LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Outline 80P6N-A *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 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 Lch OUTPUT MIX R L PHASE SHIFTER (ON/OFF) KEY CONTROL R+L MIC EQ VOCAL CUT MIX Rch INPUT SCORE SYSTEM ALC MIC MUSIC SEARCH MIC VOL MIC AMP Rch OUTPUT MIX ECHO/ SURROUND DELAY VOL D-65851-65D MITSUBISHI ELECTRIC ( 1 / 36 ) LI E R P M . 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I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som LGAIN MICIN VCFIL LIN RIN PS1 PS2 EQL1 EQL2 EQL3 EQL4 EQLAMPIN1 EQLAMPIN2 EQLAMPOUT 78 77 76 75 74 73 72 71 70 69 68 67 66 65 Gain Gain 3 LBPF2 4 LBPF3 5 MIC L R 64 LOUT 63 ROUT 62 EQRAMPOUT PHASE SHIFTER SOURCE SELECTOR 61 EQRAMPIN2 60 EQRAMPIN1 SCORE DELAY KEYCON Equalizer LBPF1 Equalizer BPF2 2 KARAOKE BPF1 MBPF3 SERIES 79 MBPF1 MGAIN 1 50 80 PIN CONFIGURATION MBPF2 M65851FP 59 EQR4 KSIGIN 6 KCOUT 7 KOLPF2 8 KOLPF1 9 KHPF2 10 KHPF1 11 KCISIG 12 53 DOUT KILPF1 13 52 DISIG KILPF2 14 KADCINTIN 15 VOL 57 EQR2 16Kbit SRAM 16Kbit SRAM 56 EQR1 HPF GND VCC LPF 55 VCC2 54 AGND2 LPF 51 DIN F.VOL D.VOL LOGIC 50 DILPF1 LPF ADC KADCINTOUT 16 58 EQR3 49 DILPF2 17 48 DILPF3 KDACCONT1 18 47 DADCINTIN KDACCONT2 19 DAC VDD GND LPF 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 DGND DATA CLOCK STROBE REQ W/RSEL TEST1 TEST2 DOLPF3 DOLPF2 41 DOLPF1 VDD 24 MITSUBISHI ELECTRIC 43 DDACINTIN 42 DDACINTOUT TEST MCK AVCC1 CLOCK SCORETEST3 23 SCORETEST2 AGND1 44 DDACCONT SCORETEST1 22 MCU INTERFACE 46 DADCINTOUT 45 DADCCONT AUTO RESET KCSEL REF GND VCC 21 KARAOKE SCOREING REF KDACINTIN DAC KDACINTOUT 20 ADC KADCCONT ( 2 / 36 ) LI E R P M . 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I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE PIN DESCRIPTION Pin No. Symbol Name Microphone band pass filter2 Microphone band pass filter3 1 MBPF2 2 MBPF3 3 LBPF1 4 LBPF2 5 LBPF3 6 KSIGIN Line band pass filter3 Key controled signal input 7 KCOUT 8 KOLPF2 Line band pass filter1 Line band pass filter2 I/O Function I Composes band pass filter for Karaoke scoring (For microphone signal) O Composes band pass filter for Karaoke scoring (For reference signal) I O I Key controled signal input Key control output O Key contorol signal output Low-pass filter 2 output O Low-pass filter 1 input High-pass filter 2 output Post-filter after D/A conversion for key control 9 KOLPF1 10 KHPF2 11 KHPF1 12 KCISIG 13 KILPF1 High-pass filter 1 input Key control signal output Low-pass filter 1 input 14 KILPF2 Low-pass filter 2output O 15 KADCINTIN A/D integrator input I 16 KADCINTOUT A/D integrator output O 17 KADCCONT A/D control - 18 KDACCONT1 D/A control 1 - 19 KDACCONT2 D/A control 2 - 20 KDACINTOUT output D/A integrator I O High-pass passage filter for high-pass through I - Output by selecting from L,L+R/2,L-R,and microphone input I Pre-filter after D/A conversion for key control Composes an A/D conversion integrator with external C Composes a D/A conversion integrator with external C O MITSUBISHI ELECTRIC ( 3 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Pin No. Symbol Name M65851FP 50 SERIES KARAOKE I/O 21 KDACINTIN D/A integrator input 22 REF Reference - 23 AGND1 Analog GND1 - 24 VCC1 Analog power supply1 - 25 KCSEL Key control selector I:CMOS20kΩ 26 SCORETEST1 Score test selector1 27 SCORETEST2 28 SCORETEST3 Score test selector3 29 MCK 30 VDD 31 DGND Digital GND 32 DATA Serial data 33 CLOCK Clock control 34 STROBE Strobe 35 REQ Request 36 W/RSEL 37 TEST1 38 TEST2 39 DOLPF3 40 DOLPF2 I Function Composes a D/A conversion integrator with external C . Analog reference voltage =. 