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electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 1 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 ? times speed ? beam pick-up servo system ?daptable to hologram pick-up system with additional input. ?uilt-in automatic laser power control circuit ?uilt-in mirror detector ?uilt-in adjustment circuit for automatic tuning ?uilt-in serial data command interface to reduce micro-controller overload ?uilt-in self-reset circuit system block diagram pick-up pd ld trk actuator sled motor fcs actuator spindle motor M62481FP hf pre amp fe pre amp te pre amp alpc adj adj trk servo search sled servo mcu i/f dsp mcu driver fcs servo application recommended operation conditions cd player,cd-rom player supply voltage range 4.5 -> 5.5v rated supply voltage 5.0v m5674x m6582x hf signal 56p6s 0.65mm pitch 56pin qfp (10.0mmx10.0mmx2.8mm)
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i pin configuration 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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 (top view) 2 apc in hfc apc out osf fe2 + in fe1 fs - in fs out fe1 - in fg1 cfsr fe2 out fg2 fe2 - in te2 + in shock in tg1 ts out tg3 ts - in te1 riref vcc ost te2 - in tg2 te2 out te1 - in
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i block diagram unit resistance : w 3 apc in hfc apc out osf fe2 + in fe1 fs - in fs out fe1 - in fg1 cfsr fe2 out fg2 fe2 - in te2 + in shock in tg1 ts out tg3 ts - in te1 riref vcc ost te2 - in tg2 te2 out te1 - in 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 mr/hfok 47k 47k tg3 fs on 47k 56k fe1 reset v ref te1 te2 focus offset focus gain1 track balance1 track balance2 jf jr ts fs tg1 ts off f-e fbal apc a-b hf fg2 sf sr ss track gain1 400k 30k 30k fe2 fs off fg1 fs hold tg2 ts hold ts on tc shock ss buf ss off 400k 60k 60k 30k 10k 10k 5.0k 30k 30k focus balance1 focus balance2 2k 220k 22k 22k 2k 220k fzc off 10k focus gain2 track gain2 18k 18k 29 1k 1k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i pin description pin no. symbol equivalent circuit function 8 2 ost voltage output for track offset adjustment 3 4 6 te2 out te2 amp output 7 shock in shock detector input 1 5 tg1 tg1 sw te2 amp positive input 4 te1 -in te1 te2 +in te2 -in 8 7 6 5 4 1 te1 amp negative input te1 amp output 18k 220k te2 amp positive input 2 6k 3 22k 10k 2.2k 1k 1k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 9 10 11 12 13 14 15 16 ts - in ts amp negative input tg2 tg2 sw ts out ts amp output pin no. symbol equivalent circuit function vcc power supply riref current reference 5 ss amp positive input ss + in ss - in ss amp negative input tg3 11 12 13 14 15 16 9 10 tg3 sw 10k 1k 1k 1k 1k 10k 10k 10k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 17 18 19 20 21 22 23 24 gnd ground 21 pin no. symbol equivalent circuit function mla/dis mcu latch signal input (discharge control for lpf capacitor of adjustment) 23 jp1/sg 24 single track jump control (reference signal input for gain adjustment) ss out ss amp output 17 dout1 22 servo status data output1 10k 4.7k 6 20k 4.7k vref vcc/2 amp output 19 detfil filter for phase detector (gain adjustment) 18 220k 47p 20k clpf 20 lpf capacitor for adjutment 470 3.0k 68k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 25 26 27 28 29 30 31 32 pin no. symbol equivalent circuit function mck 25 mcu clock signal input msd 26 mcu serial data input fs out fs amp output 29 30 fs - in fs amp negative input fg2 fg2 sw 31 hfd 28 hf detect output fe2 out 32 fe2 amp output 10k 7 4.7k 20k 4.7k 20k 1k 1k 10k dout2 27 servo status data output2 10k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 33 34 35 36 37 38 39 40 pin no. symbol equivalent circuit function fe1 - in fe1 amp negative input fe1 fe1 amp output voltage output for focus offset adjustment osf 38 apc out apc(automatic laser power control)output cfsr voltage for focus search 39 40 8 100 fe2 + in fg1 fe2 - in fg1 sw 34 35 220k 33 18k fe2 amp positive input fe2 amp negative input 1k 1k 10k 22k 6k 37 36
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 41 42 43 44 45 46 47 48 hfc hf capacitor for hf detector mrc 43 hold capacitor for mirror detector hf out 48 hf amp output pin no. symbol equivalent circuit function apc in apc(automatic laser power control)input 41 fbo fbi 45 46 focus balance amp output focus balance amp input 9 comp in mr in 44 47 51k 51k comp amp input input of mirror detector 5.1k 42 100k 4.7k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i 49 50 51 52 53 54 55 56 gnd ground 50 a in focus servo input a 54 b in focus servo input b 53 c in hf input c for auxiliary 52 e in track servo input e 55 f in track servo input f 56 hf amp negative input 49 hf - in pin no. symbol equivalent circuit function 10 ab 51 a,b output 10k 10k 60k 60k 30k 400k 400k 5k
electric mitsubishi mitsubishi sound processor lsi M62481FP ( / 88 ) pickup servo system with automatic adjustment d-62481-87i abusolute maximaum rating recommended operating condition symbol parameter conditions ratings unit vcc v i pd ko topr tstg maximum supply voltage input voltage power dissipation thermal derating operating temparature storage temparature ta = 25deg. 7 -0.3 -> vcc+0.3 900 9.0 -20 -> +85 -40 -> +125 v v mw mw/deg. deg. deg. thermal derating (maximum rating) 1000 800 600 400 200 0 0 25 50 75 100 125 360 900 ambient temperature ta (deg.) 85 ta=25deg.,unless otherwise noted symbol parameter conditions limits unit vcc v ih fck supply voltage high-level input voltage clock frequency 4.5 v v min typ max 5.0 5.5 vcc -> 0.7 vcc vcc->0.3 500 0 v khz low-level input voltage v il 11 pin 23 ,pin 24 , pin 25 ,pin 26
