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| MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT DESCRIPTION The M62481FP is an optical pick-up servo system IC for a CD player.It has amplifiers,swiches,comparators and logic controller for servo control of an optical pick-up. Furthermore,it has automatic adjustment system controlled by micro -controller. Many built-in functions and the 56pin shrink quard package realize the compact and moderate CD player with high performance. FEATURES *8 times speed *3 beam pick-up servo system *Adaptable to hologram pick-up system with additional input. *Built-in automatic laser power control circuit *Built-in mirror detector *Built-in adjustment circuit for automatic tuning *Built-in serial data command interface to reduce micro-controller overload *Built-in self-reset circuit 56P6S 0.65mm pitch 56pin QFP (10.0mmX10.0mmX2.8mm) APPLICATION CD PLAYER,CD-ROM PLAYER RECOMMENDED OPERATION CONDITIONS *Supply Voltage Range *Rated Supply Voltage ****** 4.5 -> 5.5V ******5.0V System Block Diagram M62481FP PD Pick-Up HF PRE AMP FE PRE AMP ADJ ADJ TRK Servo HF signal MCU I/F FCS Servo Search Sled Servo MCU LD TE PRE AMP ALPC TRK Actuator DSP Sled Motor FCS Actuator Spindle Motor M6582X DRIVER M5674X MITSUBISHI ELECTRIC ( 1 / 88 ) D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN CONFIGURATION (top view) 56 55 54 53 52 51 50 49 48 47 46 45 44 43 OST TE1 - IN TE1 TE2 + IN TG1 TE2 - IN TE2 OUT SHOCK IN RIREF Vcc TG2 TG3 TS - IN TS OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 42 41 40 39 38 37 36 35 34 33 32 31 30 29 HFC APC IN APC OUT CFSR OSF FE1 - IN FE1 FE2 + IN FG1 FE2 - IN FE2 OUT FG2 FS - IN FS OUT D-62481-87I MITSUBISHI ELECTRIC ( 2 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT BLOCK DIAGRAM 56 55 54 53 52 51 50 49 48 47 46 45 44 43 400k 60k 60k FBAL OST TE1 - IN TE1 TE2 + IN TG1 TE2 - IN TE2 OUT SHOCK IN RIREF Vcc TG2 TG3 TS - IN TS OUT 1 30k 42 41 APC Focus offset HFC APC IN APC OUT CFSR OSF FE1 - IN FE1 FE2 + IN FG1 FE2 - IN FE2 OUT FG2 FS - IN FS OUT 2 3 4 5 6 5.0k 400k 30k 30k Track gain1 18k Track balance1 F-E 10k 10k Track balance2 HF MR/HFOK 40 39 38 Track gain2 1k TS HOLD Focus balance2 Focus gain2 220k TS 2k ON TE1 30k 30k 18k TG1 TS OFF 22k TC 37 36 35 34 FG1 7 8 FE1 A-B 1k Focus balance1 2k TE2 Shock FS ON 220k FS HOLD FZC OFF 9 10 11 Focus gain1 JF TG2 TG3 JR TS SS OFF 22k 33 FE2 32 31 30 FS OFF 12 SF VREF 47k 56k 47k Reset FG2 13 14 10k SS SR SS BUF 47k FS 29 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Unit Resistance : D-62481-87I MITSUBISHI ELECTRIC ( 3 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN DESCRIPTION PIN No. Symbol Equivalent circuit Function Voltage output for Track offset adjustment 1 OST 1 2 2 TE1 -IN 6k TE1 Amp negative input 3 3 TE1 18k TE1 Amp output 22k 4 TE2 +IN 4 220k TE2 Amp positive input 5 TG1 5 1k 1k 10k TG1 SW 6 TE2 -IN 6 TE2 Amp positive input 7 TE2 OUT 7 TE2 Amp output 8 SHOCK IN 8 2.2k Shock detector input D-62481-87I MITSUBISHI ELECTRIC ( 4 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit 9 Function 9 RIREF Current reference 10 Vcc 10 Power supply 11 TG2 11 1k 1k 10k TG2 SW 1k 12 TG3 12 1k 10k TG3 SW 13 TS - IN 13 TS Amp negative input 14 TS OUT 14 TS Amp output 10k 15 15 SS + IN 10k SS Amp positive input 16 SS - IN 16 SS Amp negative input D-62481-87I MITSUBISHI ELECTRIC ( 5 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit Function 17 SS OUT 17 SS Amp output 220k 47p 18 DETFIL 18 Filter for Phase Detector (Gain adjustment) 19 VREF 19 Vcc/2 Amp output 68k 20 CLPF 20 3.0k 470 LPF Capacitor for adjutment 21 GND 21 Ground 10k 22 DOUT1 22 Servo status Data output1 20k 23 MLA/DIS 23 4.7k MCU Latch Signal input (discharge control for LPF Capacitor of adjustment) 24 JP1/SG 24 20k 4.7k Single Track Jump Control (reference signal input for Gain adjustment) D-62481-87I MITSUBISHI ELECTRIC ( 6 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit Function 25 MCK 20k 25 4.7k MCU clock signal input 20k 26 MSD 26 4.7k MCU serial Data input 10k 27 DOUT2 27 Servo status Data output2 10k 28 HFD 28 HF Detect output 29 FS OUT 29 FS Amp output 30 FS - IN 30 FS Amp negative input 31 FG2 31 1k 1k 10k FG2 SW 32 FE2 OUT 32 FE2 Amp output D-62481-87I MITSUBISHI ELECTRIC ( 7 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit Function 33 FE2 - IN 33 FE2 Amp negative input 34 FG1 34 1k 1k 10k FG1 SW 22k 35 FE2 + IN 35 220k FE2 Amp positive input 36 36 FE1 FE1 Amp output 18k 37 37 FE1 - IN 6k FE1 Amp negative input 38 OSF 38 Voltage output for Focus offset adjustment 39 CFSR 39 Voltage for Focus Search 40 APC OUT 100 40 APC(Automatic Laser Power Control)output D-62481-87I MITSUBISHI ELECTRIC ( 8 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit Function 41 APC IN 41 APC(Automatic Laser Power Control)input 42 42 HFC 100k 4.7k HF Capacitor for HF Detector 43 MRC 43 Hold Capacitor for Mirror Detector 44 COMP IN 44 Comp Amp input 45 FBO 45 Focus Balance Amp output 46 FBI 46 Focus Balance Amp input 47 MR IN 47 5.1k 51k Input of Mirror detector 48 48 HF OUT 51k HF Amp output D-62481-87I MITSUBISHI ELECTRIC ( 9 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT PIN No. Symbol Equivalent circuit Function 49 HF - IN 49 5k HF Amp negative input 50 50 GND Ground 51 10k AB 51 10k A,B output 52 C IN 52 30k HF input C for Auxiliary 53 B IN 53 60k Focus Servo input B 54 A IN 54 60k Focus Servo input A 55 E IN 55 400k Track Servo input E 56 F IN 56 400k Track Servo input F D-62481-87I MITSUBISHI ELECTRIC ( 10 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ABUSOLUTE Symbol Vcc VI Pd KO Topr Tstg MAXIMAUM RATING Parameter Conditions Ta=25deg.,unless otherwise noted Ratings 7 -0.3 -> Vcc+0.3 900 Ta = 25deg. 9.0 -20 -> +85 -40 -> +125 Unit V V mW mW/deg. deg. deg. Maximum Supply Voltage Input Voltage Power Dissipation Thermal Derating Operating Temparature Storage Temparature THERMAL DERATING (MAXIMUM RATING) 1000 900 800 600 400 360 200 0 0 25 50 75 85 100 125 AMBIENT TEMPERATURE Ta (deg.) RECOMMENDED OPERATING CONDITION Symbol Vcc VIH VIL fck Parameter Supply Voltage High-level Input Voltage Low-level Input Voltage Clock frequency MITSUBISHI ELECTRIC ( 11 / 88 ) Pin 23 ,Pin 24 , Pin 25 ,Pin 26 Conditions Limits Typ Min 4.5 Vcc -> 0.7 Max 5.5 Vcc Vcc->0.3 Unit V V V kHz 5.0 0 500 D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(1/6) (Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted) No Symbol Block 1 Icc 2 VREF Measurement circuit Parameter Circuit current Reference voltage Gain for Input A/B Gain for Input C HF Cut off frequency1 HF Cut off frequency2 High output voltage Low output voltage Test Conditions Quiescent Limit Min Typ Max Unit mA V dB dB MHz MHz V 30 2.3 55 2.5 5.1 11.1 16.0 16.0 4.0 1.0 -2 70 2.7 7.1 13.1 3-1 GVHFAB 3-2 GVHFC 4-1 4-2 5 6 7 8 9 fHF1 fHF2 VHHF VLHF HF IOHHF IOLHF VOSHF f=500kHz f=500kHz (normal) 3dB down refer to 500kHz (Invert) 3dB down refer to 500kHz INPUT Vin= 4.0V INPUT Vin= 1.0V VOH=4.0V VOL=1.0V refer to VREF "Normal"Mode: R0;D5=0 "Normal"Mode: R0;D5=0 "Normal"Mode: R0;D5=0 "Brake"Mode : R0;D5=1 "Brake"Mode : R0;D5=1 "Brake"Mode : R0;D5=1 "Normal"Mode: R0;D5=0 , R1;D13=1 "Normal"Mode: R0;D5=0 , R1;D13=0 refer to VREF (1) 3.1 (2) 9.1 (1) 12.0 (3) 12.0 (4)-1 (4)-1 (4)-2 (4)-2 (5) IV + 3.5 1.5 -1 V mA mA High output current Low output current Offset voltage Ratio(nomal) Ratio(nomal) Hysteresis(normal) Ratio(jump) MR Ratio(jump) Hysteresis(jump) Cut off frequency (Low) Cut off frequency (High) Threshold High output voltage Low output voltage High output current Low output current 1 -50 2 0 50 mV 10-1 RMN-ON 10-2 RMN-OFF 10-3 RMN-HYS 11-1 RMJ-ON 11-2 RMJ-OFF 11-3 RMJ-HYS 12-1 12-2 (6)-1 0.31 (6)-1 0.37 (6)-1 0.03 (6)-1 0.42 (6)-1 0.48 (6)-1 0.04 (6)-2 (6)-2 (7) (7) (7) 0.41 0.51 0.47 0.06 0.52 0.58 0.08 50 100 - 0.12 0.57 0.12 0.62 