mute
Auto VSC/ Reset VMC
Key change level
Key control volume
L
H
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Parameter Automatic key control reset Key control mode selector
D2
D3
D4
D5 D6
D7
D8
Function automatic reset OFF automatic reset ON VMC mode VSC mode +8 +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 -4 -5 -6 -7 -8
L H -
L H -
H H H H H H H H L L L L L L L L L
H L L L L L L L L L L L L L L L H
L H H H H L L L L L L L H H H H L
L H H L L H H L L L H H L L H H L
L H L H L H L H L H L H L H L H L
Key change level
-
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Parameter
D9
D10 D11
Function +4dB +2dB 0dB -2dB -4dB -6dB -10dB -
H H
Key control volume set (when not key control mode, it use a echo volume)
H H L L H H L L
H L H L H L H L
H H L L L L
Parameter Delay volume selector Delay signal mute
D12 D13
Function Using an echo volume Using a microphone volume Mute OFF Mute ON
L H -
L H
3 Equalizer/Phase shifter mode D0 D1 H L D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 Equalizer bass L H
automatic vocal support
Phase shifter
Equalizer treble
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
D5 Function OFF ON Release time 1sec Release time 2sec OFF Surround effect Minimum Surround effect Typical Surround effect Maximum Equalizer bass mode D10 D11 D12 D13
50
SERIES
KARAOKE
Parameter
D2
D3
D4
L
Automatic vocal support (It can use only echo mode)
L H -
L H L H
L L H H
H -
Phase shifter surround mode
-
Equalizer treble mode D6 D7 D8 D9 Volume(dB) +12 +10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 -12
MITSUBISHI ELECTRIC
Volume(dB) +12 +10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 -12 ( 30 / 36 )
H H H H H H L L L L L L L
H H H L L L L L L L H H H
H L L H H L L L H H L L H
L H L H L H L H L H L H L
H H H H H H L L L L L L L
H H H L L L L L L L H H H
H L L H H L L L H H L L H
L H L H L H L H L H L H L
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
4 Line mixing/Others mode D0 D1 H H D2 D3 Source selector D4 D5
Key control by pass
D6
Key control mixing
D7
D8 D9
D10 D11 D12 D13
Voice key control
D14 D15 L H
Delay mixing
Scoring function
Parameter
D2 L
D3 D4 L L H H L H
D5
D6
Function
Delay block input L-R
L H
L H Stereo
Delay block input (L+R)/2
Source selector
L H H
-
Lch monaural Rch monaural Vocal cut
By pass OFF(Though the key control circuit) By pass ON(By pass the key control circuit)
Key control by pass Key control mixing ON/OFF Selector
-
-
-
Mixing OFF(SSSW10="2") Mixing ON(SSSW10="1")
Relationships source selector and key control by pass mode D2 L L H H D3 L H L H Key control mixing by pass ON Stereo Lch monaural Rch monaural Vocal cut Key control mixing by pass OFF (L+R)/2 Lch monaural Rch monaural Vocal cut
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Parameter Delay signal mixing ON/OFF Selector
D7 L H H
D8
D9
D10 D11 D12 D13
Function Mixing OFF Mixing ON(L,R same phase) Mixing ON(L,R reverse phase) Scoring function OFF Scoring function ON Score output after no music decision Score can output always timing
Internal music detection decides the scoring start/stop timing MCU data decides the scoring start/stop timing
L H
L H
L H
L H H
L H
L H
Scoring function
-
-
Voice key control
-
*
*
Scoring stop Scoring start
-
-
OFF ON
-
* Scoring function start /stop mode 1 Decide the internal music detection (D11="L") 2 Decide the MCU data(D11="H") When D12 is "L" level scoring is stopping ,and change "H" level, scoring is start until D12 changes "L"level.
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
3.Data output(Score result output) (1)Internal music detection decides the scoring output timing When Karaoke song is over and then music detection judgment the no music detection, scoring is over and output the "H" pulse to REQ. After REQ is "H" level and then W/RSEL changes from "L" to "H",this IC changes a output mode and it can output the score result.