1/2Vcc 5V Controls the Key selector key control mode or not I:CMOS20kΩ Score test selector ; normally set to L level Score test selector2 I:CMOS20kΩ Clock control Digital Power supply Write-Read selector Test signal control input1 Test signal control input2 Low-pass filter 3 output Low-pass filter 2 input O:CMOS - Score test selector ; normally no connect External R controls built-in clock generator circuit I:CMOSShumitt 50kΩ O:CMOS I:CMOSShumitt 50kΩ Micro computer I:CMOSShumitt interface 50kΩ O:CMOS I:CMOSShumitt 50kΩ Serial data input/output Shift clock output Strobe output Request output Control the selector write/read I:CMOS20kΩ Test input pin ; normally set to L I:CMOS20kΩ O I MITSUBISHI ELECTRIC Post-filter after D/A conversion for digital delay ( 4 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Pin No. Symbol Name Low-pass filter 1 input M65851FP I/O 42 DDACINTOUT output 43 DDACINTIN D/A integrator input I 44 DDACCONT D/A control - 45 DADCCONT A/D control - 46 DADCINTOUT A/D integrator output O 47 DADCINTIN 48 DILPF3 49 DILPF2 Low-pass filter 2 input I 50 DILPF1 Low-pass filter 1 input - 51 DIN O Composes a A/D conversion integrator with external O 52 DISIG 53 DOUT Delay signal output O 54 AGND2 Analog GND2 - 55 VCC2 Analog Power supply2 - 56 EQR1 - 57 EQR2 Rch equalizer adjustment C1 Rch equalizer adjustment C2 58 EQR3 59 EQR4 60 EQRAMPIN1 Rch equalizer adjustment C4 Rch equalizer input 1 Composes a D/A conversion integrator with external I Delay select signal input Delay select signal output Rch equalizer adjustment C3 Function Post-filter after D/A conversion for digital delay DOLPF1 A/D integrator input Low-pass filter 3 output SERIES KARAOKE 41 D/A integrator 50 Pre-filter before A/D conversion for digital delay I Outputs after selection of echo/surround input signal O Delay signal output - Composes external C for the adjustment of Rch equalizer characteristics (bass and treble) I MITSUBISHI ELECTRIC ( 5 / 36 ) LI E R P M . 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I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Pin No. Symbol Name M65851FP SERIES KARAOKE I/O Function EQRAMPIN2 Rch equalizer input 2 I 62 EQRAMPOUT Rch equalizer output O 63 ROUT Rch output O Rch mixing output 64 LOUT Lch output O Lch mixing output 65 EQLAMPOUT Lch equalizer output O 66 EQLAMPIN2 Lch equalizer input 2 I 67 EQLAMPIN1 61 50 Composes external C for the adjustment of Rch equalizer characteristics (bass and treble) 68 EQL4 Lch equalizer input 1 Lch equalizer adjustment C4 69 EQL3 Lch equalizer adjustment C3 70 EQL2 71 EQL1 72 PS2 Phase shift input 2 I 73 PS1 Phase shift input 1 I 74 RIN Rch line input I Rch line input 75 LIN Lch line input I Lch line input 76 VCFIL Vocal cut filter I Processes frequencies lower than the vocal band 77 MICIN Microphone input I Microphone input 78 LGAIN I Set gain for the no music detection 79 MGAIN I Set gain for the microphone detection 80 MBPF1 - Composes band pass filter for Karaoke scoring (For microphone signal) Lch equalizer adjustment C2 Lch equalizer adjustment C1 I - Composes external C for the adjustment of Lch equalizer characteristics (bass and treble) Determines a constant at time of phase shift Line input gain control Microphone input gain control Microphone band pass filter2 MITSUBISHI ELECTRIC ( 6 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE ABSOLUTE MAXIMUM RATINGS Symbol Name Test conditions Ratings Units Vcc Supply voltage 6.0 V Vi Circuit current -0.3~Vcc+0.3 V Pd Input