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(1/6) symbol parameter test conditions limit unit (ta=25deg.,vcc=5v,f=1khz,dcba=1000,unless otherwise noted) block min typ max icc v ref g vhfab g vhfc f hf 1 v hhf v lhf v oshf circuit current reference voltage gain for input a/b gain for input c hf cut off frequency1 high output voltage low output voltage offset voltage hf mr ma v db db mhz v v mv quiescent 70 2.3 2.5 2.7 12.0 16.0 3.5 4.0 1.0 1.5 f=500khz f=500khz refer to v ref hfd/ v v v hhfd vlhfd input vin= 4.0v input vin= 1.0v 0 ratio(nomal) "normal"mode: r0;d5=0 "brake"mode : r0;d5=1 r mn-on 9.1 11.1 13.1 5.1 7.1 3.1 50 -50 f hf 2 hf cut off frequency2 (normal) 3db down refer to 500khz (invert) 3db down refer to 500khz mhz 12.0 16.0 dout1,2 high output current low output current i ohdout i oldout iv + no 1 2 3-1 5 6 7 8 9 10-1 iohhfd i olhfd v hdout v ldout high output voltage low output voltage 17 15 16 14 19 20 21 ua ua 4.0 3.5 1.5 1.0 -100 1000 500 -70 v oh =4.0v v ol =1.0v measurement circuit (1) (2) (1) (3) (4)-1 (5) (6)-1 (7) (7) (8) (8) 12 3-2 4-1 4-2 ma high output current low output current i ohhf i olhf ma v oh =4.0v v ol =1.0v -2 2 1 -1 (4)-1 (4)-2 (4)-2 cut off frequency (low) f mrl khz v 30 50 - 0.19 "normal"mode: r0;d5=0 , r1;d13=1 "normal"mode: r0;d5=0 , r1;d13=0 60 100 12-1 v thfok threshold refer to v ref hfok 13 - 0.26 - 0.12 (7) 12-2 f mrh cut off frequency (high) 18 r mn-off 10-2 10-3 11-1 11-2 11-3 r mn-hys r mj-on r mj-off r mj-hys ratio(nomal) hysteresis(normal) ratio(jump) ratio(jump) hysteresis(jump) (6)-1 (6)-1 (6)-1 (6)-1 (6)-1 (6)-2 (6)-2 "brake"mode : r0;d5=1 "brake"mode : r0;d5=1 "normal"mode: r0;d5=0 "normal"mode: r0;d5=0 55 30 0.37 0.47 0.57 0.31 0.41 0.51 0.03 0.06 0.12 0.42 0.52 0.62 0.48 0.58 0.68 0.04 0.08 0.16
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i note(1/6) (1)g vhfab , f hf1; (2)g vhfc; (3)f hf2; input signal via (vib) input signal vic input signal via (vib) 0.5vp-p t vref via(vib) 49 48 + 54 53 52 51 vo 18k 60k 60k vref+0.25v 60k 60k 30k 10k 10k 5k via vib vref+0.25v 0.5vp-p t vref vic 0.5vp-p t vref via(vib) hf 49 48 + 54 53 52 51 vo 18k 30k 60k 60k 30k 10k 10k 5k vic vref+0.25v hf 49 48 + 54 53 52 51 ~ ~ 10k 60k 60k 60k 60k 30k 10k 10k 5k vo vref-0.25v vref-0.25v via vib hf ?v+hf block v ref= 1/2vcc 13 ~ ~ 10k ~
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (4)-1v hhf, v lhf; (5)v oshf; 49 48 + 54 53 52 51 18k vo 60k 60k + 19 47k 47k 60k 60k 30k 10k 10k 5k input via(vib) 49 48 + 54 53 52 51 vo 18k 60k 60k 60k 60k 30k 10k 10k 5k via vib vref v hhf :via(vib)=4.0v v lhf :via(vib)=1.0v v ref =1/2vcc 4.7k hf hf 14 (4)-2v hhf, v lhf; input via(vib) 49 48 + 54 53 52 51 vo 18k 60k 60k 60k 60k 30k 10k 10k 5k via vib i ohhf :v o =4.0v i olhf :v o =1.0v hf
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (6)-1)r mn, r mj, f mr (high,low); -2)fmr (high,low); t vref u a u b v 47 49 48 + 18k vo mr/hfok 47 43 42 18k ~ mr hfok 28 hfd mode vi 0.001u 0.001u ?r block r mn : mirror detector sensitivity : in normal mode (r0;d5(brake)=0) test : ub is decrease starting at u b =u a . when mr pulses are detected at the hfd pin,r mn is calculated as follow: r mn = u a u b r mj : in brake mode fmr(low) : cut off frequency of mirror detector. (r1;d13(bw wide)=1) test condition : u a u b =0.3 -> ?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 u b =0.15v (r0;d5(brake)=1) test : same explanation as above fmr(high) : cut off frequency of mirror detector.(r1;d13(bw wide)=0) (r0;d5(brake)=0) test : same explanation as above v ref =1/2vcc 15 /bw wide=1; /bw wide=0; fc=500khz am fmod=1khz fc=8.0mhz am fmod=1khz a= 0.5v 0.068u
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (7)v thhfok, v hhfd, v lhfd; 49 48 + 18k vo mr/hfok 47 43 42 18k mr hfok 28 hfd mode 0.068u 0.001u vin v thhfok: when input voltage vin increase starting from vref, vo change form "l" to "h" and pin 48 measure voltage( refer to vref). v hhfd v lhfd v ref =1/2vcc (r l =nothing) (8)i ohhfd, i olhfd; 49 48 + 18k vo mr/hfok 47 43 42 18k mr hfok 28 hfd mode 0.001u vin v ref =1/2vcc v ref =1/2vcc i oh (i ol ) v o =4.0v : i ohhfd v o =1.0v : i olhfd 16 0.068u
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(2/6) symbol parameter test conditions limit unit (ta=25deg.,vcc=5v,f=1khz,dcba=1000,unless otherwise noted) block min typ max g vfe gain high output voltage low output voltage fe v db v hfe2 v lfe2 v 3.5 4.0 1.0 1.5 input vin= 4.0v input vin= 1.0v fg a fg1?on a fg1?off "fg1 sw=fg2 sw=on", rl=2kohm "fg1 sw=fg2 sw=off" 15 20 0 2 db db attenuation fg1,2 on attenuation fg1,2 off 14.0 12.0 16.0 v iv + gain value dcba=1000(0db) 22 23 24 measurement circuit 41 42 (10) (11) (11) b alfe offset voltage v fsr + v osfe2 v fsr - v fzc1 focus balance focus search + voltage focus search - voltage focus zero cross1 + voltage mv % v v v 0 -2 0 +2 -0.07 -0.12 -0.17 refer to v ref, refer to v ref refer to v ref "shock or fzc"mode refer to v ref v fzc1 focus zero cross1 - voltage "shock or fzc"mode refer to v ref v + - 0.07 0.12 0.17 ( max ) ( min ) -1.59 1.67 fs v mv v lfs v osfs low output voltage offset voltage 1.0 1.5 0 refer to v ref input vin= 4.5v -25 25 40 -40 1.45 -1.40 v fzc2 focus zero cross2 + voltage v -0.5 -0.7 -0.9 refer to v ref v fzc2 focus zero cross2 - voltage refer to v ref + 0.5 0.7 0.9 fzc focus search offset voltage v osfe1 mv 0 refer to v ref, 15 -15 focus gain : 0db focus balance : 0% focus gain : 0db focus balance : 0% (shock detector) (shock detector) 25 26 27 28 v osfe1adj offset voltage g vfs gain db 0 -2.0 2.0 v hfs v high output voltage 3.5 4.0 input vin= 1.0v 29 30 31 34 35 36 37 38 refer to v ref, focus gain : -11 -> 9.8db focus balance : 0% (13)-1 mv 0 15 -15 (10) - ma i ohfs -6.0 input v0= 4.0v 32 ma input v0= 1.0v 33 i ohfe2 i olfe2 39 40 43 44 high output current low output current high output current low output current i olfs input vo= 4.0v input vo= 1.0v (12) (12) (13)-1 (13)-2 ma ma (14) (15) (15) (16) (16) (17) (18) (18) (19)-1 (20) (20) 17 -2 -1 1 2 -4.0 4.0 6.0 (19)-1 (19)-2 (19)-2 r2;dcba=1000(0%)