Music interval decision Line input Music decision
REQ
(output)
W/RSEL
(input)
CLOCK
(input)
DATA
(output)
D0
D1
D2
D13 D14 D15
(2)MCU data decides the scoring result data output timing W/RSEL changes from"L"to "H",so this IC changes output mode ,and then score result data can output the same period of the clock .
Line input Music decision
W/RSEL
(input)
CLOCK
(input)
DATA
(output)
D0
D1
D2
D13 D14
D15
(3)Data format D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 Score result output (binary output)
(LSB)
Music interval (MSB) decision
D8 : Music interval decision music decision="H", music interval decision="L" D9~D15 : Score result output D9 D10 D11 D12 D13 D14 D15 an exampleA@78 points H L L H H H L
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Caution
1.Input/output signal level When using phase shifter, echo mixing and equalizer ,this IC is limited the following functions.So,please determine the revel of the each functions.
Input base level
Equalizer gain mode
Head room
S/N 78.5dB 75dB 75dB 69dB
150mVrms 100mVrms 100mVrms 50mVrms
0dB +6dB +12dB +12dB
10.6dB 8.1dB 2.1dB 8.1dB
2.Improvement of head room As stated above, equalizer gain level is bigger, head room becomes also nallow. So It can be Improvement that latest opeamp which using equalizer use external opeamp.
EQIN
Equalizer
Bass 136k 71
(56)
Treble
1.8k 70
(57)
69
(58)
68
(59)
67
(60)
66
(61)
65
(62)
64
(63)
0.033 0.022
Analog high voltage Vcc2
0.47
1.0
OUTPUT
150k
M5218AP Vcc2 2
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
50
SERIES
KARAOKE
Following the relations supply voltage, input signal level ,head room and S/N. (external opamp ;M5218AP)
Vcc2
Input level
Equalizer gain level
Head room
S/N 78.5dB 78.5dB 75dB 75dB 78.5dB 78.5dB 75dB 75dB 78.5dB 75dB
150mVrms 9V
+6dB +12dB +6dB
8.1dB 2.1dB 11.6dB 5.6dB 10.6dB
(effect M65851FP)
100mVrms +12dB +6dB 150mVrms +12dB 15V +6dB 100mVrms +12dB 150mVrms 20V 100mVrms +12dB +12dB
8.1dB 14.1dB
(effect M65851FP)
11.6dB 10.6dB
(effect M65851FP)
14.1dB
(effect M65851FP)
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MICin
1 1
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MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs)
M65851FP
0.022 0.47
50
SERIES
KARAOKE
Lin Rin 0.15 0.022
75
1.0
10k 10k
80 0.15 1 1500p 2 3 0.15 4 1500p 5 6 2.2 7
Gain Gain
79
78
77
76
1.0
74
73
72
71
70
69
68
0.033
67
1.0
66
65 64 63
2.2 Lout Rout 2.2
62
Equalizer
BPF1 BPF2
VOL
Equalizer
MIC L R
SOURCE SELECTOR
PHASE SHIFTER
61 60
SCORE KEYCON
DELAY
0.033
59 58
4700p 15k 560p
0.47
57
8
LPF
9
GND VCC
3.9k 1000p
10
27k
16Kbit SRAM
16Kbit SRAM
0.022
56 55 54 53
0.1
HPF LPF
5.6k 11 1000p 1000p 12 10k 3300p 2.2 4.7k 13 10k 820p 0.047 0.068
17 14 15
100 2.2
52
1.0
51
LOGIC
ADC
D.VOL
F.VOL
50
16
LPF
4700p
49 48 47
1000p
0.068
18 19
ADC
0.068
46 45
0.068
DAC
0.047 15k
20 21
KARAOKE SCOREING
MCU INTERFACE
AUTO RESET
0.1
44
22
DAC
0.1
43 42
REF
47
23 24
GND VCC
CLOCK TEST VDD GND
26 27 28 29 30 31 32 33 34 35 36 37 38
0.068
LPF
39 40
41
100 0.1
25
4700p
11k
0.1
STROBE W/RSEL DATA CLOCK REQ
1000p
MITSUBISHI ELECTRIC
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