Voltage 815 W -20~+75 °C -40~+125 °C Topr Tstg Operating temperature Storage temperature RECOMMENDED OPERATING CONDITION Limits Symbol Parameter Test conditions Units Min Typ Max VCC Analog supply voltage 4.5 5 5.5 V VDD Digital supply voltage 4.5 5 5.5 V -0.3 0 0.3 V pin 0 - 0.3VDD V 32 33 34 36 pin 0 - 0.8 V 0.7VDD - VDD V VDD-1 - VDD V VCC-VDD Analog-Digital voltage margin 25 26 27 28 VIL L input level 37 38 25 26 27 28 VIH 37 38 pin H input level 32 33 34 36 pin MITSUBISHI ELECTRIC ( 7 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE ELECTRICAL CHARACTERISTICS (Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25°C Unless otherwise noted) Limits Symbol Parameter Icc Circuit current fck Clock frequency Test conditions Min Typ Max 25 60 90 mA 6.8 8 9.2 MHz pin 10 20 40 kΩ 32 33 34 36 pin 25 50 100 kΩ No signal provided KEY CONTROL TOTAL 25 26 27 28 RID 37 38 IOH "H"Output current 32 35 pin VOH=4.0V - -20 -10 mA IOL "L"Output current 32 35 pin VOL=1.0V 20 34 - mA Gv Gain between input and output -3 0 +3 dB THD Output distortion Vo=100mVrms,30kHz L.P.F - 1.3 3 % - - 80 - 65 dBV 0.7 1.0 - Vrms - -60 -40 dB Sets 10msec with microcomputer 4.2 10.2 16.2 Sets 15msec with microcomputer 8.4 15.4 22.4 Sets 20msec with microcomputer 13.5 20.5 27.5 Sets 30msec with microcomputer 19.7 28.7 37.7 Sets 50msec with microcomputer 40.2 49.2 58.2 Sets 100msec with microcomputer 86.3 98.3 110.3 Sets 130msec with microcomputer 116 131 146 Sets 150msec with microcomputer 128 148 168 Sets 200msec with microcomputer 177 197 217 No Vomax VOLATTmax Digital Delay Pulldown resistance Unit Td Output noise voltage Maximum output voltage Maximum volume attenuation Delay time VOL=0dB JIS-A THD=10% Gain=-∞ MITSUBISHI ELECTRIC msec ( 8 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE (Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25°C Unless otherwise noted) Limits Symbol Gv DIGITAL DELAY THD Vomax Parameter Unit Min Typ Max -3 0 +3 Td=10,15,20msec, 30kHz LPF 0.3 0.6 Td=30msec, 30kHz LPF 0.5 1.0 Td=50msec, 30kHz LPF 0.7 1.4 Gain between input and output VOL=0dB Maximum output voltage Output noise voltage Maximum volume VOLATTmax attenuation Gv THD Vomax No dB % Output distortion Td=100msec, 30kHz LPF 1.0 2.0 Td=150msec, 30kHz LPF 1.5 3.0 Td=200msec, 30kHz LPF 2.0 4.0 30kHz LPF, THD=10% 0.7 Td=10,15,20,30,50msec, Vi=0mVrms JIS-A No LINE Test conditions 1.0 Vrms -92 -80 -87 -72 -85 -70 -82 -67 Delay volume Gain=-∞ -60 -40 dB Feed back volume Gain=-∞ -60 -40 dB 0 +3 dB 0.05 0.1 % Td=100msec, Vi=0mVrms JIS-A Td=130msec,150msec Vi=0mVrms ,JIS-A Td=200msec, Vi=0mVrms JIS-A 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 MITSUBISHI ELECTRIC -3 1.2 Vrms 1.8 -95 dBV -88 dBV ( 9 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE (Vcc=5V,f=1kHz,vi=100mVrms,F0,Ta=25°C Unless otherwise noted) Limits Symbol Parameter Test conditions Unit Min EQ;BASS,TREBLE LINE CS Zi Channel separation Typ Max -70 -50 dB 10 20 40 kΩ upon key control through Lin=400Hz, Rout JIS-A Input impedance Grej Vocal removal ratio Vocal cut 14 18 GBBmax Maximum bass boost volume f=100Hz 9 12 15 GBCmax Maximum bass cut volume f=100Hz -15 -12 -9 GTBmax Maximum treble boost volume f=10kHz 9 12 15 GTCmax Maximum treble cut volume f=10kHz -15 -12 -9 dB dB MITSUBISHI ELECTRIC ( 10 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Key set mode Built in 16KSRAM Delay time (changeable) 100ms,130ms150ms,200ms Built in 16KSRAM 17 steps Built in 16KSRAM Digital Surround 10ms ~ 50ms 5 kinds Notes At Key set mode Capable of use echo or surround Not key