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (10)g vfe , b alfe; 54 53 37 36 35 33 32 ~ ~ 60k 60k 1/2vcc 1/2vcc ?v + fe block 60k 60k 30k 30k 18k 1k 220k 22k a-b focus balance1 focus gain1 focus balance2 focus gain2 vo 240k 27k b alfe =g vfe(a?) / g vfeb fe1 fs hold fs off vi=50mvrms 0 vref via(vib) t g vfe :input a only.output voltage is at pin 32 input via(vib) gvfe(a?);equal phase signals input to pin 54 and 53 . via vib 47k fs on note(2/6) fe2 (11)v hfe2, v lfe2 ; 54 53 37 36 35 33 32 60k 60k 30k 30k 18k 1k 220k 22k a-b focus balance1 focus gain1 focus balance2 focus gain2 vo 240k 60k vib 27k fe1 fs hold fs on fs off input via(vib) v hfe2 :vi=4.0v v lfe2 :vi=1.0v 47k 4.7k fe2 vref=1/2vcc 18 2k 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (12)i ohfe2, i olfe2 ; 54 53 37 36 35 33 32 60k 60k 30k 30k 18k 2k 220k 22k a-b focus balance1 focus gain1 focus balance2 focus gain2 240k 60k vib 27k fe1 fs hold fs on fs off input via(vib) i ohfe2 :vo=4.0v i olfe2 :vo=1.0v 47k fe2 (13)-1v osfe1, v osfe2 54 53 37 36 35 33 32 60k 60k 30k 30k 18k 1k 220k 22k a-b focus balance2 focus gain1 focus balance1 focus gain2 v osfe1 240k 19 + 47k 47k 60k 60k 27k fe1 fs hold fs off v osfe2 fs on 47k v ref vo i oh (i ol ) vref=1/2vcc 19 fe2 2k 1k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (13)-2 v osfe1adj 54 53 37 36 35 33 32 60k 60k 30k 30k 18k 1k 220k 22k a-b focus balance2 focus gain1 focus balance1 focus gain2 v osfe1adj 240k 19 + 47k 47k 60k 60k 27k fe1 fs hold fs off v osfe2 fs on 47k 38 focus offset 1.2m 1 . focus gain ( r3;d0->3=1 ( 9.8db ) measurement circuit (13)-1 vos fe1 : within +/- 50mv 2 . focus gain ( r3;d0->3=1 ( 9.8db ) measurement circuit (13)-2 input pin54 add va( offet voltage ) vos fe1 adj is within +/- 15mv by adjusting va. 3 . focus gain ( -11->9.8db ) measurement circuit (13)-2 vos fe1 adj( pin35) : mesurement v ref fe2 vref=1/2vcc 20 2k 100k 220k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 30 29 19 27k + 47k 47k vo 27k 1k fs (17)v osfs ; v ref (15)v hfs ,v lfs ; input vi v hfs :vi=1.0v v lfs :vi=4.0v 30 29 19 27k + 47k 47k vo 27k 1.0k fs v ref vi (14)g vfs :input pin 30 ?s block g vfs =vo / vi vi=10mvrms 0 vref vi t 30 29 19 27k + 47k 47k ~ vo 27k 1.0k fs v ref vi ; (16)i ohfs ,v ilfs ; input vi i ohfs :vo=4.0v i olfs :vo=1.0v 30 29 19 27k + 47k 47k 27k fs v ref vi vo i oh (i ol ) vref=1/2vcc (18)v fsr + ,v fsr - ; v fsr + (r1:d8=0,d9->d12=1) v fsr - (r1:d8=1,d9->d12=1) 39 focus search vo cfsr 21
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (19).fzc block (19)-1.v fzc1 + ,v fzc1 - (k200); vref=1/2vcc buffer 60k 47k 30k 12p 36p bw wide 30k buffer 60k 47k 30k 12p 36p bw wide focus balance2 focus balance1 focus gain3 (offset) focus gain1 focus gain2 18k 1k fe1 a-b 53 54 52 37 36 49 48 47 22 hfok detector fzc/shock logic k200 g800 dout logic (vth=+/-0.12v) fzc off fzc off (vth=+/-0.7v) hfok 8 35 dout1 42 hf fe1-in a c 30k v ia 60k on/off on/off hf v ia v pin8 measure v pin35 hf-in hfout fe1 mrin hfc dout1 shock in fe2+in b 22 0.01u 5k 27k 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; v fzc1 + =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; v fzc1 - =vpin8 - vref 100k 47p 220k fs on fs hold 100k 0.001u 18k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (19)-2.v fzc2 + ,v fzc2 - (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; v fzc2 + =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; v fzc2 - =vpin35 - vref (20)a fg1,2on ,a fg1,2off ; vi=0.5mvrms 0 vref vi t afg on (r0;d8=0,r3;d8=1,r3;d9=0) afg off(r0;d8=0,r3;d8=0,r3;d9=0) 34 31 19 + 47k 47k ~ vo 2k v ref vi ~ 2k vo vi vref=1/2vcc fg1 fg2 23
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(3/6) symbol parameter test conditions limit unit (ta=25deg,vcc=5v,f=1khz,dcba=1000,unless otherwise noted) block min typ max g vte b alte g vts gain high output voltage low output voltage offset voltage v hts ts v tc + v db v v mv v hte2 v lte2 v oste2 v lts v osts v tc - track balance gain high output voltage low output voltage offset voltage track cross + voltage track cross - voltage v mv % db mv mv v jf v jr jump voltage(forward) jump voltage(reverse) tc v v "jf"mode, "jr"mode, 3.5 4.0 1.0 1.5 -3.0 0 +3.0 3.5 4.0 1.0 1.5 +0.12 +0.15 +0.18 -0.18 -0.15 -0.12 +50.0 +62.5 +75.0 -75.0 -62.5 -50.0 refer to v ref refer to v ref refer to v ref refer to v ref refer to v ref refer to v ref 0 0 input vin= 4.5v input vin= 1.0v input vin= 4.0v input vin= 1.0v 14.0 12.0 16.0 -40 +40 -2.0 0 2.0 -25 25 te iv + offset voltage v oste1 mv refer to v ref 0 -15 +15 gain value : dcba=1000(0db) track gain : 0db track balance : 0% track gain : 0db track balance : 0% i ohte2 i olte2 i ohts i olts 45 measurement circuit (21) high output current low output current input vo= 4.0v input vo= 1.0v (23) (23) ma ma high output current low output current input vo= 4.0v input vo= 1.0v 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 (22) (22) (24)-1 (24)-1 (24)-2 mv 0 -15 +15 refer to v ref track gain : -11 -> 9.8db track balance : 0% (21) (25) (26) (26) (27) (27) (28) (28) (28) (29) (29) offset voltage v oste1adj 24 -2.0 -1.0 1.0 2.0 -6.0 -4.0 4.0 6.0 ma ma
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i note(3/6) (21)g vte,balte; vi=50mvrms 0 vref vi e (vi f ) t iv+te block bal te= g vte(e?) / g vte (%) ( g vte(e?) ; equal phase signals input to pin 56 and 55 ) 27k 19 + 47k 47k 56 55 2 3 4 6 7 400k 400k 1/2vcc 1/2vcc 400k 400k 30k 30k 18k 2k 220k 22k track balance1 track gain1 track balance2 track gain2 vo 240k te1 ts hold ts on ts off v if v ie f-e 47k 4.7k v ref te2 (21)v hte2, v lte2; input v in v hte2 : v in =4.0v v lte2 : v in =1.0v 19 + 47k 47k 56 55 2 3 4 6 7 400k 400k 30k 30k 18k 1k 220k 22k f-e track balance2 track gain1 track balance1 track gain2 vo 240k 27k te1 ts hold ts on ts off 400k v in te2 47k v ref 4.7k vref=1/2vcc 25 2k 1k ~ ~