0.68 0.16 kHz V V 1.5 -70 V uA uA fMRL fMRH VTHFOK HFOK 30 60 13 14 16 17 18 - 0.26 - 0.19 VHHFD 15 VHDOUT VLHFD 3.5 4.0 1.0 VLDOUT HFD/ IOHHFD DOUT1,2 19 IOHDOUT 20 IOLHFD 21 IOLDOUT VOH=4.0V VOL=1.0V MITSUBISHI ELECTRIC ( 12 / 88 ) (8) -100 (8) 500 1000 D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(1/6) *IV+HF BLOCK (1)GVHFAB,fHF1; Input signal ViA (ViB) ViA(ViB) Vref+0.25V Vref+0.25V Vo 18k ViA 0.5Vp-p ~ 60k 54 ~ 53 ViB 60k 52 51 49 Vref 48 t 60k 60k 10k 10k 30k + HF 5k (2)GVHFC; Input signal ViC ViC 0.5Vp-p Vo Vref+0.25V ~ 54 53 52 ViC 30k 18k Vref 51 49 48 t 60k 60k 10k 10k 30k HF + 5k (3)fHF2; ViA(ViB) Input signal ViA (ViB) Vref-0.25V 0.5Vp-p Vo Vref-0.25V Vref ViA ~ 60k 54 ~ 53 ViB 60k 52 10k 51 49 10k t 48 HF + 60k 60k 10k 30k VREF=1/2Vcc 5k 10k D-62481-87I MITSUBISHI ELECTRIC ( 13 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (4)-1VHHF,VLHF; INPUT ViA(ViB) ViA 60k 54 53 Vo ViB 60k 52 51 49 18k 4.7k VHHF:ViA(ViB)=4.0V VLHF:ViA(ViB)=1.0V 48 HF + 60k 60k 10K 10K 30k 5K (4)-2VHHF,VLHF; INPUT ViA(ViB) ViA 60k 54 53 ViB 60k 52 51 49 18k Vo 48 IOHHF:VO=4.0V IOLHF:VO=1.0V HF + 60k 60k 10K 10K 30k 5K Vo (5)VOSHF; 18k 60k 54 53 60k 52 51 49 48 HF + 60k 60k 10k 10k 30k 5k 19 47k + 47k VREF=1/2Vcc Vref D-62481-87I MITSUBISHI ELECTRIC ( 14 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *MR BLOCK (6)-1)RMN,RMJ,fMR (High,Low); RMN : Mirror detector sensitivity : in normal mode (R0;D5(BRAKE)=0) Test : UB is decrease starting at UB=UA. When MR pulses are detected at the HFD pin,RMN is calculated as follow: RMN= UB UA 49 ~ Vi 18k 18k 0.001u 0.068u 48 47 43 42 0.001u RMJ : in brake mode (R0;D5(BRAKE)=1) Test : same explanation as above + VREF=1/2Vcc MR/HFOK HFOK 28 MR Vo HFD MODE V 47 Vref UB UA t /BW WIDE=1; /BW WIDE=0; fc=500kHz AM fmod=1kHz fc=8.0MHz AM fmod=1kHz A= 0.5V -2)fMR (High,Low); fMR(Low) : cut off frequency of mirror detector. (R1;D13(BW WIDE)=1) Test condition : * UB UA =0.3 -> UB=0.15V *(R0;D5(BRAKE)=0) Test : fmod is increased. The HFO output is monitored. When the MR detector stops operation, the cut off frequency is found. fMR(Low) = fmod fMR(High) : cut off frequency of mirror detector.(R1;D13(BW WIDE)=0) (R0;D5(BRAKE)=0) Test : same explanation as above MITSUBISHI ELECTRIC ( 15 / 88 ) D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (7)VTHHFOK,VHHFD,VLHFD; VTHHFOK: When input voltage Vin increase starting from Vref, Vo change form "L" to "H" and pin 48 measure voltage( refer to Vref). Vin 18k 18k 0.068u 49 48 47 43 42 0.001u + VREF=1/2Vcc MR/HFOK HFOK (RL=Nothing) 28 MR Vo VHHFD VLHFD HFD MODE (8)IOHHFD,IOLHFD; VO =4.0V : IOHHFD VO =1.0V : IOLHFD Vin 18k 18k 0.068u 49 48 47 43 42 0.001u VREF=1/2Vcc + VREF=1/2Vcc MR/HFOK HFOK 28 MR Vo IOH (IOL) HFD MODE D-62481-87I MITSUBISHI ELECTRIC ( 16 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(2/6) (Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted) Symbol Block 22 23 24 25 26 GVFE VHFE2 VLFE2 IV Parameter Gain High output voltage Low output voltage High output current Low output current Offset voltage Offset voltage Offset voltage Focus balance Gain High output voltage Low output voltage Test Conditions Gain value DCBA=1000(0dB) INPUT Vin= 4.0V INPUT Vin= 1.0V INPUT Vo= 4.0V INPUT Vo= 1.0V refer to VREF, refer to VREF, refer to VREF, Measurement circuit (10) (11) (11) (12) (12) Limit Min Typ Max Unit dB V 12.0 3.5 14.0 4.0 1.0 -2 16.0 + FE 1.5 -1 V mA mA IOHFE2 IOLFE2 1 -40 -15 -15 -2 -2.0 3.5 2 0 0 0 0 0 4.0 1.0 -6.0 1.5 -4.0 40 15 15 +2 2.0 27 VOSFE2 28 VOSFE1 29 VOSFE1adj 30 31 32 33 34 35 36 BALFE GVFS VHFS VLFS IOHFS IOLFS VOSFS + + + - Focus gain : 0dB Focus balance : 0% Focus gain : 0dB Focus balance : 0% Focus gain : -11 -> 9.8dB (13)-1 mV mV mV % dB V V mA mA (13)-1 Focus balance : 0% (13)-2 R2;DCBA=1000(0%) (10) (14) (15) (15) (16) (16) INPUT Vin= 1.0V INPUT Vin= 4.5V INPUT V0= 4.0V INPUT V0= 1.0V refer to VREF refer to VREF ( max ) refer to VREF ( min ) FS High output current Low output current Offset voltage Focus search + voltage 4.0 -25 1.45 6.0 0 1.67 -1.59 -1.40 0.17 25 (17) (18) (18) (19)-1 mV V V V V V V dB 37 VFSR 38 VFSR 39 VFZC1 40 VFZC1 41 VFZC2 42 VFZC2 Focus Search Focus search - voltage Focus zero cross1 + voltage (Shock detector) "Shock or FZC"mode refer to VREF "Shock or FZC"mode refer to VREF refer to VREF refer to VREF "FG1 SW=FG2 SW=ON", RL=2kohm "FG1 SW=FG2 SW=OFF" MITSUBISHI ELECTRIC ( 17 / 88 ) 0.07 0.12 FZC Focus zero cross1 - voltage (Shock detector) Focus zero cross2 + voltage Focus zero cross2 - voltage (19)-1 (19)-2 -0.17 -0.12 -0.07 0.5 -0.9 15 0 0.7 -0.7 20 2 0.9 -0.5 (19)-2 43 AFG12ON FG Attenuation FG1,2 ON Attenuation FG1,2 OFF (20) (20) 44 AFG12OFF dB D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(2/6) *IV + FE BLOCK (10)GVFE,BALFE; INPUT ViA(ViB) 1/2Vcc ViA ~ 60k 54 53 1/2Vcc ~ ViB 60k GVFE:input A only.Output voltage is at Pin 32 BALFE=GVFE(A*B) / GVFEB GVFE(A*B);Equal phase signals input to pin 54 and 53 . 60k 60k ViA(ViB) Vi=50mVrms Vref 30k 30k A-B Focus balance2 37 FE1 0 t Focus balance1 18k 220k FS ON FS HOLD Focus gain2 36 35 27k Focus gain1 2k 1k FS OFF 47k 22k FE2 32 33 240k Vo (11)VHFE2,VLFE2; INPUT ViA(ViB) 54 ViB 60k 53 VREF=1/2Vcc VHFE2:Vi=4.0V VLFE2:Vi=1.0V 60k 60k 30k Focus balance1 30k A-B Focus balance2 37 FE1 18k 220k FS ON FS HOLD Focus gain2 36 35 27k Focus gain1 2k 1k FS OFF 47k 22k FE2 32 33 240k Vo 4.7k D-62481-87I MITSUBISHI ELECTRIC ( 18 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (12)IOHFE2,IOLFE2; INPUT ViA(ViB) ViB 60k IOHFE2:Vo=4.0V IOLFE2:Vo=1.0V 54 53 60k 60k 30k Focus balance1 30k A-B Focus balance2 37 FE1 18k 220k FS ON FS HOLD Focus gain2 36 35 27k Focus gain1 2k 1k FS OFF 47k 22k FE2 32 33 240k Vo IOH (IOL) (13)-1VOSFE1,VOSFE2 54 60k 53 60k VREF=1/2Vcc 60k 60k 30k Focus balance1 30k A-B Focus balance2 37 FE1 18k 220k FS ON FS HOLD Focus gain2 36 35 27k Focus gain1 2k 1k VOSFE1 47k FS OFF 47k 19 + 22k FE2 33 VREF 47k 240k 32 VOSFE2 D-62481-87I MITSUBISHI ELECTRIC ( 19 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (13)-2 VOSFE1adj 1 . Focus gain ( R3;D0->3=1 ( 9.8dB ) VosFE1: within +/- 50mV Measurement circuit (13)-1 2 . Focus gain ( R3;D0->3=1 ( 9.8dB ) Measurement circuit (13)-2 Input pin54 add Va( Offet voltage ) VosFE1adj is within +/- 15mV by adjusting Va. 3 . Focus gain ( -11->9.8dB ) Measurement circuit (13)-2 VosFE1adj( pin35) : mesurement 100k 60k 54 53 60k 1.2M 60k 60k Focus offset 38 220k Focus 30k Focus balance2 30k balance1 A-B FE1 Focus gain1 37 18k 220k FS ON FS HOLD Focus gain2 36 35 27k 2k 1k VOSFE1adj 47k FS OFF 19 47k + VREF 47k 22k FE2 33 240k 32 VOSFE2 VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 20 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *FS BLOCK (14)GVFS:input pin 30 ; 27k Vi GVFS=Vo / Vi Vi Vi=10mVrms FS 30 ~ 27k 29 Vo 47k 1.0k Vref + 47k 19 VREF 0 (15)VHFS,VLFS; INPUT Vi t Vi 27k 30 FS 29 27k Vo 1.0k VHFS:Vi=1.0V VLFS:Vi=4.0V 47k 47k + VREF 19 (16)IOHFS,VILFS; INPUT Vi FS Vi 27k 30 27k 29 Vo IOHFS:Vo=4.0V IOLFS:Vo=1.0V 47k 47k IOH (IOL) + VREF 19 (17)VOSFS; FS 27k 30 27k 29 Vo 47k 47k 1k + VREF 19 (18)VFSR + ,VFSR - ; VFSR VFSR + (R1:D8=0,D9->D12=1) (R1:D8=1,D9->D12=1) VREF=1/2Vcc Focus Search 39 CFSR Vo D-62481-87I MITSUBISHI ELECTRIC ( 21 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (19).FZC BLOCK FE1-IN 27k 37 36 FE1 60k B 53 47k 12p 60k Buffer 30k Focus balance2 Focus gain1 36p BW WIDE Focus gain2 FE2+IN 1k 100k 47p 100k FS HOLD FE1 18k Measure Vpin35 220k A-B Focus balance1 35 SHOCK IN ViA ON/OFF A 54 60k 47k 12p 30k Buffer 30k Focus gain3 (offset) FZC OFF FS ON 8 Vpin8 36p BW WIDE FZC OFF ViA C G800 (Vth=+/-0.7V) K200 (Vth=+/-0.12V) 52 HF 30k HF ON/OFF 5k HFOK Detector HFOK FZC/Shock Logic Dout Logic 22 DOUT1 DOUT1 HF-IN 49 HFOUT 48 MRIN 47 HFC 42 0.01u VREF=1/2Vcc 18k 0.001u (19)-1.VFZC1 + ,VFZC1 - (K200); 1.Set R0,D7 (FZC OFF)=1. 