set mode Capable of use both echo and surround 2 Digital key control -8 ~ +8 3 Digital Surround not key set mode Switch with the Echo 4 Phase shifter surround Changeable the effect thanks to the external R Capable of use both key control and echo 5 Equalizer Bass/Treble -12dB ~ +12dB/2dB 13 steps changeable Bass; Resonance type Treble ; Filter type 6 Source selector Provided all multiple voice soft, L,R,(L+R)/2, VOCAL CUT L-R(for Digital Surround) Key control bypass 7 Scoring function Scoring the Mic vocal input Compare the reference vocal and mic vocal frequency 8 Help vocal function At the mic vocal is nothing , reference vocal is mixed output. 9 Voice key control Input the mic voice to key control (change voice tone) At Key set mode capable to use voice key control or key control Detect to line input level At music input is nothing ,key control level is reset automatically 10 Music search Others 11 MCU Inter face Current control type oscillation circuit Automatic mute Automatic reset MITSUBISHI ELECTRIC ( 11 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE Delay Block Delay Block provides a delay signal which using digital echo or digital surround. 1.Constitution 1000p 4700p 0.1µ 52 INPUT 51 50 49 48 1000p 0.068µ 0.068µ 4700p 0.1µ 47 46 45 44 43 42 41 40 39 DLSW3 + LPF ADC DAC 1 DLSW2 LPF 2 DELAY VOLUME FEEDBACK VOLUME + + DELAY OUTPUT DLSW1 16Kbit RAM 2.Function 1 Delay time Capable to set the follow delay time; Mode Delay time Echo 100,130,150,200msec Surround 10,15,20,30,50msec 2 Switch mode Mode Echo Surround DLSW1 DLSW2 1 ON 1 2 OFF 2 OFF 1 MITSUBISHI ELECTRIC 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) ( 12 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE DLSW3 Delay signal Mute MUTE OFF ON MUTE ON OFF 3 Input/ output LPF Input/output LPF is formed following block. 1000pF 4700pF 49 50 48 (40) (41) (39) 1 OUTPUT Input/ output LPF INPUT 2 Mode Switch conditions Cut off frequency Echo 1 3.0kHz Surround 2 7.0kHz 4 Volume Mode Volume Delay volume +6dB ~ -12dB / 3dB step and -∞ 8 level Feedback volume -2dB ~ -6dB / 1dB step and -8dB,-10dB,-∞ 8 level MITSUBISHI ELECTRIC ( 13 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Key control condition KCSEL L Key control set mode H Not key control set mode 2.Constitution INPUT 4700p 3300p 10k 5.6k 15k 10k 2.2µ 15k 1000p 0.068µ 4.7k 0.047µ 0.068µ 3.9k 0.047µ 0.068µ 12 13 14 LPF 2.2µ 1000p 2.7k 560p 820p 25 1000p OUTPU T 15 16 17 18 19 20 21 ADC DAC KEY CONTROL 9 8 11 10 LPF HPF VOL + 7 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 ( 14 / 36 ) 6 LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 1.0µ Echo Feed back volume 4700p 24k OUTPUT 4700p 24k 24k 24k 2.2µ 24k 24k 0.068µ 0.1µ 0.068µ 0.1µ 24k 1000p 1000p 25 12 13 14 LPF 2.2µ 24k 15 16 17 18 19 20 21 ADC DAC DELAY 9 8 11 10 LPF BUF VOL + 7 16Kbit RAM Delay time Volume level 100msec,130msec,150msec,200msec +4~-6dB/2dB step and -10dB, -∞ 8 level (same as key control volume) MITSUBISHI ELECTRIC ( 15 / 36 ) 6 LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE Phase Shifter Block Following is the phase shifter block, which makes phase surround effect. 