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (23)i ohte2, i olte2; 19 + 47k 47k 56 55 2 3 4 6 7 400k 400k 30k 30k 18k 220k 22k track balance2 track gain1 track balance1 track gain2 v oste2 240k 27k te1 ts hold ts on ts off 400k 400k (24)-1v oste2, v oste1; input v in i ohte2 : v o =4.0v i olte2 : v o =1.0v te2 47k f-e v ref 4.7k 19 + 47k 47k 56 55 2 3 4 6 7 400k 400k 30k 30k 18k 2k 220k 22k f-e track balance2 track gain1 track balance1 track gain2 240k 27k te1 ts hold ts on ts off 400k v in te2 47k v ref v oste1 vo i oh (i ol ) vref=1/2vcc 26 1k 2k 1k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (24)-2 v oste1adj 1.2m 1 . track gain ( r3;d4->7=1 ( 9.8db ) measurement circuit (24)-1 vos te1 : within +/- 50mv 2 . track gain ( r3;d4->7=1 ( 9.8db ) measurement circuit (24 )-2 input pin55 add va( offet voltage ) vos te1 adj is within +/- 15mv by adjusting va. 3 . track gain ( -11->9.8db ) measurement circuit (24)-2 vos te1 adj( pin4 ) : mesurement track offset 19 + 47k 47k 56 55 2 3 4 6 7 400k 400k 30k 30k 18k 2k 220k 22k track balance2 track gain1 track balance1 track gain2 v oste2 240k 27k te1 ts hold ts on ts off 400k 400k te2 47k f-e v ref vref=1/2vcc 27 1k 220k 100k 1
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (26)v hts, v lts; vi=0.5mvrms t 0 vref vi g vts :input pin 13 + 47k 47k + 19 14 13 6.8k 6.8k 1k vo (25)g vts; ts block v i input v in v hts : v in =1.0v v lts : v in =4.0v v ref ts + 47k 47k + 19 14 13 6.8k 6.8k 1k vo v in ts v ref + 47k 47k + 19 14 13 6.8k 6.8k v in ts v ref (27)i ohts, i olts; input v in i ohts : v o =4.0v i olts : v o =1.0v vo i oh (i ol ) jf jr jf jr jf jr vref=1/2vcc 28 ~
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i test : when dout1 is detected "h" and "l" ,the voltage of pin 4 measure. (mv) vo 56 55 400k 400k 30k 30k f-e track balance1 track cross detector track balance2 v in (29)v tc + , v tc - ; input v in output d out 1 400k vref v m +200 -200 f=1khz v in =0.16vpp(v m =0.4vpp) ~ 22 dout1( tc hs) 3 2 18k track 27k 4 gain2 1k 220k v m te1 + 47k 47k + 14 13 6.8k 6.8k 1k vo (28)v osts, v jf, v jr; v jf (jp1/sg="x" r0 ; d13=d3=0, d4=1) v jr (jp1/sg="x" r0 ; d13=d3=1, d4=0) v ref ts 19 dout logic track gain1 r0; d7=0,d11=d10=1 vref=1/2vcc jf jr 29 100k 47p 100k tc det lpf sw 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(4/6) symbol parameter test conditions limit unit (ta=25deg.,vcc=5v,f=1khz,dcba=1000,unless otherwise noted) block min typ max tg a tg1,2on attenuation tg1,2 on a tg1,2off tg1 sw=tg 2 sw="on" rl=2kohm tg1 sw=tg2 sw="off" 15 20 0 2 15 20 0 2 db db db db attenuation tg1,2 off 64 measurement circuit (30) g vss att ss v hss ss v rst v v mv v lss v ossson gain attenuation at ss off high output voltage low output voltage offset voltage ss on reset voltage db db v v sf v sr slide voltage(forward) slide voltage(reverse) v v reset "sf"mode, "sr"mode, 10 12 14 40 3.5 4.0 1.0 1.5 +0.76 +0.95 +1.14 -1.14 -0.95 -0.76 2.1 2.3 2.5 refer to v ref refer to v ref refer to v ref 0 input vin= 4.0v input vin= 1.0v -25 25 apc gain apc off voltage high output voltage low output voltage g vap att ap v hap v lap db v v 54 1.5 1.0 3.5 4.0 v 4.8 4.0 input vi= 240 mv input vi= 100 mv input vi= 170 mv i ohss i olss high output current low output current input vo= 4.0v input vo= 1.0v (30) a tg3on a tg2off attenuation tg3 on attenuation tg3 off tg3 sw="on" rl=2k ohm tg3 sw="off" (30) (30) 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 i ohap i olap high output current low output current input vo= 4.0v input vo= 1.0v (31) (31) (32) (32) (33) (33) (34) (34) (34) (35) (36) (36) (36) (37) (37) ma ma ma ma 30 -0.2 -1.0 0.2 1.0 -4.0 -6.0 4.0 6.0 57 51 v osssoff offset voltage ss off "ss on"mode, refer to v ref "ss off"mode, (34) 0 -35 35 mv 84
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i vi=0.5vrms t 0 vref vi atg on ,atg off =20log vi v 5 vi=50mvrms t 0 vref vi (31)g vss ,attss; ( v 11 ,v 12 ) (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) ?g block 12 11 5 ~ 2k vo tg1 ~ 2k vo tg2 ~ 2k vo tg3 tg1 tg2 tg3 ?s block 19 16 15 17 + 47k 47k + ~ 10k 10k 6.8k 22k 1k vo vi ss off sf sr ss buf note(4/6) + 47k 47k 19 vi vi vi input vi(pin 15 ) a ttss = g vss (ss off=on) g vss (ss off=off) v ref v ref vref=1/2vcc 31 (r1=d0=d1=1)
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (34)v osss ,v sf ,v sr ; 19 16 15 17 + 47k 47k + 10k 10k 6.8k 22k 1k vo ss off sf sr ss buf v osss1 (jp1/sg=l,r0;d0=0,d1=0,d2=1) v osss2 (jp1/sg=l,r0;d0=1,d1=1,d2=0) vsf (jp1/sg=h,r0;d1=1,d0=0) vsr (jp1/sg=h,r0;d1=0,d0=1) v ref ss (32)v hss ,v lss ; 19 16 15 17 + 47k 47k + 10k 6.8k 22k 1k vo ss off sf sr ss buf 10k v in input v in v hss : v in =4.0v v lss : v in =1.0v v ref ss (33)i ohss ,i olss ; 19 16 15 17 + 47k 47k + 10k 6.8k 22k ss off sf sr ss buf 10k v in input v in i ohss : v o =4.0v i olss : v o =1.0v v ref ss vo i oh (i ol ) vref=1/2vcc 32 (r1=d0=d1=1) (r1=d0=d1=1)
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 41 40 40 41 40 41 (35)g vap; (36)att ap, v hap, v lap; apc off (r1;d4=0) , apc on (r1;d4=1) + vo + ~ vo apc va=170mv vi=10mvpp vin input signal vi input vin vi=10mvp-p 0 170mv vi t (37)i ohap, i olap; apc on (r1;d4=1) i ohap :v o =4.0v i ohap :v o =1.0v + vo vin 1k i ohap (i ohap ) apc apc 33
