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| L i is n ar P RicE; Thestric limits e Not param e som 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 MITSUBISHI ELECTRIC ( 1/ 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 ( 2/ VCC REF DACONT 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 -- -- MITSUBISHI ELECTRIC ( 3/ 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 MITSUBISHI ELECTRIC ( 4/ 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 Not param e som tt al s I M I Na fine subjec ot on. Yecificatichange. AR p o 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 MITSUBISHI ELECTRIC ( 6 / 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 MITSUBISHI ELECTRIC ( 7/ 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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) ( 8/ 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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) MITSUBISHI ELECTRIC ( 9/ 14 ) 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 MITSUBISHI ELECTRIC ( 10 / 14 ) 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) MITSUBISHI ELECTRIC ( 11 / 14 ) 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 MITSUBISHI ELECTRIC ( 12 / 14 ) 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 MITSUBISHI ELECTRIC ( 13 / 14 ) L i is n ar P RicE; Thestric limits e Not param e som 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 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 MITSUBISHI ELECTRIC ( 14 / 14 ) |
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