20k Lch INPUT 20k Lch OUTPUT Phase Shifter 20k Key control block output 20k Surround SW R(internal) 73 C(external)=0.022µF 72 20k 20k 20k 20k Rch OUTPUT Rch INPUT Switch conditions Surround SW ON Surround effect R=13kΩ Max R=16kΩ Typ R=20kΩ Min Nothing Surround SW OFF MITSUBISHI ELECTRIC ( 16 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 R1 1.8k 136k 71 (56) C1 0.022µ 70 (57) 69 (58) 68 (59) 65 (62) C3 0.033µ C2 0.47µ 64 (63) 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/(2π C1•C2•R1•R2) Q= (Hz) (C1•R2) / (C2•R1) MITSUBISHI ELECTRIC ( 17 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 20k 20k Lch INPUT Vocal cut OUTPUT R 20k 76 vocal cut block 20k C 0.15É 20k Rch INPUT 20k 76 C 0.15µ fvc= 1 2πCR LPF is formed by the internal R (20kΩ) and the external C, when Where C=0.15µ F , cut off frequency is 53Hz . MITSUBISHI ELECTRIC ( 18 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Ratio Compare the frequency reference voice and microphone voice 75% Vocal level judgment (as vocal is bigger than reference level,judgment is good) 25% MITSUBISHI ELECTRIC ( 19 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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. reference level Input signal 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=50kΩ 78 Internal resistance precision is about ±30%. R1 Gain Gv = (R1 + R2) / R1 MITSUBISHI ELECTRIC ( 20 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 MITSUBISHI ELECTRIC ( 21 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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=0.15µF 80 (3) C2=1500pF 1 2 (4) (5) R2=100kΩ INPUT OUTPUT R1=10kΩ Low level cut off frequency fcl and High level cut off frequency fch is fcl= 1/2πC1R1 = 106 Hz fch = 1/2πC2R2 = 1.1kHz and , the gain of amplifier Gv is Gv = R2/R1 = 20 dB. Same as the band pass filter is constituted microphone signal input. 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 Off Source selector mode Lch monaural (L+R)/2 vocal cut (L+R)/2 others same as microphone input 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 MITSUBISHI ELECTRIC ( 22 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE The timing of microphone input signal detection reference level Microphone input level output release time microphone signal detection attack time 0s OFF On On Following is the microphone input signal judgment block , which includes amplifier so reference level can regulate. MIC Level Comparator R2=50kΩ 79 Internal resistance precision is about ±30%. R1 Gain Gv = (R1 + R2)/R1 MITSUBISHI ELECTRIC ( 23 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Key control No changing Phase shifter OFF Equalizer Source selector Scoring function OFF Stereo(Key control by pass) OFF MITSUBISHI ELECTRIC ( 24 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 . MCU Interface circuit 32 DATA 36 CLOCK 33 34 35 STROBE 36 REQ W/RSEL Conditions W/RSEL L MCU H IC MCU (Data output) IC(Data input) MCU 2.Data input (1)Data input format DATA D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 CLOCK STROBE (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 L L Echo/Surround mode L H Key control mode H L Equalizer/Phase sifter mode H H Line mixing/Others mode D2~D13 D14 D15 Chip addles L MITSUBISHI ELECTRIC H ( 25 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE 1 Echo /Surround mode D0 D1 L L D2 Echo/ Surround Parameter Echo/Surround Switch Echo delay time Surround delay time D3 D4 D5 D7 D8 Surround delay time Echo delay time D2 D6 D3 D4 D9 D10 D11 D12 D13 D14 delay volume D5 D6 D7 Feed back volume L H Function L - - - - - Echo H - - - - - Surround - L L - - - 100msec - H L - - - 130msec - L H - - - 150msec - H H - - - 200msec - - - H L L 10msec - - - L H L 15msec - - - H H L 20msec - - - L L H 30msec - - - H L H 50msec MITSUBISHI ELECTRIC D15 On not key control set mode sets H level ( 26 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Parameter Delay volume Feed back volume M65851FP 50 SERIES