2.Set pin 24 (JP1/SG) to "H". 3.Apply HF signal to pin 52 (C input). 4.R0,D11=R0,D10 (Dout Mode)=0. 5.Apply Vref to pin 8 (Shock in). 6.Increase voltage at pin 8 and monitor the DOUT1 pin. 7.When the voltage at the DOUT1 pin changes,the threshold is found. 8.Threshold voltage can be calculated as follows; VFZC1 + =Vpin8 - Vref 9.Apply Vref to pin 8 (Shock in). 10.Decrease voltage at pin 8 and monitor the DOUT1 pin. 11.When the voltage at the DOUT1 pin changes,the threshold is found. 12.Threshold voltage can be calculated as follows; VFZC1 - =Vpin8 - Vref D-62481-87I MITSUBISHI ELECTRIC ( 22 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (19)-2.VFZC2 + ,VFZC2 - (G800); 1.Set R0,D7 (FZC OFF)=1. 2.Apply a voltage to pin8 (shock in) which is much above the comparetors threshold. 3.Set pin 24 (JP1/SG) to "H" 4.R0,D11=R0,D10 (Dout Mode)=0. 5.Apply Vref and no HF signal to pin 52 (C input). 6.Apply HF signal to pin 52 (C input). 7.Adjust ViA to Vref (=input to pin 53 (A input) via 60kohm resister). 8.Increase voltage at pin 53 and monitor the DOUT1 pin. 9.When the voltage at the DOUT1 pin changes,the threshold is found. 10.Threshold voltage can be monitored at pin35 (FE2+IN) and calculated as follows; VFZC2 + =Vpin34 - Vref 11.Apply Vref and no HF signal to pin 52 (C input). 12.Apply HF signal to pin 52 (C input). 13.Adjust ViA to Vref (=input to pin 54 (A input) via 60kohm resister). 14.Decrease voltage at pin 54 and monitor the DOUT1 pin. 15.When the voltage at the DOUT1 pin changes,the threshold is found. 16.Threshold voltage can be monitored at pin35 (FE2+IN) and calculated as follows; VFZC2 - =Vpin35 - Vref (20)AFG1,2ON,AFG1,2OFF; AFG ON (R0;D8=0,R3;D8=1,R3;D9=0) AFG OFF(R0;D8=0,R3;D8=0,R3;D9=0) Vi FG1 2k 34 Vi Vi=0.5mVrms FG2 ~ Vo 2k Vo 31 ~ Vi Vref 47k 0 t 47k + 19 VREF VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 23 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(3/6) (Ta=25deg,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted) Symbol Block 45 46 47 48 49 50 51 GVTE VHTE2 VLTE2 IOHTE2 IOLTE2 VOSTE2 VOSTE1 IV Parameter Gain High output voltage Low output voltage High output current Test Conditions gain value : DCBA=1000(0dB) INPUT Vin= 4.0V INPUT Vin= 1.0V INPUT Vo= 4.0V INPUT Vo= 1.0V refer to VREF refer to VREF refer to VREF Measurement circuit (21) Limit Min Typ Max Unit dB V 12.0 14.0 3.5 4.0 1.0 -2.0 1.0 -40 -15 -15 -3.0 -2.0 3.5 2.0 0 0 0 0 0 4.0 1.0 -6.0 4.0 -25 6.0 0 16.0 (22) (22) 1.5 -1.0 V mA mA (23) (23) + TE Low output current Offset voltage Offset voltage Offset voltage Track balance Gain High output voltage Low output voltage Track gain : 0dB Track balance : 0% Track gain : 0dB Track balance : 0% Track gain : -11 -> 9.8dB Track balance : 0% (24)-1 +40 +15 +15 +3.0 2.0 mV mV mV % dB V (24)-1 52 VOSTE1adj 53 54 55 56 57 58 59 60 61 62 63 BALTE GVTS VHTS VLTS TS IOHTS IOLTS VOSTS VJF VJR VTC + TC VTC - (24)-2 (21) (25) INPUT Vin= 1.0V INPUT Vin= 4.5V INPUT Vo= 4.0V INPUT Vo= 1.0V refer to VREF "JF"Mode, refer to VREF "JR"Mode, refer to VREF refer to VREF refer to VREF (26) (26) 1.5 -4.0 V mA mA High output current Low output current Offset voltage Jump voltage(forward) Jump voltage(reverse) Track cross + voltage Track cross - voltage (27) (27) (28) 25 mV V V mV mV (28) (28) +0.12 +0.15 +0.18 -0.18 -0.15 -0.12 +50.0 +62.5 +75.0 -75.0 -62.5 -50.0 (29) (29) D-62481-87I MITSUBISHI ELECTRIC ( 24 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(3/6) IV+TE BLOCK (21)GVTE,BALTE; 1/2Vcc 1/2Vcc ~ 400k 56 55 ViF ~ ViE 400k ViE(ViF) Vi=50mVrms 400k 400k Vref 0 t 30k Track balance1 30k Track balance2 2 TE1 18k 220k TS ON TS HOLD Track gain2 3 4 27k F-E Track gain1 2k 1k BALTE=GVTE(E*F) / GVTE (%) (GVTE(E*F) ; Equal Phase signals input to pin 56 and 55 ) 19 VREF 47k TS OFF 47k 22k TE2 47k 7 6 + 240k Vo 4.7k VIN 400k (21)VHTE2,VLTE2; 56 55 400k 400k INPUT VIN VHTE2 : VIN=4.0V VLTE2 : VIN=1.0V Track balance2 30k 30k Track balance1 2 TE1 18k 220k TS ON TS HOLD Track gain2 3 4 27k F-E Track gain1 2k 1k VREF=1/2Vcc VREF 19 TS OFF 47k 47k 22k TE2 6 + 47k 240k 7 4.7k Vo D-62481-87I MITSUBISHI ELECTRIC ( 25 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (23)IOHTE2,IOLTE2; 56 55 VIN 400k INPUT VIN IOHTE2 : VO=4.0V IOLTE2 : VO=1.0V 400k 400k 30k Track balance2 30k Track balance1 2 TE1 18k 220k TS ON TS HOLD Track gain2 3 4 27k F-E Track gain1 2k 1k TS OFF VREF 19 47k 47k 22k TE2 6 + 47k 7 240k Vo IOH (IOL) (24)-1VOSTE2,VOSTE1; VREF=1/2Vcc 400k 56 55 400k 400k 400k 30k Track balance2 30k Track balance1 2 TE1 18k 220k TS ON TS HOLD Track gain2 3 4 27k F-E Track gain1 2k 1k VOSTE1 TS OFF VREF 19 47k 47k 22k TE2 6 + 47k 240k 7 VOSTE2 4.7k D-62481-87I MITSUBISHI ELECTRIC ( 26 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (24)-2 VOSTE1adj 1 . Track gain ( R3;D4->7=1 ( 9.8dB ) VosTE1: within +/- 50mV Measurement circuit (24)-1 2 . Track gain ( R3;D4->7=1 ( 9.8dB ) Measurement circuit (24 )-2 Input pin55 add Va( Offet voltage ) VosTE1adj is within +/- 15mV by adjusting Va. 3 . Track gain ( -11->9.8dB ) Measurement circuit (24)-2 VosTE1adj( pin4 ) : mesurement 100k 400k 56 55 400k 1.2M 400k 400k Track offset Track balance1 2 TE1 220k 1 30k Track balance2 30k 18k 220k TS ON TS HOLD Track gain2 3 4 27k F-E Track gain1 2k 1k TS OFF 47k 19 47k 22k TE2 6 + VREF 47k 240k 7 VOSTE2 VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 27 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT TS BLOCK (25)GVTS; GVTS:input Pin 13 Vi Vref 13 6.8k 14 Vo 6.8k 1k 19 47k JF TS + VREF 47k Vi=0.5mVrms JR + 0 t Vi ~ (26)VHTS,VLTS; 47k INPUT VIN VHTS : VIN=1.0V VLTS : VIN=4.0V JF JR TS + VREF 47k + 13 6.8k 14 Vo 6.8k 1k 19 VIN (27)IOHTS,IOLTS; INPUT VIN IOHTS : VO=4.0V IOLTS : VO=1.0V 47k JF JR 13 6.8k TS + VREF 47k + 14 Vo 19 6.8k IOH (IOL) VREF=1/2Vcc VIN D-62481-87I MITSUBISHI ELECTRIC ( 28 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (28)VOSTS,VJF,VJR; JF VJF (JP1/SG="X" R0 ; D13=D3=0, D4=1) VJR (JP1/SG="X" R0 ; D13=D3=1, D4=0) JR 13 6.8k Vo 6.8k 1k 14 19 TS 47k + VREF 47k + (29)VTC + , VTC -; VIN ~ 400k 56 55 R0; D7=0,D11=D10=1 INPUT VIN OUTPUT DOUT1 400k 400k 30k Track balance1 30k F-E Track gain1 Track balance2 VIN=0.16Vpp(VM=0.4Vpp) VM (mV) +200 Vref -200 2 TE1 18k 3 27k f=1kHz TC DET LPF SW 2k Track gain2 100k 47p 100k 1k 220k 4 VM Test : When Dout1 is detected "H" and "L" ,the voltage of pin 4 measure. Track Cross Detector Dout Logic 22 Vo DOUT1( TC HS) VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 29 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(4/6) (Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted) Symbol Block 64 ATG1,2ON 65 ATG1,2OFF TG Measurement circuit Parameter Attenuation TG1,2 ON Attenuation TG1,2 OFF Attenuation TG3 ON Attenuation TG3 OFF Gain Attenuation at SS OFF High output voltage Low output voltage High output current Low output current Offset voltage SS on Offset voltage SS off Slide voltage(forward) Slide voltage(reverse) Test Conditions TG1 SW=TG 2 SW="ON" TG1 SW=TG2 SW="OFF" Limit Min Typ Max Unit dB RL=2kohm (30) (30) (30) 15 0 15 0 10 40 3.5 20 2 20 2 12 14 dB dB dB dB dB 66 ATG3ON 67 ATG2OFF 68 69 70 71 72 73 GVSS ATTSS VHSS VLSS IOHSS IOLSS SS TG3 SW="ON" TG3 SW="OFF" RL=2kohm (30) (31) (31) INPUT Vin= 4.0V INPUT Vin= 1.0V INPUT Vo= 4.0V INPUT Vo= 1.0V "SS on"Mode, refer to VREF "SS off"Mode, refer to VREF "SF"Mode, refer to VREF "SR"Mode, refer to VREF (32) (32) 4.0 1.0 -6.0 1.5 -4.0 V V mA mA 35 25 mV mV V V V dB V V 1.5 -0.2 V mA mA (33) (33) (34) (34) (34) (34) 4.0 -35 -25 6.0 0 0 74 VOSSSon 75 VOSSSoff 76 77 78 79 80 81 82 83 84 VSF VSR VRST GVAP ATTAP VHAP VLAP IOHAP IOLAP APC RESET +0.76 +0.95 +1.14 -1.14 -0.95 -0.76 2.1 2.3 54 4.8 4.0 1.0 -1.0 0.2 1.0 2.5 57 Reset voltage Gain APC OFF voltage High output voltage Low output voltage High output current Low output current Input Vi= 240 mV Input Vi= 100 mV INPUT