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(5/6) symbol parameter test conditions limit unit (ta=25deg.,vcc=5v,f=1khz,dcba=1000,unless otherwise noted) block min typ max adj g vfe (max) max gain(fe) cut off frequency f hadj "focus gain"mode dcba=1111 c(pin 18 )=2200pf +20.0 +23.0 +26.0 0.7 1.0 1.3 khz v v v v v vph fe + vph fe - vph te + vph te - balance error - voltage (te) balance error + voltage (te) phase error - voltage phase error + voltage phase error - voltage phase error + voltage "focus gain" mode "track balance"mode ,ein=vref-0.2v "track balance"mode ,ein=vref+0.2v 3.1 3.3 3.5 1.5 1.7 1.9 3.1 3.3 3.5 1.5 1.7 1.9 2.8 3.0 3.2 1.8 2.0 2.2 v db g vte (max) g vte (min) b alte (max) b alte (min) max gain(te) min gain(te) max balance(te) min balance(te) "track gain"mode dcba=1111 "track gain"mode dcba=0000 "track balance"mode dcba=0000 % % db db g vfe (min) min gain(fe) "focus gain"mode dcba=0000 0.0 +3.0 +6.0 db v bal v balt + v balt - b alfe (max) b alfe (min) max balance(fe) min balance(fe) focus balance output voltage "focus balance"mode , "focus balance"mode dcba=1111 "focus balance"mode dcba=0000 % % v p0 0.7 -34.8 -31.8 -28.8 +20.0 +23.0 +26.0 0.0 +3.0 +6.0 vin=2.0p-p, refer to vref measurement circuit phase error(90+30)deg. "focus gain" mode phase error(90-30)deg. "track gain" mode "track gain" mode phase error(90-30)deg. 85 86 87 88 89 90 91 92 93 94 95 97-1 98 99 100 34 (10) (10) (21) (21) (10) (10) (21) (21) (42) (42) (43) (43) (44-1) (45) (45) (46) +23.4 +26.4. +29.4 -34.8 -31.8 -28.8 +23.4 +26.4 +29.4 97-2 97-3 v th fbal + v th fbal - fbal ajustment compraretor threshold+ fbal ajustment compraretor threshold- "focus balance"mode , (44-2) (44-2) mv 5 15 25 -5 -15 -25 mv 0.4 refer to vref refer to vref phase error(90+30)deg. "track balance"mode dcba=1111 96
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i note(5/6) (38)g vfe (max),g vfe (min): refer to g vfe measurement (show to (10)) g vfe (max) ; r3 ; d0->d3=1 g vfe (min) ; r3 ; d0->d3=0 (39)g vte (max),g vte (min): refer to g vte measurement (show to (21)) g vte (max) ; r3 ; d4->d7=1 g vte (min) ; r3 ; d4->d7=0 (40)bal fe (max),bal fe (min): refer to bal fe2 measurement (show to (10)) bal fe (max) ; r2 ; d0->d3=1 bal fe (min) ; r2 ; d0->d3=0 (41)bal te (max),bal te (min): refer to bal te2 measurement (show to (21)) bal te (max) ; r2 ; d4->d7=1 bal te (min) ; r2 ; d4->d7=0 (42) v phfe + , v phfe - ; 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. vref=1/2vcc te1 gain adjustment jp1 input circuit a-b 60k 60k 30k 30k 53 54 24 1khz 1khz 60k 60k vib via jp1/sg 1u 20 vo 1u 220k 47p 220k xor cmp 68k 1 2 3 adj gain charge 1 2 3 vo 0 5 2.5 via(vib) signal; phase shift signals (90deg.) refer to jp1/sg at focus gain mode. 1 2 3 vo 0 5 3.3 via(vib) signal; phase shift signals (90+30deg.) refer to jp1/sg at focus gain mode. 35 18
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i te1 gain adjustment jp1 input circuit 55 56 24 18 24 vo 1khz 1khz f-e (43) v phte + , v phte -; 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. 400k 400k 400k 400k 30k 30k vie vif 1u 1u track balance1 track balance2 track gain1 vref=1/2vcc 36 t vref fc=12mhz am fmod=500hz a=1.0v, b=0.8v v 46 a b (44-1) v bal 46 45 focus balance adjustment mode (show to (74/88)) (r2;d3=1,d0->d2=0) input vi (pin 46 ): vi 0.0047u 200k ; fbal 44 focus balance adjustment 18 20 dout logic 27 dout2 v 0 vo vi (44-2) v thfbal+,- v 27 v 44 vref vth - vth + 0 input pin44( comp in) 1u
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i te1 track balance adjustment 55 56 18 20 vo f-e (45) v balt + , v balt -; 400k 1u 1u 400k 400k 30k 30k track balance adjustment mode (show to (72/88)) (r2;d7=1,d4->d6=0) input vi (pin 55 ). v balt + :vi=vref-0.2v v balt - :vi=vref+0.2v vi track balance1 track balance2 track gain1 te1 gain adjustment 55 56 18 20 f-e (46) f hadj ; track gain adjustment mode (show to (76/88)) (r3;d7=1,d4->d6=0) 2200p 1u 400k 400k 400k 400k v ie v if vo g vadj = vo v ie (v if ) f hadj ; 3db down (refer to 500hz) input v ie (v if ) 30k 30k track balance1 track balance2 track gain1 vref=1/2vcc 37 track gain2 te2
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i electrical characteristics(6/6) cmp hysteris mv v hy1s 8 20 refer to v ref (cmp offset sw=on) threshold mv v thc1+ refer to v ref (cmp offset sw=on) 3 10 17 threshold mv v thc1- refer to v ref (cmp offset sw=on) -17 -10 -3 symbol parameter test conditions limit unit block min typ max (ta=25deg.,vcc=5v,f=1khz,cba=100,d=0,unless otherwise noted) khz f lc cut off frequency c(pin 20 )=4.7nf 0.7 1.0 1.3 hysteris mv v hy2s 15 30 45 refer to v ref (cmp offset sw=off) threshold mv v thc2+ refer to v ref (cmp offset sw=off) 5 15 25 threshold mv v thc2- refer to v ref (cmp offset sw=off) -25 -15 -5 measurement circuit 101 102 103 104 105 106 107 38 (47) (47) (47) (47) (47) (47) (48) 32 108 109 u ao v compo f u a adj output comp input offset refer to v ref refer to v ref (49) (50) -10 -25.0 -13.0 0 +10 -4.0 mv mv
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i v 27, v 22 v 20 vref vth - vth + 0 note(6/6) te1 gain adjustment 55 56 18 20 f-e (48) f lc ; track gain adjustment mode (show to (72/88)) (r3;d7=1,d4->d6=0) 4.7n 400k 400k 400k 400k v ie v if vo g vadj = vo v ie (v if ) f hadj ; 3db down (refer to 500hz) input v ie (v if ) (47)v thc1,2 + , v thc1,2 - ,v hy1,2s ; 22 adjustment vo d out2 18 20 1u vhy 1,2 s=vthc 1,2 + - vthc 1,2 - vo d out1 track balance1 track balance2 track gain1 vref=1/2vcc 39 v thc1+ , v thc1- ,v hy1s ; cmp offset=on (focus offset1 adjustment mode (show to (83/88)) v thc2+ , v thc2- ,v hy2s ; cmp offset=off (focus gain adjustment mode (show to (78/88)) 27
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (49)u ao 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 u a signal rs d0=0,rs d1=0,rs d2=0, 18k 220k 22k 1k fs off fs on fe2 fs hold fe1 230k focus gain2 37 36 35 33 32 jp1/sg rs d0,d1,d2=0 vi 5v f=2khz vi t 44 v 0 19 v ref 220k (50)v compo f 40 vref 24 27k 47k 47k vo 1u v ref =1/2vcc 2k buffer amp. adjustment.com.