KARAOKE D8 D9 D10 D11 D12 D13 H H H - - - +6dB H H L - - - +3dB H L H - - - 0dB H L L - - - -3dB L H H - - - -6dB L H L - - - -9dB L L H - - - -12dB L L L - - - -∞ - - - H H H -2dB - - - H H L -3dB - - - H L H -4dB - - - H L L -5dB - - - L H H -6dB - - - L H L -8dB - - - L L H -10dB - - - L L L -∞ D5 D6 Function 2 Key control mode D0 D1 L H D2 D3 D4 Auto VSC/ Reset VMC D7 D8 Key change level MITSUBISHI ELECTRIC D9 D10 D11 D12 D13 D14 D15 Key control volume Delay Delay volume signal select mute L H ( 27 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP D2 D3 D4 Automatic key control reset L - - - H - - - L - Key change level SERIES KARAOKE Parameter Key control mode selector 50 D5 D6 D7 D8 - - - automatic reset OFF - - - - automatic reset ON - - - - - VMC mode H - - - - - VSC mode - - H H L L L +8 - - H L H H H +7 - - H L H H L +6 - - H L H L H +5 - - H L H L L +4 - - H L L H H +3 - - H L L H L +2 - - H L L L H +1 - - L L L L L 0 - - L L L L H -1 - - L L L H L -2 - - L L L H H -3 - - L L H L L -4 - - L L H L H -5 - - L L H H L -6 - - L L H H H -7 - - L H L L L -8 MITSUBISHI ELECTRIC Function ( 28 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Parameter D9 Key control volume set (when not key control mode, it use a echo volume) M65851FP Delay volume selector Delay signal mute SERIES KARAOKE D10 D11 Function H H H +4dB H H L +2dB H L H 0dB H L L -2dB L H H -4dB L H L -6dB L L H -10dB L L L -∞ D12 D13 Parameter 50 Function L - Using an echo volume H - Using a microphone volume - L Mute OFF - H Mute ON 3 Equalizer/Phase shifter mode D0 D1 H L D2 D3 automatic vocal support D4 D5 Phase shifter D6 D7 D8 D9 Equalizer treble MITSUBISHI ELECTRIC D10 D11 D12 D13 D14 D15 Equalizer bass L H ( 29 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som Parameter Automatic vocal support (It can use only echo mode) Phase shifter surround mode M65851FP D7 D8 D9 SERIES KARAOKE D2 D3 D4 D5 Function L - - - OFF H - - - ON - L - - Release time 1sec - H - - Release time 2sec - - L L OFF - - H L Surround effect Minimum - - L H Surround effect Typical - - H H Surround effect Maximum Equalizer treble mode D6 50 Equalizer bass mode Volume(dB) D10 D11 D12 D13 Volume(dB) H H H L +12 H H H L +12 H H L H +10 H H L H +10 H H L L +8 H H L L +8 H L H H +6 H L H H +6 H L H L +4 H L H L +4 H L L H +2 H L L H +2 L L L L 0 L L L L 0 L L L H -2 L L L H -2 L L H L -4 L L H L -4 L L H H -6 L L H H -6 L H L L -8 L H L L -8 L H L H -10 L H L H -10 L H H L -12 L H H L -12 MITSUBISHI ELECTRIC ( 30 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE 4 Line mixing/Others mode D0 D1 H D2 D3 D4 Source selector H D5 D6 Key control by pass Key control mixing D2 Parameter D3 D4 L Source selector Key control by pass Key control mixing ON/OFF Selector D7 D8 D9 Delay mixing D5 D6 L - - H - - L D10 D11 D12 D13 Scoring function D14 D15 Voice key control L H Function Delay block input L-R Stereo Delay block input (L+R)/2 L H - - - Lch monaural H L - - - Rch monaural H H - - - Vocal cut - - - L - By pass OFF(Though the key control circuit) - - - H - By pass ON(By pass the key control circuit) - - - - L Mixing OFF(SSSW10="2") - - - - H Mixing ON(SSSW10="1") Relationships source selector and key control by pass mode Key control mixing by pass ON Key control mixing by pass OFF D2 D3 L L Stereo (L+R)/2 L H Lch monaural Lch monaural H L Rch monaural Rch monaural H H Vocal cut Vocal cut MITSUBISHI ELECTRIC ( 31 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE Parameter D7 D8 D9 Delay signal mixing ON/OFF Selector L - - - - - - Mixing OFF H L - - - - - Mixing ON(L,R same phase) H H - - - - - Mixing ON(L,R reverse phase) - - L - - - - Scoring function OFF - - H - - - - Scoring function ON - - - L - - - Score output after no music decision - - - H - - - Score can output always timing - - - - L - - Internal music detection decides the scoring start/stop timing - - - - H L - - - - - H H - MCU data decides the scoring start/stop timing - - - - - - L OFF - - - - - - H ON Scoring function D10 D11 D12 D13 Function * Scoring stop Scoring start Voice key control * 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. MITSUBISHI ELECTRIC ( 32 / 36 ) * LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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 Music decision Line input REQ (output) W/RSEL (input) CLOCK (input) DATA D0 (output) 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 . Music decision Line input W/RSEL (input) CLOCK (input) DATA D0 (output) D1 D2 D13 D14 D15 (3)Data format D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 Music interval (MSB) decision D10 D11 D12 D13 D14 D15 Score result output (binary output) (LSB) D8 : Music interval decision music decision="H", music interval decision="L" D9~D15 : Score result output D9 D10 D11 D12 D13 D14 D15 an exampleÅ@78 points H L L H H H L MITSUBISHI ELECTRIC ( 33 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som 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. Equalizer gain mode Input base level S/N Head room 150mVrms 0dB 10.6dB 78.5dB 100mVrms +6dB 8.1dB 75dB 100mVrms +12dB 2.1dB 75dB 50mVrms +12dB 8.1dB 69dB 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 Treble 1.8k 71 (56) 70 (57) 69 (58) 68 (59) 67 (60) 66 (61) 65 (62) 64 (63) 0.033µ 0.022µ Analog high voltage Vcc2 0.47µ 1.0µ OUTPUT 150k M5218AP Vcc2 2 MITSUBISHI ELECTRIC ( 34 / 36 ) LI E R P M . RY n. I N A cificatio change MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som M65851FP 50 SERIES KARAOKE Following the relations supply voltage, input signal level ,head room and S/N. (external opamp ;M5218AP) Vcc2 Input level 150mVrms Equalizer gain level Head room S/N +6dB 8.1dB 78.5dB +12dB 2.1dB 78.5dB +6dB 11.6dB 75dB +12dB 5.6dB 75dB 10.6dB 78.5dB 9V 100mVrms +6dB 150mVrms +12dB 15V +6dB 100mVrms +12dB 150mVrms +12dB 100mVrms +12dB 20V MITSUBISHI ELECTRIC (effect M65851FP) 8.1dB 78.5dB 14.1dB 75dB (effect M65851FP) 11.6dB 75dB 10.6dB 78.5dB (effect M65851FP) 14.1dB (effect M65851FP) 75dB ( 35 / 36 ) spe ct to inal subje f a are not is is ic limits h T r ; met ice Not e para som APPLICATION EXAMPLE 79 78 BPF1 Gain Gain 77 76 1.0µ 0.022µ 1.0µ 0.15µ 1.0µ 80 0.022µ Lin Rin 1µ 10k 10k 50 SERIES KARAOKE MICin 1µ M65851FP 75 0.033µ M MITSUBISHI SEMICONDUCTORS (SOUND PROCDSSOR ICs) 0.47µ LI E R P . RY n. I N A cificatio change 74 73 72 71 70 68 69 67 66 65 2.2µ 0.15µ 1 1500p 2 Equalizer L R 2.2µ 62 3 0.15µ 61 60 SCORE KEYCON 6 DELAY 2.2µ 7 VOL 4700p 15k 0.033µ Equalizer 5 PHASE SHIFTER SOURCE SELECTOR BPF2 4 59 58 0.47µ 8 27k 5.6k 11 1000p 1000p 12 10k 3300p 2.2µ 4.7k 13 14 2.2µ 1.0µ 51 D.VOL LOGIC 50 LPF ADC 0.068µ 100µ 52 15 16 54 0.1µ 53 820p 0.047µ 55 LPF 10k 56 GND VCC 10 0.022µ 16Kbit SRAM HPF 3.9k 1000p 16Kbit SRAM F.VOL 9 57 LPF 560p Rout 63 MIC 1500p Lout 64 4700p 49 17 48 18 47 1000p 0.068µ 0.047µ 20 DAC 19 ADC 0.068µ DAC GND VCC 24 44 REF 23 0.1µ AUTO RESET MCU INTERFACE 15k 47µ 0.068µ 45 KARAOKE SCOREING 21 22 46 CLOCK 0.1µ 43 42 0.068µ TEST VDD GND LPF 41 100µ 0.1µ 4700p 25 26 27 28 29 11k 30 31 0.1µ 32 33 34 35 36 STROBE W/RSEL DATA CLOCK REQ MITSUBISHI ELECTRIC 37 38 39 40 1000p ( 36 / 36 )