Vo= 4.0V INPUT Vo= 1.0V Input Vi= 170 mV (35) 51 4.0 3.5 (36) (36) (36) (37) (37) D-62481-87I MITSUBISHI ELECTRIC ( 30 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(4/6) *TG BLOCK (30)ATG ON , ATG OFF; ATG1,2 ON (R0;D8=1,R3;D8=1,R3;D9=0) OFF (R0;D8=1,R3;D8=0,R3;D9=0) ATG3 ON (R3;D10=1) OFF (R3;D10=0) Vi Vref Vi=0.5Vrms 47k TG1 5 11 0 ATGON,ATGOFF=20log V5 Vi t ( V 11 ,V 12 ) VoTG1 TG2 12 TG3 19 + VREF 47k VoTG2 2k Vi ~ VoTG3 2k Vi ~ 2k Vi ~ *SS BLOCK (31)GVSS,ATTSS; INPUT Vi(Pin 15 ) SS OFF SF (R1=D0=D1=1) Vi SR Vref Vi=50mVrms 10k + SS BUF 47k + VREF 17 19 47k 0 t 10k 15 16 22k Vo 1k Vi ~ 6.8k ATTSS= GVSS(SS OFF=OFF) GVSS(SS OFF=ON) VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 31 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (32)VHSS,VLSS; (R1=D0=D1=1) INPUT VIN VHSS : VIN=4.0V VLSS : VIN=1.0V SS OFF SF 10k SS + SS BUF SR 47k + VREF 17 19 47k 15 16 22k 10k VIN Vo 1k 6.8k (33)IOHSS,IOLSS; (R1=D0=D1=1) INPUT VIN IOHSS : VO=4.0V IOLSS : VO=1.0V SS OFF SF 10k SS + SS BUF SR 47k + VREF 17 19 47k 15 16 22k 10k VIN Vo IOH (IOL) 6.8k (34)VOSSS,VSF,VSR; VOSSS1 VOSSS2 VSF VSR (JP1/SG=L,R0;D0=0,D1=0,D2=1) (JP1/SG=L,R0;D0=1,D1=1,D2=0) (JP1/SG=H,R0;D1=1,D0=0) (JP1/SG=H,R0;D1=0,D0=1) SS OFF SF 10k SS + SS BUF SR 47k + VREF 17 19 47k 15 16 22k Vo 1k VREF=1/2Vcc 10k 6.8k D-62481-87I MITSUBISHI ELECTRIC ( 32 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (35)GVAP; Input signal Vi Vi=10mVPP Va=170mV ~ 41 40 Vo Vi 170mV Vi=10mVp-p + APC 0 t (36)ATTAP,VHAP,VLAP; APC OFF (R1;D4=0) , APC ON (R1;D4=1) Input Vin Vin 41 40 Vo 1k + APC (37)IOHAP,IOLAP; APC ON (R1;D4=1) IOHAP:VO=4.0V IOHAP:VO=1.0V Vo IOHAP(IOHAP) 41 40 Vin + APC D-62481-87I MITSUBISHI ELECTRIC ( 33 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(5/6) (Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted) Symbol Block 85 GVFE(max) 86 GVFE(min) Parameter max gain(FE) min gain(FE) Measurement circuit Test Conditions "Focus gain"Mode DCBA=1111 "Focus gain"Mode DCBA=0000 Limit Min Typ Max Unit dB dB (10) +20.0 +23.0 +26.0 (10) 0.0 +3.0 +6.0 87 GVTE(max) 88 GVTE(min) ADJ max gain(TE) min gain(TE) "Track gain"Mode DCBA=1111 "Track gain"Mode DCBA=0000 (21) +20.0 +23.0 +26.0 (21) dB dB 0.0 +3.0 +6.0 89 BALFE(max) 90 BALFE(min) 91 BALTE(max) 92 BALTE(min) 93 VPhFE 94 VPhFE 95 VPhTE 96 VPhTE 97-1 max balance(FE) min balance(FE) max balance(TE) min balance(TE) Phase error + voltage Phase error - voltage Phase error + voltage Phase error - voltage Focus Balance output Voltage FBAL Ajustment compraretor Threshold+ FBAL Ajustment compraretor ThresholdBalance error + voltage (TE) Balance error - voltage (TE) Cut off frequency "Focus balance"Mode DCBA=1111 "Focus balance"Mode DCBA=0000 "Track balance"Mode DCBA=1111 "Track balance"Mode DCBA=0000 "Focus gain" Mode Phase error(90+30)deg. "Focus gain" Mode Phase error(90-30)deg. "Track gain" Mode Phase error(90+30)deg. "Track gain" Mode Phase error(90-30)deg. Vin=2.0p-p, Refer to VREF "Focus balance"Mode , Refer to VREF "Focus balance"Mode , Refer to VREF "Track balance"Mode ,Ein=Vref-0.2V "Track balance"Mode ,Ein=Vref+0.2V C(Pin 18 )=2200pF MITSUBISHI ELECTRIC ( 34 / 88 ) (10) +23.4 +26.4. +29.4 (10) -34.8 % % % % V V V V Vp0 -31.8 -28.8 (21) +23.4 +26.4 +29.4 (21) -34.8 -31.8 -28.8 (42) 3.1 (42) 1.5 (43) 3.1 (43) (44-1) + + - 3.3 1.7 3.3 1.7 0.7 15 -15 3.0 2.0 1.0 3.5 1.9 3.5 1.9 1.5 0.4 VBAL 97-2 V thFBAL + 97-3 V thFBAL - (44-2) 5 -25 25 -5 3.2 2.2 1.3 mV mV V V kHz (44-2) 98 VBALT 99 VBALT 100 fHADJ + - (45) 2.8 (45) 1.8 (46) 0.7 D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(5/6) (38)GVFE(max),GVFE(min): refer to GVFE measurement (show to (10)) GVFE(max) ; R3 ; D0->D3=1 GVFE(min) ; R3 ; D0->D3=0 (39)GVTE(max),GVTE(min): refer to GVTE measurement (show to (21)) GVTE(max) ; R3 ; D4->D7=1 GVTE(min) ; R3 ; D4->D7=0 (40)BALFE(max),BALFE(min): refer to BALFE2 measurement (show to (10)) BALFE(max) ; R2 ; D0->D3=1 BALFE(min) ; R2 ; D0->D3=0 (41)BALTE(max),BALTE(min): refer to BALTE2 measurement (show to (21)) BALTE(max) ; R2 ; D4->D7=1 BALTE(min) ; R2 ; D4->D7=0 60k 1KHz 60k 53 30k TE1 (42)VPhFE + , VPhFE - ; ViB 54 60k A-B 30k Focus gain adjustment mode (show to (78/88)) (R3;D3=1,D0->D2=0) ViA(ViB) signal; Phase shift signals (90+/-30deg.) refer to JP1/SG at Focus gain mode. ViA 60k 2 JP1/SG 1KHz 24 JP1 input Circuit 220k 47p gain adjustment ADJ GAIN CMP XOR 68k 1 220k Charge VREF=1/2Vcc 18 3 20 1u ViA(ViB) signal; Phase shift signals (90deg.) refer to JP1/SG at Focus gain mode. 1 1u Vo ViA(ViB) signal; Phase shift signals (90+30deg.) refer to JP1/SG at Focus gain mode. 1 2 2 3 3 5 Vo 2.5 5 Vo 3.3 0 0 D-62481-87I MITSUBISHI ELECTRIC ( 35 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (43)VPhTE + , VPhTE -; Track gain adjustment mode (show to ((76/88)) (R3;D7=1,D4->D6=0) ViE(ViF) signal; Phase shift signals (90+/-30)deg. refer to JP1/SG at Track gain mode. 1KHz ViE 400k 55 56 400k 30k 400k Track balance1 Track gain1 F-E 30k Track balance2 TE1 ViF 400k 24 JP1 input Circuit gain adjustment 1KHz 18 1u 1u 24 Vo VREF=1/2Vcc (44-1)VBAL ; 200k Focus balance adjustment mode (show to (74/88)) (R2;D3=1,D0->D2=0) INPUT Vi (Pin 46 ): fc=12MHz AM fmod=500Hz A=1.0V, B=0.8V Vi 46 0.0047u Vo V 46 45 Vref A B FBAL t (44-2)VthFBAL+,INPUT pin44( COMP IN) Vi 44 V 27 Vref Focus balance adjustment Dout Logic 0 Vth - Vth + V 44 1u 18 20 27 Dout2 V0 D-62481-87I MITSUBISHI ELECTRIC ( 36 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (45)VBALT + , VBALT -; Track balance adjustment mode (show to (72/88)) (R2;D7=1,D4->D6=0) INPUT Vi (Pin 55 ). Vi VBALT + :Vi=Vref-0.2V VBALT - :Vi=Vref+0.2V 400k 55 56 400k 30k 400k Track balance1 Track gain1 Track gain2 F-E 30k Track balance2 TE2 TE1 Track balance adjustment 18 20 1u 1u Vo (46)fHADJ; Track gain adjustment mode (show to (76/88)) (R3;D7=1,D4->D6=0) ViE 400k INPUT ViE(ViF) Vo GVADJ = ViE (ViF) fHADJ ; 3dB down (refer to 500Hz) 55 400k 30k 400k 56 Track balance1 Track gain1 400k F-E 30k Track balance2 TE1 ViF gain adjustment 18 20 Vo 2200p 1u VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 37 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ELECTRICAL CHARACTERISTICS(6/6) (Ta=25deg.,Vcc=5V,f=1kHz,CBA=100,D=0,unless otherwise noted) Symbol Block 101 102 103 104 105 106 107 108 109 Vthc1+ Vthc1Vhy1s Vthc2+ Vthc2Vhy2s fLC UAO VCOMPOF UA ADJ CMP Parameter Threshold Threshold Hysteris Threshold Threshold Hysteris Cut off frequency Output Comp input offset Test Conditions refer to VREF (CMP OFFSET SW=ON) refer to VREF (CMP OFFSET SW=ON) refer to VREF (CMP OFFSET SW=ON) Measurement circuit Limit Min Typ Max Unit mV mV mV mV mV mV kHz mV mV (47) (47) (47) (47) (47) (47) (48) (49) 3 -17 8 5 -25 15 0.7 -10 10 -10 20 15 -15 30 1.0 0 17 -3 32 refer to VREF (CMP OFFSET SW=OFF) refer to VREF (CMP OFFSET SW=OFF) refer to VREF (CMP OFFSET SW=OFF) C(Pin 20 )=4.7nF refer to VREF refer to VREF 25 -5 45 1.3 +10 -4.0 (50) -25.0 -13.0 D-62481-87I MITSUBISHI ELECTRIC ( 38 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT note(6/6) (47)Vthc1,2 + , Vthc1,2 - ,Vhy1,2s; Vthc1+ , Vthc1- ,Vhy1s;CMP OFFSET=ON (Focus offset1 adjustment mode (show to (83/88)) Vthc2+ , Vthc2- ,Vhy2s;CMP OFFSET=OFF (Focus gain adjustment mode (show to (78/88)) V 27, V 22 Vref 22 Vo DOUT1 Vo DOUT2 Adjustment 27 0 Vth - Vth + V 20 18 20 Vhy1,2s=Vthc1,2 + - Vthc1,2 - 1u (48)fLC; Track gain adjustment mode (show to (72/88)) (R3;D7=1,D4->D6=0) INPUT ViE(ViF) GVADJ = Vo ViE (ViF) fHADJ ; 3dB down (refer to 500Hz) ViE 400K 55 400K 400K Track balance1 Track gain1 400K 56 F-E Track balance2 TE1 ViF gain adjustment 18 20 Vo 4.7n VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 39 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (49)UAO Focus servo hold mode AUT FSON(R1 D5)=0,FS HOLD (R1 D6)=0,FS OFF (R1 D7)=0, Focus gain adjustment mode FGAIN (R3 D13)=1, Amplitude of adjustment UA