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i test circuit 0.001u 100k 2k 22k 4.7k 2k 4.7k 1k 1.2m 18k 0.033u 1k 2k 2.2k 47u 3m 1.2m 3.0m focus offset sw track offset sw 47k 47k 100n 100n 2k 27k 240k 3.3k 1 2 1 2 2 1 41 test controller 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 mr/hfok 47k 47k tg3 fs on 47k 56k fe1 reset v ref te1 te2 focus offset focus gain1 track balance1 track balance2 jf jr ts fs tg1 ts off f-e fbal apc a-b hf fg2 sf sr ss track gain1 400k 30k 30k fe2 fs off fg1 fs hold tg2 ts hold ts on tc shock ss buf ss off 400k 60k 60k 30k 10k 10k 5.0k 30k 30k focus balance1 focus balance2 2k 220k 22 22k 2k 220k fzc off 10k focus gain2 track gain2 18k 18k 29 1k 1k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i application circuit f.act cd dsp 560 sl.motor 1k 10u 22 100k mla units resistance :ohm capacitance:f a a track offset sw focus offset sw bias (1/2vcc) + t.act + 42 15 16 17 mcu 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 mr/hfok 47k 47k tg3 fs on 47k 56k fe1 reset v ref te1 te2 focus offset focus gain1 track balance1 track balance2 jf jr ts fs tg1 ts off f-e fbal apc a-b hf fg2 sf sr ss track gain1 400k 30k 30k fe2 fs off fg1 fs hold tg2 ts hold ts on tc shock ss buf ss off 400k 60k 60k 30k 10k 10k 5.0k 30k 30k focus balance1 focus balance2 2k 220k 22k 22k 2k 220k fzc off 10k focus gain2 track gain2 18k 18k 29 1k 1k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i functional description of M62481FP ?cu interface ?ervo circuit ?asic control software (note) this description is based on the typical use of M62481FP. 43
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?ommand table servo control command table ( while the mla is set to "l", clock pulses to the lacth register must be disabled.) register r1 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 register 0 0 0 1 1 0 1 1 kick dis hfd mode dout mode shock en focus offset (3bit) track offset (3bit) track gain (4bit) focus gain (4bit) track balance (4bit) focus balance (4bit) fzc off brake ts servo ss servo fs off tbal focus search fs4 fs3 fs2 fs1 fs0 bw wide tg3 g2 inv hi gain fgain tgain fbal ts hold ss play adj to1 adj fo2 adj fo1 laser on fs hold aut fson r0 r2 r3 rs x x x x x x x x r1 r0 r2 r3 rs x x x x x adj amp2 adj amp1 adj amp0 ( rs: shift resistor, x : not used ) adj to2 ?command timing chart msd mbk mla twck twck 1/fck tsu th td twl d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 h (keep) 44 symbol parameter conditions limits unit fck twck tsu th clock frequency clock width set-up time hold time u sec min typ max 125 khz td twl delay time latch width 4 0.2 4 4 4 u sec u sec u sec u sec 500 2 0.1 2 2 1 1). msd mck mla twck twck 1/fck tsu th d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 2). td twl data is not loaded into servo ic register data is loaded into servo ic register
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i servo control ? laser on mode 1 function r1; d4 0 laser off laser on ?pc amp off ?pc amp on laser on ?-1). fzc shock circiut fzc shock logic hfok 8 fe1 lpf ( adjust) (hfok and mr detector logic) fzc off (r0;d7) k200 g800 fg1 tg1 fg2 tg2 fzc shock ( dout logic ) q fzc ( focus and hold block ) shock in (vth= + 0.7v) (vth= + 0.12v) (1). focus 45 100k 47p 100k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i f-1-1) fzc shock logic fzc off ( r0;d7 ) jp1h ( jp1 input circiut) shock en ( r0;d8 ) hi gain ( r3;d8 ) g2 inv ( r3;d9 ) hfok (hfok and mr detector logic) k200 g800 q fzc (focus and hold logic) fg1, tg1 fzc shock ( dout logic ) fg2, tg2 fe1 lpf 700mv 120mv -120mv -700mv hfok g800 q ff1 k 200 q fzc ff1 ff2 ff3 46
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 47
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-3). focus search circiut ( r1; d8 -> d12 ) 39 pin ; voltage : 2.5 -> 5.0 v ( 16 steps ) 156 mv/step ( r1; d12=1 ) 0 -> 2.5 v ( 16 steps ) - 156 mv/step ( r1; d12=0 ) v cfsr fs3 (d11) 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 0 1 1 0 0 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 0 1 1 1 0 1 1 1 1 1 1 1 fs2 (d10) fs1 (d9) fs0 (d8) pin 39 v cfsr (v) 0.908 fs4 (d12) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 cfsr 0 1 1 1 1 1 0 0 39 fs0 ( r1;d8) fs1 ( r1;d9) fs2 ( r1;d10) fs3 ( r1;d11) 1k 10k 10k 10k fs4 ( r1;d12) 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 vref = 1/2vcc 48 2.067 1.214 1.635 3.949 3.393 2.500 2.946 2.500 1.111 1.009 1.321 1.529 1.424 1.754 1.856 1.961 2.178 2.283 2.391 2.611 2.723 2.834 3.058 3.280 3.169 3.505 3.616 3.727 3.838 4.060 4.169
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 49
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-2). brake detector ( r0; d5=1 ) input condition mirror 1 0 brake signal open close output tc detector ("mirror") ("track") track cross det "1" (note)vcc=5v "0" 62.5mv -62.5mv jump brake operation mr detector hf tc detector te q q d t brake signal 50 mr detector tc detector brake signal te signal mirror track mirror track mirror v tc + v tc -
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (example)single track jump start send jump pulse command dout2=h? (mirror?) time over? no no yes yes end jp1h= "0"-->"1" jp!l= "1"-->"0" wait 300 usec wait 5msec brake cancel brake pulse generation track settling (1) (2) (3) (4) tc out ts out jp1h ts on 0 1 0 1 (1) (2) (3) (4) jf jr ts on brake pluse kick pulse r0; d13=1 ts on (r0; d6,d4,d3=0) ( jump forward ) 51
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-3). track kick logic ( r0 ;) 0 ts servo function 1 0 open close 0 internal jp1h internal jp1l d13 kick dis d4 d3 switches jf jr 0 0 1 x 0 x 0 x 1 0 1 0 1 0 1 0 1 1 1 0 0 0 0 0 0 0 0 x x x x x x 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 open open close open open close open open open open open close open close open open open open close open 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 52 0 x
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i x ss off function 1 0 open 0 internal jp1l switches sf sr 0 0 0 1 1 1 1 0 1 1 0 0 1 close open open open close sledge servo off sledge move forward x close close close close close open open open open open open open sledge move reverse sledge move disabled sledge move disabled sledge servo on ?-1). ss play logic ( r0; ) ss servo d1 d0 ?-2). ss detector + ss play (r0; d2) ss buf 15 (dout logic) ss det ss + in ss+in 15 pin 0 1 0 0 1 r0;d2 ss play 1 0 1 ss det ( dout logic) l l h h ss buf open open open close switch s). ss block sf sr 16 15 10k 17 ss off ss buf ss play logic ss off ss detector dout logic jp1 input circiut ss v ref = 1/2vcc ss+in ss-in ss out v ref =1/2vcc 53 10k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-1). jp1 input circiut u a : sg( internal) 0 ua(v) rs;d0 rs;d1 rs;d2 1 2 3 4 5 7 6 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 +0.15 +0.83 +0.5 +0.36 +0.28 +0.23 +0.17 +0.19 ( vref (standard)) jp1h jp1l 0 jp1/sg 1 tristate 0 1 1 0 0 0 pin24; u a (adjust) jp1h (track kick logic) jp1h (fzc shock logic) jp1l (track kick logic) jp1l (ss play logic) jp1/sg v ref = 1/2vcc 24 16k 16k 8k 8k 4k 2k 54
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-4). track cross detecter block mr (hfok and mr dectector ) te1 output s r q q d t q q tc hs ( dout lgic) tc ls ( dout logic ) d t q q dir ( dout logic ) track cross circuit < 2.5625v > 2.4375v te1 lpf mr ?-1).hfd mode ( r0;d12) 1 hfok mr hfd output mirror detector hfok detector hfd 28 hfok r0;d12 hfd mode 0 mr 39k 1k 1k 39k 55 brake signal ( track hold logic ) 100k 47p tc det lpf sw 100k r3;d11 fbal 1 0 tc det lpf sw open close
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?irror detector circiut 47 mr in 56 bw wide r1;d13 ?fok detector circiut 47 mr in hf out 48 hfok 51k 51k 51k 51k vref-0.19v v ref = 1/2vcc 5.1k 42 hfc 10k brake bit ?mr ratio brake ( r0; d5) 0 1 mr( ratio ) 0.41 :mr-on 0.47 :mr-off t vref a b a b mr(ratio) = = ( normal ) = ( brake ) v 47 mr switch close open mr ( internal) peak hold bottom hold mrc peak hold (low speed) 43 brake r0;d5 18.5k 20k 27.5k 20k 26k v ref = 1/2vcc s r q 13k mr-on mr-off 0.52 :mr-on 0.58 :mr-off 0.41 :mr-on,0.47 :mr-off 0.52 :mr-on, 0.58 :mr-on
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?-2). jump/sledge pulse current 9 i iref r vcc i jf ,i jr = 2r vcc-v be i sf ,i sr = r vcc-v be (example) vcc=5(v),v be =0.7(v),r=100(k w ) i jf ,i jr =21.5 (ua) i sf ,i sr =43.0 (ua) 57
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?l-3). bw wide ( r1 ; d13 ) d13 1 1 time speed 0 8 times speed ?l-4).tg3 ( r3; d10 ) d10 0 tg3 sw 1 off on bw wide track lpf ( khz ) focus lpf( khz) 280 70 265 66 mr detector cut off frequency(khz) 100 30 58
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 59
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i focus servo system1 53 a b focus offset voltage 0.1p 54 focus balance2 focus balance1 focus gain1 jp1 input circuit focus offset judgment focus offset method i foucs search circuit focus offset method ii adj fo2 a b a b focus offset method i focus offset method ii fg2 39 38 ( fe amp, fs amp, focus offset adj, focus gain adj ) fs a b a-b fe1 fe2 fg sig focus gain judgment fg ret 30 31 29 33 32 focus actuator 35 37 36 34 fg1 1k 220k 22k buffer buffer 60k 0.1p 60k 47k 47k 12p 12p 36p 36p 30k adj fo1 fs hold fs on fs off 60 24 230k 44 adj fbal v ref =1/2vcc fzc shock circuit fzc off pin 31 32 pin focus gain2 focus gain3 (offset) 18k fe2 out cfsr fg2 fs -in fs out comp in fg2 fe2 out fe2 -in fg1 fe2 +in fe1 fe1 -in b a jp1/sg osf 30k ( note ) resistors and capacitors without value are externals. bw wide bw wide -b -a 100k 100k 47p 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 61 focus search circuit 39 focus search circuit 29 30 fs (note)resistors and capacitors without value are externals except the resistor for the adjustment. 31 fg2 fg2 fs-in fs out cfsr fe2 out pin 32 focus actuator v ref =1/2vcc v ref
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i focus servo system2 34 53 a b 0.1p 54 51 49 48 46 dsp 34 45 hf signal low speed bottom hold output high speed bottom hold output mirror detector mr (internal) low speed bottom hold circuit bottom hold circuit ( hf amp, focus balance detector ) b a hf fbal 10k 10k 5k 11k 1k 50p 44 focus balance judgment fbal adj2 34 28 c 52 c 5k 0.2p 47 30k 60k 0.1p 60k peak hold circuit hfok detector 42 51k 51k 5.1k hfok ( note ) resistors and capacitors without value are externals. c b a hfc mrc hfd comp in fbo ab hf -in hf out mr in fbi v ref =1/2vcc r1;d13 bw wide (cut off frequency) r0;d5 brake (mr ratio) 62 min.18~max.18k w t 43
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 63 tracking servo system 1 56 f track offset voltage track balance1 track balance2 track gain1 track gain2 track offset method ii b 3 2 b track offset method i e 55 a track offset method ii 1 6 7 5 13 ts track offset judgment track offset method i adj t02 adj t01 12 14 tg3 jf jr f-e te1 te2 18k track gain judgment tg ret tg sig track balance judgment adj tbal a tg1 track actuator e f 4.5p 1.5p 11 tg2 te2 out pin 4 pin 1k 220k 22k ts hold ts on ts off 400k 30k 30k 4.5p 1.5p 400k 11 ( te amp, ts amp, track offset adj, track gain adj ,track balance adj)) pin 15 ss amp. 44 tc detector circuit adj fbal jp1 input circuit 24 270k 7 track gain3 ( offset) te1 -in te1 te2 -in tg1 te2 -in te2 out e f jp1/sg ost tg2 tg3 ts -in ts out comp in ( note ) resistors and capacitors without value are externals. bw wide bw wide v ref =1/2vcc 100k 100k 47p tc det lpf sw 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i tracking servo system 2 64 ( ss amp, s-1).ss play block and s-2). ss detector block ) sf sr 16 15 10k 17 sledge actuator ss off ss buf pin 14 ts out ss play logic ss off ss detector dout logic jp1 input circuit ss ss +in ss -in ss out ( note ) resistors and capacitors without value are externals. v ref =1/2vcc 10k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i adjustment block 65 ( note ) resistors and capacitors without value are externals. *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. 44 jp1 input circuit 24 te1 output (internal) fe1 output (internal) ts out adj fbal 29 fs out adj fo1 14 adj to1 adj fo2 adj to2 fzc shock block adj tbal 3k 68k 68k 330k 2.2k 20 470 18 xor 220k 220k fg ret tg ret a-b output (internal) f-e output (internal) 230k 270k fg sig tg sig te1-in 2 37 fe1-in dout logic track cross detector block track kick block jp1h(internal) clpf comp in detfil jp1/sg 100k cmp offset u a v ref =1/2vcc 47p *1) 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 ) a/d mcu ii ) 6.8k 1 2 switched adj.com. 47p 47p tc det lpf sw switches comparator input is selected by adj-fbal switch control signal 1 2 adj-fbal switch open active not active switching comparetor input adj-fbal switch close active not active
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i adjustment switch bit switch r1 ; d3 adj fo1 adj fo1 0 1 open close bit switch r1 ; d2 adj fo2 adj fo2 0 1 open close bit switch r1 ; d1 adj to1 adj to1 0 1 open close bit switch r1 ; d0 adj to2 adj to2 0 1 open close remark focus offset i adjustment remark focus offset ii adjustment remark track offset i adjustment remark track offset ii adjustment ?adj fo1 (r1;d3) ?adj fo2 (r1;d2) ?adj to1 (r1;d1) ?adj to2 (r1;d0) 66
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 67
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i control bit r0; d9 tbal 0 1 adj tbal open close remark track balance adjustment ?tbal ( r0; d9 ) control bit r3; d13 fgain 0 switches ?bal ( r3; d11), fgain ( r3; d13), tgain ( r3; d12) r3; d12 tgain 1 1 1 1 0 0 0 fg sig fg ret tg sig tg ret adj fbal open open open open open open open open open close close close close remark track gain adjustment focus gain adjustment 0 1 1 1 1 0 0 0 r3; d11 fbal 0 0 0 0 1 1 1 1 focus balance adjustment control circuit example r3;d11(fbal) r3;d12(tgain) r3;d13(fgain) adj gain close close close close open open open open open close close open open open open open close close open close close close close open cmp offset r0;d9(tbal) 68 adj gain open close close close open open open open open close close 0 1 discharge open close remark ?mla/dis pin 23 ( discharge ) mla/dis
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 69 40 apc system r1; d4 laser on/off laser diode (note1)resistors and capacitors without value are externals. 41 vcc vcc apc in apc out 1.157k 500k v 40 v 41 ( v 41 =170mv-->v 40 =2.50v) 7.353k 1.25v 100
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i register loading reset command condition r0 r1 r2 r3 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 power on reset condition mla data is loaded into servo ic register msd mck d13 d14 d15 d12 data is preloaded into latch communication between dsp and mcu on the same clock and data line,but servo ics latches not overwritten. h (must be) h keep 70 26 25 23 d t q r mla msd mck d13 d14 d15 d12 data is preloaded into latch communication between dsp and mcu on the same clock and data line,but servo ics latches not overwritten. h (must be) data isnot loaded into servo ic register 1). 2).