signal RS D0=0,RS D1=0,RS D2=0, Vi 24 VREF=1/2Vcc Vi f=2kHz 5V JP1/SG RS D0,D1,D2=0 230k 37 FE1 18k 220k FS ON Focus gain2 FS HOLD 33 FE2 32 47k Vo 36 35 1u 47k 22k 27k Vref 2k t 1k FS OFF (50)VCOMPOF Adjustment.com. Buffer Amp. 44 19 V0 220k VREF D-62481-87I MITSUBISHI ELECTRIC ( 40 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT TEST CIRCUIT 2 2 1 1 1 3.3k 18k 0.033u 2 3M 56 55 54 53 52 51 50 49 48 47 46 45 44 43 Track Offset SW 400k 60k 60k FBAL 0.001u 30k 5.0k 1 2 3 100n 400k 30k 30k Track gain1 18k Track balance1 F-E 42 100k 3.0M HF 1.2M MR/HFOK 10k 10k APC Focus offset Focus gain2 41 1k 40 39 38 Focus Offset SW 4 1k Track gain2 1k TS HOLD Track balance2 Focus balance2 5 47k 220k TS 2k ON TE1 30k 30k 18k 6 4.7k TG1 TS OFF 22k TC 37 1.2M FE1 A-B 1k Focus balance1 7 8 9 10 2k 2k TE2 Shock FS ON 220k FS HOLD 36 100n FZC OFF TG2 TG3 JR JF Focus gain1 35 34 FG1 2k 47k 22 33 FE2 240k 11 2k SS OFF TS FS OFF 32 2k 12 SF VREF 47k 56k 47k Reset FG2 31 27k 13 4.7k SS 10k SS BUF SR 47k 30 FS 14 29 2.2k 15 16 17 18 19 20 21 22 23 24 25 26 27 28 22k TEST CONTROLLER 47u D-62481-87I MITSUBISHI ELECTRIC ( 41 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT APPLICATION CIRCUIT 22 10u 1k 560 100k a Track offset SW 56 55 54 53 52 51 50 49 48 47 46 45 44 43 400k 60k 60k FBAL 1 2 3 4 5 6 + Track gain2 1k TS HOLD 30k 5.0k 400k 30k 30k Track gain1 18k Track balance1 F-E 10k 10k Track balance2 42 41 APC Focus offset HF MR/HFOK 40 39 38 Focus offset SW a Focus balance2 Focus gain2 220k TS 2k ON TE1 30k 30k 18k TG1 TS OFF 22k TC 37 36 35 34 FG1 FS HOLD FE1 A-B 1k Focus balance1 7 8 9 10 11 2k TE2 Shock FS ON 220k FZC OFF TG2 TG3 JR TS SS OFF JF Focus gain1 22k 33 FE2 FS OFF 32 31 30 F.Act 12 SF VREF 47k 56k 47k Reset FG2 T.Act 13 14 10k SS SR SS BUF 47k FS 29 15 16 17 18 19 20 21 22 23 24 25 26 27 28 + CD DSP Bias (1/2Vcc) SL.Motor MCU MLA Units Resistance :Ohm Capacitance:F D-62481-87I MITSUBISHI ELECTRIC ( 42 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Functional Description of M62481FP *MCU Interface *Servo Circuit *Basic control software (Note) This description is based on the typical use of M62481FP. D-62481-87I MITSUBISHI ELECTRIC ( 43 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT D-62481-87I MITSUBISHI ELECTRIC ( / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT SERVO CONTROL COMMAND TABLE *Command Table Register RS R0 R1 R2 R3 Register RS R0 R1 R2 R3 D15 X 0 0 1 1 D14 X 0 1 0 1 FGAIN D13 X KICK DIS BW WIDE D12 X HFD MODE D11 X D10 X D9 X TBAL D8 X SHOCK EN DOUT MODE Focus Search FS4 FS3 FS2 FS1 Focus offset (3bit) FS0 Track offset (3bit) TGAIN D4 X FBAL TG3 G2 INV HI GAIN D7 X FZC OFF FS OFF D6 X TS HOLD FS HOLD D5 X BRAKE AUT FSON D3 X TS SERVO D2 ADJ AMP2 D1 ADJ AMP1 D0 ADJ AMP0 SS PLAY ADJ FO2 SS SERVO ADJ TO1 ADJ TO2 LASER ON ADJ FO1 Track Balance (4bit) Track gain (4bit) Focus Balance (4bit) Focus gain (4bit) ( RS: Shift resistor, X : not used ) * Command Timing Chart 1). MSD D0 D1 D2 D3 D4 D5 D6 D7 tsu D8 th D9 D10 D11 D12 D13 D14 D15 H (keep) Data is loaded into Servo IC Register MBK twck twck twl MLA 1/fck td 2). MSD D0 D1 D2 D3 D4 D5 D6 D7 tsu D8 th D9 D10 D11 D12 D13 D14 D15 MCK twck twck twl Data is not loaded into Servo IC Register MLA 1/fck ( While the MLA is set to "L", clock pulses to the lacth register must be disabled.) td Symbol fck twck tsu th td twl Parameter Clock frequency Clock width Set-up time Hold time Delay time Latch width Conditions Min Limits Typ Max Unit kHz u sec u sec u sec u sec u sec 2 0.1 2 2 1 MITSUBISHI ELECTRIC ( 44 / 88 ) 125 4 0.2 4 4 4 500 D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT SERVO CONTROL (1). FOCUS * LASER ON MODE Laser OFF Laser ON R1; D4 LASER ON 0 1 FUNCTION *APC Amp OFF *APC Amp ON *F-1). FZC Shock Circiut HFOK (HFOK And MR Detector logic) FG1 (Vth=+ 0.7V) G800 TG1 FG2 FE1 LPF ( ADJUST) 100k 47p 100k FZC SHOCK K200 TG2 LOGIC FZC SHOCK ( Dout Logic ) SHOCK IN 8 (Vth=+ 0.12V) Q FZC ( Focus and Hold Block ) FZC OFF (R0;D7) D-62481-87I MITSUBISHI ELECTRIC ( 45 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT FE1 LPF 700mV 120mV -120mV -700mV HFOK G800 Q FF1 K 200 Q FZC F-1-1) FZC Shock Logic FZC OFF ( R0;D7 ) HFOK (HFOK And MR Detector logic) JP1H ( JP1 Input Circiut) SHOCK EN ( R0;D8 ) HI GAIN ( R3;D8 ) G2 INV ( R3;D9 ) FF1 FF2 FG2, TG2 G800 K200 FG1, TG1 FZC SHOCK ( Dout Logic ) FF3 Q FZC (Focus And Hold Logic) D-62481-87I MITSUBISHI ELECTRIC ( 46 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT D-62481-87I MITSUBISHI ELECTRIC ( 47 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *F-3). Focus Search Circiut ( R1; D8 -> D12 ) Pin 39 VCFSR ; Voltage : 2.5 -> 5.0 V ( 16 steps ) 0 -> 2.5 V ( 16 steps ) 156 mV/step ( R1; D12=1 ) - 156 mV/step ( R1; D12=0 ) FS4 (D12) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 FS3 (D11) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 FS2 (D10) 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 FS1 (D9) 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 FS0 (D8) 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Pin 39 VCFSR(V) 0.908 1.009 1.111 1.214 1.321 1.424 1.529 1.635 1.754 1.856 1.961 2.067 2.178 2.283 2.391 2.500 2.500 2.611 2.723 2.834 2.946 3.058 3.169 3.280 3.393 3.505 3.616 3.727 3.838 3.949 4.060 4.169 FS2 ( R1;D10) 10k 39 FS3 ( R1;D11) 1 1 1 1 1 FS0 ( R1;D8) 1 10k 1 0 1 1 FS1 ( R1;D9) 10k 0 0 CFSR VREF =1/2Vcc 1k FS4 ( R1;D12) D-62481-87I MITSUBISHI ELECTRIC ( 48 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT D-62481-87I MITSUBISHI ELECTRIC ( 49 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *T-2). BRAKE DETECTOR ( R0; D5=1 ) Jump Brake operation INPUT CONDITION MIRROR 1 ("Mirror") 0 ("Track") TRACK CROSS DET "1" TC Detector OUTPUT Brake signal OPEN CLOSE (note)Vcc=5V "0" -62.5mV 62.5mV MIRROR TRACK MIRROR TRACK MIRROR MR Detector VTC + VTC - TE Signal TC Detector Brake signal HF MR Detector DQ T Q Brake signal TE TC Detector D-62481-87I MITSUBISHI ELECTRIC ( 50 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (example)Single track jump Start SEND Jump Pulse Command R0; D13=1 ( Jump forward ) (1) DOUT2=H? (mirror?) Yes KICK PULSE JF No (2) time over? No Yes TS ON TS OUT BRAKE PLUSE JR TS ON JP1H= "0"-->"1" JP!L= "1"-->"0" (3) 1 TC OUT 0 1 JP1H 0 Brake pulse generation wait 300 uSec TS ON (R0; D6,D4,D3=0) (4) Track settling wait 5mSec (1) (2) (3) (4) Brake cancel end D-62481-87I MITSUBISHI ELECTRIC ( 51 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *T-3). Track Kick Logic ( R0 ;) Internal JP1H 0 0 1 0 0 0 0 1 1 1 1 Internal JP1L 0 1 0 X X X X 0 0 0 0 D13 KICK DIS 1 1 1 0 0 0 0 0 0 0 0 D4 D3 Switches JF JR TS SERVO X X X 0 0 1 1 0 0 1 1 X X X 0 1 0 1 0 1 0 1 Function No Track Jump JP1-Track Jump Forward JP1-Track Jump Reverse No Track Jump Track Jump Reverse Track Jump Forward No Track Jump No Track Jump JP1 Direct Command JP1 Direct Command No Track Jump open close open open open close open open close open open open open close open close open open open open close open D-62481-87I MITSUBISHI ELECTRIC ( 52 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT S). SS Block SF JP1 Input Circiut Dout Logic SR SS Detector SS OFF SS PLay Logic 10k SS SS OFF VREF = 1/2Vcc 15 10k SS+IN 16 SS-IN SS BUF 17 SS OUT *S-1). SS PLAY Logic ( R0; ) Internal JP1L X 0 1 0 1 X D1 D0 SS OFF 0 1 1 0 0 1 close close close close close open Switches SF open open open close open open SR open close open open open open Function Sledge Servo OFF Sledge Move Reverse Sledge Move disabled Sledge Move Forward Sledge Move disabled Sledge Servo ON SS SERVO 0 0 0 1 1 1 *S-2). SS Detector SS + IN 15 VREF=1/2Vcc SS PLAY (R0; D2) SS+IN Pin 15 R0;D2 SS PLAY Switch SS BUF open open open close SS DET ( Dout Logic) + SS DET 0 0 1 1 (Dout Logic) SS BUF 0 1 0 1 L L H H D-62481-87I MITSUBISHI ELECTRIC ( 53 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *A-1). JP1 INPUT Circiut JP1/SG 24 16k JP1H (Track Kick Logic) JP1H (FZC Shock Logic) UA (Adjust) 16k 8k 8k 4k 2k JP1L (Track Kick Logic) JP1L (SS Play Logic) VREF = 1/2Vcc UA: SG( Internal) RS;D0 RS;D1 RS;D2 0 1 2 3 4 5 6 7 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Ua(V) +0.83 +0.5 +0.36 +0.28 +0.23 +0.19 +0.17 +0.15 Pin24; JP1/SG 0 1 JP1H 0 1 0 JP1L 1 0 0 ( Vref (Standard)) Tristate D-62481-87I MITSUBISHI ELECTRIC ( 54 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *T-4). Track Cross Detecter Block Track Cross circuit TE1 LPF 39k < 2.5625V S Q Q TC HS ( Dout Lgic) 1k R 1k 39k D T Q Q Brake signal ( Track Hold Logic ) > 2.4375V TC LS ( Dout Logic ) D MR (HFOK And MR Dectector ) MR T Q Q DIR ( Dout Logic ) 100k TE1 output 47p TC DET LPF SW 100k R3;D11 FBAL TC DET LPF SW open close 0 1 *L-1).HFD MODE ( R0;D12) Mirror Detector MR 28 HFD HFOK Detector HFOK R0;D12 HFD MODE HFD OUTPUT HFOK MR 0 1 D-62481-87I MITSUBISHI ELECTRIC ( 55 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *Mirror Detector Circiut MR IN 47 Peak hold Bottom hold Peak hold (Low speed) 27.5k 20k Brake R0;D5 13k 26k 18.5k 20k S R Q MR ( Internal) BW WIDE R1;D13 43 MRC VREF = 1/2Vcc Brake Bit * MR ratio Brake ( R0; D5) 0 1 Switch Close Open V 47 MR( Ratio ) 0.41 :MR-ON 0.47 :MR-OFF 0.52 :MR-ON 0.58 :MR-OFF Vref B A t MR(Ratio) = B = 0.41 :MR-ON,0.47 :MR-OFF MR A ( normal ) = 0.52 :MR-ON, 0.58 :MR-ON ( brake ) MR-ON HFC MR-OFF *HFOK Detector Circiut 42 5.1k 51k 51k MR IN 47 HF OUT 48 51k 51k Vref-0.19V 10k HFOK VREF = 1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 56 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *L-2). Jump/Sledge Pulse Current Vcc R I 9 IREF IJF,IJR= Vcc-VBE 2R ISF,ISR= Vcc-VBE R (example) Vcc=5(V),VBE=0.7(V),R=100(k) IJF,IJR=21.5 (uA) ISF,ISR=43.0 (uA) D-62481-87I MITSUBISHI ELECTRIC ( 57 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT * L-3). BW WIDE ( R1 ; D13 ) D13 1 0 BW WIDE 1 time speed 8 times speed Track LPF ( kHz ) Focus LPF( kHz) MR Detector Cut off Frequency(kHz) 66 265 70 280 30 100 * L-4).TG3 ( R3; D10 ) D10 0 1 TG3 SW OFF ON D-62481-87I MITSUBISHI ELECTRIC ( 58 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT D-62481-87I MITSUBISHI ELECTRIC ( 59 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Focus Servo System1 ( FE Amp, FS Amp, Focus offset ADJ, Focus gain ADJ ) Focus offset Method I b pin 31 FG2 FE1 -IN FE2 +IN 0.1P FE1 FG1 FE2 -IN FE2 OUT 37 B B 36 Focus gain2 35 34 33 FG1 32 53 B 60k -B 47k 12p Buffer 36p 30k Focus Balance2 Focus gain1 FE2 0.1P A A FS HOLD BW WIDE A-B 18k FE1 2k 220k FS ON 22k 54 A Focus offset Method II 60k -A 47k 12p Buffer 36p 30k BW WIDE a Focus Balance1 FG SIG JP1/SG Focus gain3 (offset) 1k FS OFF 24 JP1 Input Circuit Focus offset Method II 230k FG RET Focus gain judgment FZC OFF FZC Shock Circuit 100k COMP IN 100k 47p ADJ FO2 44 ADJ FBAL a b FS Focus offset Method I ADJ FO1 Focus offset judgment Foucs Search Circuit 31 FG2 30 FG2 FS -IN 29 FS OUT 38 OSF Focus Offset Voltage 39 CFSR VREF=1/2Vcc Focus Actuator pin 32 FE2 OUT ( Note ) Resistors and Capacitors without value are externals. D-62481-87I MITSUBISHI ELECTRIC ( 60 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Focus Search Circuit Focus Search Circuit CFSR 39 FS OUT FS VREF FG2 31 FG2 30 FS-IN 29 Focus Actuator FE2 OUT Pin 32 VREF=1/2Vcc (note)Resistors and Capacitors without value are externals except the resistor for the adjustment. D-62481-87I MITSUBISHI ELECTRIC ( 61 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Focus Servo System2 ( HF Amp, Focus Balance Detector ) DSP min.18~max.18k HF -IN AB HF OUT MR IN FBI FBO 51 0.2p C 52 C 49 48 47 46 34 45 34 COMP IN 44 30k 5k C 1k 50p FBAL ADJ2 0.1p 60k HF FBAL Focus Balance judgment B 53 B 5k 11k 10k B 0.1p A A 60k 54 A HFC 10k HF signal t 42 51k High Speed Bottom Hold Output Low Speed Bottom Hold Output HFOK Detector 51k 5.1k HFOK 28 34 HFD Bottom Hold circuit Low Speed Bottom Hold circuit R1;D13 BW WIDE (Cut off frequency) Mirror Detector MR (Internal) Peak Hold circuit R0;D5 Brake (MR ratio) 43 MRC ( Note ) Resistors and Capacitors without value are externals. VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 62 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Tracking Servo System 1 ( TE Amp, TS Amp, Track offset ADJ, Track gain ADJ ,Track balance ADJ)) b Track offset Method I TE1 -IN TE1 TE2 -IN pin 11 TG1 2 4.5p 1.5p BW WIDE 3 Track gain2 4 5 TG1 TS HOLD 6 TE2 -IN TE2 OUT 7 E 55 E Track offset Method II 30k 400k E BW WIDE Track Balance2 Track gain1 TE2 22k TS OFF a 4.5p 1.5p F-E 30k 400k Track Balance1 18k TE1 220k 2k TS ON F 56 F Track gain3 ( Offset) 1k TG RET F TG SIG Track gain judgment JP1/SG 24 JP1 Input Circuit 270k OST 1 Track Offset Voltage JF TC Detector Circuit 100k ADJ TBAL Track Balance judgment Track offset 100k 47p Method II ADJ FBAL COMP IN 44 ADJ T02 a b JR TC DET LPF SW TS ADJ T01 Track offset judgment TG2 TG3 Track offset Method I 11 TG2 12 TG3 13 TS -IN 14 TS OUT TE2 OUT pin 7 SS Amp. pin 15 Track Actuator ( Note ) Resistors and Capacitors without value are externals. VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 63 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Tracking Servo System 2 ( SS Amp, S-1).SS Play Block and S-2). SS Detector Block ) SF JP1 Input Circuit Dout Logic SR SS Detector SS OFF SS PLay Logic 10k SS SS OFF 15 pin 14 10k SS +IN 16 SS BUF SS -IN 17 SS OUT TS OUT Sledge Actuator VREF=1/2Vcc ( Note ) Resistors and Capacitors without value are externals. MITSUBISHI ELECTRIC ( 64 / 88 ) D-62481-87I MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Adjustment Block I ) All adjustment are done via internal Adj Comp. II) No capacitor at CLPF pin, MCU A/D convertor at CLPF pin. All adjustment are done via A/D in MCU. All adjustment signals ( Focus offset method 1.2 , Track offsert method 1.2, Focus balance , Track balance , Focus gain and Track gain ) are aviable at CLPF pin . I) CLPF II) A/D MCU 20 Track Cross Detector Block FZC Shock Block ADJ TBAL 470 3k 100k 68k ADJ FO2 CMP OFFSET 68k 330k 2.2k TC DET LPF SW 6.8k Switched Adj.Com. 1 2 47p 47p TE1 output (Internal) FE1 output (Internal) ADJ TO2 Dout Logic TS OUT 14 29 44 ADJ TO1 FS OUT *1) ADJ FO1 COMP IN ADJ FBAL FG RET A-B output (Internal) F-E output (Internal) 220k 47p Switches comparator input is selected by ADJ-FBAL Switch control signal ADJ-FBAL Switch OPEN ADJ-FBAL Switch CLOSE Switching Comparetor Input 1 2 TG RET XOR 220k Active Not Active Not Active Active Track Kick Block JP1H(Internal) FG SIG 230k UA JP1/SG 24 JP1 Input Circuit TG SIG 270k VREF=1/2Vcc 2 37 TE1-IN FE1-IN 18 DETFIL *1) The IC is protected , if more than one of the switches (ADJ GAIN,ADJ TBAL, ADJ TO2,ADJ FO2,ADJ TO1,ADJ FO1,ADJ FBAL FG RET or TG RET) are closed at the same time. It is not a resonable and specified adjustment mode,if more than one of the switches ADJ GAIN,ADJ TBAL,ADJ TO2,ADJ FO2,ADJ TO1,ADJ FO1,ADJ FBAL are closed at the same time. ( Note ) Resistors and Capacitors without value are externals. D-62481-87I MITSUBISHI ELECTRIC ( 65 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Adjustment Switch * ADJ FO1 (R1;D3) BIT R1 ; D3 ADJ FO1 SWITCH ADJ FO1 Remark 0 1 OPEN CLOSE Focus offset I adjustment * ADJ FO2 (R1;D2) BIT R1 ; D2 ADJ FO2 SWITCH ADJ FO2 Remark 0 1 OPEN CLOSE Focus offset II adjustment * ADJ TO1 (R1;D1) BIT R1 ; D1 ADJ TO1 SWITCH ADJ TO1 Remark 0 1 OPEN CLOSE Track offset I adjustment * ADJ TO2 (R1;D0) BIT R1 ; D0 ADJ TO2 SWITCH ADJ TO2 Remark 0 1 OPEN CLOSE Track offset II adjustment D-62481-87I MITSUBISHI ELECTRIC ( 66 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT D-62481-87I MITSUBISHI ELECTRIC ( 67 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT * TBAL ( R0; D9 ) Control bit R0; D9 TBAL ADJ TBAL Remark 0 1 open close Track Balance adjustment *FBAL ( R3; D11), FGAIN ( R3; D13), TGAIN ( R3; D12) R3; D11 FBAL Control bit R3; D13 FGAIN Switches R3; D12 TGAIN FG SIG open open close close open open close close FG RET open open close close open open close close TG SIG open close open close open close open close TG RET open close open close open close open close ADJ GAIN ADJ FBAL Remark 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 open close close close open open open open open open open open open open close close Track Gain adjustment Focus Gain adjustment Focus Balance adjustment Control circuit example R3;D11(FBAL) ADJ GAIN R3;D12(TGAIN) R3;D13(FGAIN) CMP OFFSET R0;D9(TBAL) * MLA/DIS pin 23 MLA/DIS 0 1 ( Discharge ) discharge close open Remark D-62481-87I MITSUBISHI ELECTRIC ( 68 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT APC System Vcc R1; D4 LASER ON/OFF Vcc 100 7.353k 40 APC OUT V40 1.25V 1.157k 500k 41 APC IN V41 Laser Diode (note1)Resistors and Capacitors without value are externals. (V41=170mV-->V40=2.50V) D-62481-87I MITSUBISHI ELECTRIC ( 69 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT REGISTER LOADING D T R Q 26 25 23 1). MSD Data is preloaded into latch Communication between DSP and MCU on the same clock and data line,but servo ICs latches not overwritten. D12 D13 D14 D15 H (must be) H keep MCK MLA Data is loaded into servo IC register Data is preloaded into latch Communication between DSP and MCU on the same clock and data line,but servo ICs latches not overwritten. 2). MSD D12 D13 D14 D15 H (must be) MCK MLA Data isnot loaded into servo IC register Reset Command Condition Power on reset condition D15 R0 R1 R2 R3 D14 D13 0 0 1 0 D12 0 0 0 0 D11 0 0 0 0 D10 0 0 1 0 D9 0 0 0 0 D8 0 0 0 0 D7 0 1 1 1 D6 1 0 0 0 D5 0 0 0 0 D4 0 0 0 0 D3 0 0 1 1 D2 0 0 0 0 D1 0 0 0 0 D0 0 0 0 0 D-62481-87I MITSUBISHI ELECTRIC ( 70 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT Bias amp and Reset Power on reset 56k 47k VREF 47k Reset 47k Logic (I/F) 19 VREF 47uF D-62481-87I MITSUBISHI ELECTRIC ( 71 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT ADJUSTMENT * (1) TRACK BALANCE ( 16steps , 3.75%step ) Recommended Register Settings D15 R0 R1 R2 R3 0 0 1 1 D14 D13 0 1 0 1 1 X X 0 D12 X X X 0 D11 0 X X 0 D10 0 X X X D9 1 X X X D8 X X X X D7 X X D X D6 X X C X D5 X X B X D4 X X A X D3 X 0 X X D2 X 0 X X D1 X 0 X X D0 X 0 X X (note) SW control OPEN*****"0" CLOSE****"1" 45k 36.3k 29.3k 51.5k h g f e Track gain 1 Track gain 2 30k 30k 30k F-E TE1 30k Track gain 3 (offset) 106.5k 45k 18.7k 5.1k a b c d ADJ TO2 3k ADJ TBAL ADJ FO1 ADJ FO2 ADJ TO1 68k Dout Logic 68k 330k 2.2k 100k ADJ GAIN 470 VREF=1/2Vcc Discharge CMP OFFSET 20 CLPF D-62481-87I MITSUBISHI ELECTRIC ( 72 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) .Track Balance R2;D7 R2;D6 R2;D5 ( R2; ) R2;D4 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 a 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 b 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 c 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 d 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 e 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 f 0 0 1 0 0 0 1 0 0 0 1 0 1 1 0 1 g 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 h 1 0 0 1 1 0 0 1 1 0 0 1 0 0 1 0 rate(%) -31.8 -27.0 -22.4 -18.6 -15.4 -11.3 - 7.2 - 3.9 0 3.6 7.1 9.5 15.1 19.5 21.9 26.4 D-62481-87I MITSUBISHI ELECTRIC ( 73 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *FOCUS BALANCE ( 16steps ) Recommended Register Settings R0 R1 R2 R3 D15 0 0 1 1 D14 D13 0 1 0 1 0 X X 1 D12 X X X 0 D11 0 X X 1 D10 0 X X X D9 0 X X X D8 X X X X D7 X X X X D6 X X X X D5 X X X X D4 X X X X D3 X 0 D X D2 X 0 C X D1 X 0 B X D0 X 0 A X DSP AB 0.1p 60k HF -IN HF OUT FBI 51 34 49 34 48 34 46 34 FBO 45 34 COPM IN 44 A A 54 A 1k 50p 10k HF 0.1p FB B B 60k 5k 11k 53 B 47k 10k 45k 12p 47k BW WIDE 36.3k 29.3k 51.5k h g f e 12p 36p BW WIDE 36p 30k Buffer Buffer 30k 30k A-B Focus Balance 2 FE1 Amp. Focus Balance1 30k ADJ FBAL 3k 106.5k 45k 18.7k 5.1k ADJ ADJ ADJ ADJ FO1 FO2 TO1 TO2 6.8k 100k 470 68k 330k 2.2k Dout Logic a VREF=1/2Vcc b c d Discharge CMP OFFSET 20 CLPF D-62481-87I MITSUBISHI ELECTRIC ( 74 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) .Focus Balance R2;D3 R2;D2 R2;D1 ( R2; ) R2;D0 a 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 b 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 c 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 d 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 e 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 f 0 0 1 0 0 0 1 0 0 0 1 0 1 1 0 1 g 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 h 1 0 0 1 1 0 0 1 1 0 0 1 0 0 1 0 rate(%) -31.8 -27.0 -22.4 -18.6 -15.4 -11.3 - 7.2 - 3.9 0 3.6 7.1 9.5 15.1 19.5 21.9 26.4 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 D-62481-87I MITSUBISHI ELECTRIC ( 75 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *TRACK GAIN ( 16steps , 1.4dBstep) Recommended Register Settings D15 R0 R1 R2 R3 0 0 1 1 D14 D13 0 1 0 1 0 X X 0 D12 X X X 1 D11 0 X X 0 D10 0 X X X D9 0 X X X TE1 -IN D8 X X X X D7 X X X D 27k D6 X X X C D5 X X X B D4 X X X A D3 X 0 X X D2 X 0 X X D1 X 0 X X D0 X 0 X X JP1/SG 24 JP1 Input Circiut UA TG SIG 2 270k 6k 3 TE1 112k 18k TE1 TE2 AMP 17.5k 6.65k 3.31k 1.83k 1.06k 32k 14.8k F-E a b 50k 47k 45k 87.5k 108k 95.0k c h i k l m d e f g n TG RET 220k 47p ADJ GAIN 68k 3k ADJ ADJ ADJ ADJ ADJ FO1 FO2 TO1 TO2 FBAL XOR ADJ TBAL FG RET 220k 470 Discharge 100k CMP OFFSET Dout Logic 68k 330k 2.2k VREF=1/2Vcc 18 DETFIL 20 CLPF D-62481-87I MITSUBISHI ELECTRIC ( 76 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) -2.Track Gain R3;D7 R3;D6 R3;D5 R3;D4 a 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 b 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 c 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 d 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 e 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 f 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 g 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 gain(dB) - 11.2 - 9.8 - 8.4 - 7.0 - 5.6 - 4.2 - 2.8 -1.4 0 1.4 2.8 4.2 5.6 7.0 8.4 9.8 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 R3;D7 R3;D6 R3;D5 R3;D4 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 h 1 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 i 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 0 k 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 l 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 m 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 n 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 D-62481-87I MITSUBISHI ELECTRIC ( 77 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *FOCUS GAIN ( 16steps , 1.4dBstep ) Recommended Register Setings D15 R0 R1 R2 R3 0 0 1 1 D14 D13 0 1 0 1 0 X X 1 D12 X X X 0 D11 0 X X 0 D10 D9 0 X X X 0 X X X D8 X X X X D7 X X X X D6 X X X X D5 X X X X FE1 D4 X X X X D3 X 0 X D D2 X 0 X C D1 X 0 X B D0 X 0 X A FE1 -IN 37 FG SIG 36 190k 6k FE1 14.8k 18k 112k A-B FE2 AMP 17.5k 6.65k 3.31k 1.83k 1.06k 32k 24 JP1/SG JP1 Input Circiut UA a b 50k 47k 45k 87.5k 108k 95.0k c d e f g h JP1H i k l m n ADJ ADJ ADJ ADJ FG RET FO1 FO2 TO1 TO2 220k 47p ADJ GAIN 68k 100k 3k Dout Logic 68k XOR ADJ TBAL TG RET 220k 470 Discharge 330k 2.2k CMP OFFSET 18 DETFIL 20 CLPF VREF=1/2Vcc D-62481-87I MITSUBISHI ELECTRIC ( 78 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) -2.Focus Gain R3;D3 R3;D2 ( R3; ) R3;D1 R3;D0 c 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 g 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 a 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 b 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 d 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 e 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 f 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 gain(dB) -11.2 - 9.8 - 8.4 - 7.0 - 5.6 - 4.2 - 2.8 -1.4 0 1.4 2.8 4.2 5.6 7.0 8.4 9.8 R3;D3 R3;D2 R3;D1 R3;D0 D 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 h 1 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 i 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 0 k 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 l 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 m 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 n 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 D-62481-87I MITSUBISHI ELECTRIC ( 79 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *TRACK OFFSET (1) Track Offset method I ( 8steps ) Recommended Register Settings R0 R1 R2 R3 R3 D15 0 0 1 1 D14 D13 0 X 1 X 0 1 C 0 D12 X X B 0 D11 0 X A 0 D10 0 X X X D9 0 X X X D8 0 X X X D7 X X X X D6 0 X X X D5 0 X X X D4 0 X X X D3 0 0 X X D2 X 0 X X D1 X 1 X X D0 X 0 X X OST 1 Track Offset voltage BW WIDE TE1 TE1 -IN TE2 +IN pin 11 TG1 2 3 Track gain2 4 5 TG1 TS HOLD 6 TE2 -IN TE2 OUT 7 4.5p 1.5p E 55 E TE2 22k TS OFF 400k 30k Track Balance2 Track gain1 E BW WIDE 18k 2k 220k TS ON F-E TE1 30k Track Balance1 Track gain3 (offset) 4.5p 1.5p 1k 400k F F 56 F 270k Track Cross Detector circiut 100k TG RET TG SIG JF 47p 100k TC DETLPF SW Track offset Method I ADJ TO2 ADJ FO1 ADJ FO2 ADJ TBAL ADJ GAIN 3k 68k VREF=1/2Vcc TG2 JR TG3 TS ADJ TO1 11 TG2 12 TG3 13 470 TS -IN 14 TS OUT 100k CMP OFFSET Dout Logic TE2 OUT pin 7 Track Actuator SS Amp. pin 15 CLPF 68k 330k 2.2k 20 D-62481-87I MITSUBISHI ELECTRIC ( 80 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) Track Offset method II ( 8steps ) Recommended Register Settings D15 R0 R1 R2 R3 R3 0 0 1 1 D14 0 1 0 1 D13 D12 X X C 0 X X B 0 D11 0 X A 0 D10 0 X X X D9 0 X X X D8 0 X X X D7 X X X X D6 1 X X X D5 0 X X X D4 0 X X X D3 0 0 X X D2 X 0 X X D1 X 0 X X D0 X 1 X X OST 1 Track Offset voltage BW WIDE 2 TE1 -IN TE1 TE2 +IN pin 11 TG1 3 Track gain2 4 5 TG1 TS HOLD 6 TE2 -IN TE2 OUT 7 4.5p 1.5p E 55 E TE2 400k 30k Track Balance2 Track gain1 BW WIDE E 18k 2k 220k 1k 22k TS ON TS OFF F-E 30k Track Balance1 4.5p 1.5p TE1 Track gain3 (offset) 400k F F 56 F 270k TG RET TG SIG JF Track Cross Detector circiut 100k ADJ FO1 ADJ FO2 Track offset 47p 100k TC DETLPF SW Method I ADJ TO2 3k 68k ADJ TBAL ADJ GAIN VREF=1/2Vcc TG2 JR TG3 TS ADJ TO1 470 11 TG2 12 TG3 13 TS -IN 14 100k CMP OFFSET TS OUT Dout Logic TE2 OUT pin 7 Track Actuator SS Amp. pin 15 CLPF 68k 330k 2.2k 20 D-62481-87I MITSUBISHI ELECTRIC ( 81 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT -2. Track Offset voltage source ( R2; ) R2;D13 R2;D12 R2;D11 a 1 0 0 0 0 0 0 0 b 0 1 0 0 0 0 0 0 c 0 0 1 0 0 0 0 0 d 0 0 0 1 0 0 0 0 e 0 0 0 0 1 0 0 0 f 0 0 0 0 0 1 0 0 g 0 0 0 0 0 0 1 0 h 0 0 0 0 0 0 0 1 Voltage(V) 1.39 1.67 1.94 2.22 2.50 2.78 3.06 3.33 C 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 A 0 1 0 1 0 1 0 1 10k h g f e 1 OST d c b a 2k 2k 2k 2k 10k 2k 2k 2k 2k Offset voltage D-62481-87I MITSUBISHI ELECTRIC ( 82 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT *FOCUS OFFSET (1) Focus Offset method I ( 8steps ) Recommended Register Settings R0 R1 R2 R3 R3 D15 0 0 1 1 D14 0 1 0 1 D13 D12 X X X 0 X X X 0 D11 0 X X 0 D10 0 X C X D9 0 X B X D8 0 X A X D7 X 0 X X D6 X 1 X X D5 X 1 X X D4 X X X X D3 X 1 X X D2 X 0 X X D1 X 0 X X D0 X 0 X X OSF Focus Offset voltage 0.1P 60k B 53 B 38 31 pin FE1 -IN FE1 FE2 +IN FG1 FE2 OUT FE2 -IN 37 47k 30k 36p BW WIDE 36 Focus gain2 35 34 33 FG1 32 B 12p Focus Balance2 Focus gain1 FS HOLD FE2 22k 0.1P A 54 A A-B FE1 18k 2k 220k FS ON 60k 47k A 12p 30k 36p BW WIDE Focus Balance1 Focus gain3 (offset) 1k FS OFF 230k FG SIG FG RET FZC Shock Circiut 100k ADJ TO1 ADJ TO2 ADJ TBAL ADJ GAIN VREF=1/2Vcc FZC OFF 47p ADJ FO2 100k 68k 3k Charge 100k 68k Focus offset Method I FS FG2 ADJ FO1 Dout Logic 31 FG2 30 FS -IN 29 470 330k 2.2k CMP OFFSET 32 pin FE2 OUT Focus Actuator CLPF 20 D-62481-87I MITSUBISHI ELECTRIC ( 83 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) Focus Offset method II ( 8steps ) Recommended Register Settings R0 R1 R2 R3 R3 D15 0 0 1 1 D14 D13 0 1 0 1 X X X 0 D12 X X X 0 D11 0 X X 0 D10 0 X C X D9 0 X B X D8 0 X A X D7 X 1 X X D6 X 0 X X D5 X 0 X X D4 X X X X D3 X 0 X X D2 X 1 X X D1 X 0 X X D0 X 0 X X OSF 38 Focus Offset voltage 0.1P 60k B 53 B FE1 -IN FE1 FE2 +IN FG1 FE2 OUT FE2 -IN 31 pin 37 47k 30k 36p BW WIDE 36 Focus gain2 35 34 33 FG1 32 B 12p Focus Balance2 Focus gain1 FS HOLD FE2 22k 0.1P A 54 A A-B FE1 18k 2k 220k FS ON 60k 47k A 12p 30k 36p BW WIDE 1k FS OFF Focus Balance1 Focus gain3 (offset) 230k FG SIG FG RET FZC Shock Circiut 100k ADJ TO1 ADJ TO2 VREF=1/2Vcc FZC OFF 47p 100k ADJ FO2 68k 3k 100k ADJ FO1 ADJ TBAL ADJ GAIN Focus offset Method II FS FG2 Dout Logic 68k 31 FG2 30 FS -IN 29 470 330k 2.2k CMP OFFSET 32 pin FE2 OUT Focus Actuator CLPF 20 D-62481-87I MITSUBISHI ELECTRIC ( 84 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2) -2. Focus Offset voltage source ( R2; ) R2;D10 C 0 0 0 0 1 1 1 1 R2;D9 B 0 0 1 1 0 0 1 1 R2;D8 A 0 1 0 1 0 1 0 1 a 1 0 0 0 0 0 0 0 b 0 1 0 0 0 0 0 0 c 0 0 1 0 0 0 0 0 d 0 0 0 1 0 0 0 0 e 0 0 0 0 1 0 0 0 f 0 0 0 0 0 1 0 0 g 0 0 0 0 0 0 1 0 h 0 0 0 0 0 0 0 1 Voltage(V) 1.39 1.67 1.94 2.22 2.50 2.78 3.06 3.33 10k h g f e 38 d OSF c b a 2k 2k 2k 10k 2k 2k 2k 2k 2k Offset voltage D-62481-87I MITSUBISHI ELECTRIC ( 85 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT FLOW CHART OF AUTOMATIC ADJUSTMENT (1)Basic Routine START Initilization Offset Ajustment I Move pick-up to inside Kick disc motor Start Focus Search DOUT1,2=0 YES NO Balance Adjustment Offset Ajustment II Focus Gain Adjustment Start Track Servo CRC=1 YES NO Tracking Gain Adjustment END D-62481-87I MITSUBISHI ELECTRIC ( 86 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT (2)Automatic Adjustment Serial Data Command:DCBA(the adjustment item) (example) START V CLPF Pin 27 t Initilization for adjustment DATA OUT Pin 20 , 21 0 DOUT1,2=0 YES NO t DCBA>0 (CBA>0) NO DCBA<15 ( CBA<7) NO YES DCBA<-DCBA-1 ( CBA <- CBA -1) Send New Command YES DCBA<-DCBA+1 ( CBA <-CBA +1) Send New Command DOUT1,2=1 NO YES DCBA<-DCBA+1 ( CBA<-CBA+1 ) Send New Command DOUT1,2=0 NO YES DCBA<-DCBA-1 ( CBA<-CBA-1 ) Send New Command END (note)It's possible to control the tracking balance by (DCBA(CBA)) D-62481-87I MITSUBISHI ELECTRIC ( 87 / 88 ) MITSUBISHI SOUND PROCESSOR LSI M62481FP PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT APPLICATION NOTE Phase shift circuit for auto adjustment The adjustment frequency for the auto adjustment is the frequency where the phase shift for the comparator is 90. When the phase characteristic is smooth around that adjustment frequency (figure 1). The standard circuit for the feed-in of the adjustment frequency can be used (figure 3). 0 -90 -180 -270 -360 100Hz 1KHz Adjustment frequency 10KHz Figure 1: Phase Diagram of Pick Up + Servo Some pick up units may have a phase turbulence around the ideal adjustment frequency. So the phase diagram may look like that in figure 2. Those phase turbulence can cause miss adjustment. It is necessary to overcome this effect by the adjustment software. E.g.:The adjustment frequency is shifted to a lower or a higher frequncy , which results in a systematic misadjustment.This systematic misadjustment must then be taken into acount by the adjustment software. Phase turbulences 0 -90 -180 -270 -360 100Hz 1KHz Example Adjustment frequency is shifted to a lower or higher frequency 10KHz Figure 2: Phase Diagram of Pick Up + Servo with phase turbulence Below figure shows the feed-in circuit in the track servo. TE Amp. - input 2 3 TE Amp. Gain control 270k TG SIG Note. Please correspond to phase turbulences with software. JP1 Input Circiut TE1 Amp TE2 Amp. TG VREF=1/2Vcc M62481FP Figure 3: Circuit Examples D-62481-87I MITSUBISHI ELECTRIC ( 88 / 88 ) |
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