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 19 47k 47k 56k 47k reset logic (i/f) bias amp and reset 71 power on reset v ref v ref 47uf
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 72 adjustment ?(1) track balance ( 16steps , 3.75%step ) recommended register settings (note) sw control open?0" close"1" te1 20 68k 470 2.2k 330k 68k 30k 30k f-e a b c d e f g h discharge dout logic adj tbal adj gain 3k adj fo1 adj fo2 adj to1 adj to2 30k 30k 45k 36.3k 29.3k 106.5k 45k 18.7k 5.1k r0 r1 r2 r3 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 1 x 0 x x 0 0 x 0 0 x x 1 x x x x x d x x x c x x x b x x x a x x x x x 0 x x 0 x x 0 x x 0 x x x x x x x x x x 0 1 0 0 1 0 1 1 clpf v ref =1/2vcc track gain 1 track gain 2 track gain 3 (offset) 100k cmp offset 51.5k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r2;d7 r2;d4 a b c d e f g h 0 0 0 0 1 1 1 1 0 0 1 0 0 0 0 1 0 0 0 1 1 0 0 1 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 (2) .track balance r2;d6 r2;d5 d a c b 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 rate(%) 73 -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 ( r2; ) 1 1 1 1 0 1 1 1 1 0
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?ocus balance ( 16steps ) recommended register settings 54 a b 53 focus balance1 fe1 amp. a b hf focus balance 2 10k 10k 30k 30k a-b e f g h a b c d 34 46 dsp 34 45 fb 5k 11k 1k 50p 44 34 51 34 49 34 48 20 6.8k 470 2.2k 330k 68k discharge 60k 60k 0.1p 0.1p 74 adj fbal adj fo1 adj fo2 adj to1 adj to2 dout logic 47k 47k 12p 12p buffer buffer 30k 30k 45k 36.3k 29.3k 51.5k 106.5k 45k 18.7k 5.1k r0 r1 r2 r3 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 0 x 1 x x 0 0 x 1 0 x x 0 x x x x x x x x x x x x x x d c b a x x x x 0 x 0 x 0 x x x x x 0 x x x x x x x x x x 0 1 0 0 1 0 1 1 36p bw wide 36p a b ab hf -in hf out fbi fbo copm in clpf bw wide 100k cmp offset v ref =1/2vcc 3k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r2;d3 r2;d0 a b c d 0 0 0 0 1 1 1 1 0 0 1 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (2) .focus balance r2;d2 r2;d1 d a c b 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 75 ( r2; ) e f g h 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 1 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 1 1 1 1 0 1 1 1 1 1
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?rack gain ( 16steps , 1.4dbstep) recommended register settings 24 18 xor dout logic te2 amp 68k 220k 220k 470 2.2k 330k set phase shift at 90 deg by reference signal from jp1 (pin 24 ) te1 270k a b c d e f g f-e 2 3 h i k l m discharge 20 76 adj gain adj tbal adj fo1 adj fo2 adj to1 adj to2 adj fbal 3k jp1 input circiut tg sig fg ret tg ret 18k 112k 6k 32k 14.8k 17.5k 6.65k 3.31k 1.83k 1.06k 50k 47k 45k 87.5k 108k r0 r1 r2 r3 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 0 x 0 x x 1 0 x 0 0 x x 0 x x x x x x x x x x d c b a x x x x x x x 0 x 0 x 0 x x x x x 0 x x x x x x x x x x 0 1 0 0 1 0 1 1 27k te1 -in jp1/sg te1 clpf u a 100k cmp offset 68k v ref =1/2vcc x detfil 47p n 95.0k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r3;d7 r3;d4 a b c d e f g 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 (2) -2.track gain r3;d6 r3;d5 d a c b 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 gain(db) 1 - 9.8 - 8.4 - 7.0 - 5.6 - 4.2 - 2.8 -1.4 0 1.4 2.8 4.2 7.0 8.4 r3;d7 h i k l m d a c b 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5.6 9.8 77 - 11.2 r3;d4 r3;d6 r3;d5 n 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 0 0 0 0 0
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?ocus gain ( 16steps , 1.4dbstep ) recommended register setings 24 18 xor 20 fe2 amp 68k 220k 220k 470 68k 330k 2.2k 190k b c d e f g a a-b 37 36 h i k l m discharge 78 adj gain adj tbal adj fo1 adj fo2 adj to1 adj to2 3k fg sig fg ret tg ret jp1 input circiut fe1 dout logic 18k 112k 6k 32k 14.8k 17.5k 6.65k 3.31k 1.83k 47k 45k 87.5k 95.0k 50k 1.06k r0 r1 r2 r3 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 0 x 1 x x 0 0 x 0 0 x x 0 x x x x x x x x x x d c b a x x x x x x x 0 x 0 x 0 x x x x x 0 x x x x x x x x x x 0 1 0 0 1 0 1 1 clpf detfil jp1/sg fe1 -in fe1 u a jp1h set phase shift at 90deg.by reference signal from jp1 (pin 24 ) cmp offset x v ref =1/2vcc 47p 100k n 108k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r3;d3 r3;d0 a b c d e f g 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 (2) -2.focus gain r3;d2 r3;d1 d a c b 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 gain(db) 1 79 - 9.8 - 8.4 - 7.0 - 5.6 - 4.2 - 2.8 -1.4 0 1.4 2.8 4.2 7.0 8.4 -11.2 5.6 9.8 ( r3; ) r3;d3 h i k l m 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 d a c b 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r3;d0 r3;d2 r3;d1 n 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 0 0 0 0 0
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?rack offset mcu shood adjust output voltage of ts amp. (1) track offset method i ( 8steps ) recommended register settings 80 r3 r0 r1 r2 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 x 0 x x 0 0 x 0 0 x x 0 x x 0 x x x x 0 x 0 x 0 x x x x x 0 0 x 0 x 1 x x x x x 0 x x x x x x x 0 1 0 0 1 0 1 1 c b a x x x x r3 x 55 e track balance1 track balance2 track gain1 f 56 ts track offset method i adj to2 adj to1 f-e te1 1 f e 400k 30k 30k 3k 2.2k 330k track offset voltage track gain2 3 2 6 7 5 te2 tg1 4 220k 22k ts hold ts on ts off 68k adj tbal adj gain 470 adj fo1 adj fo2 track cross detector circiut dout logic 4.5p 1.5p bw wide 4.5p 1.5p bw wide 400k 18k pin 11 20 te1 -in te1 te2 +in tg1 te2 -in te2 out ost e f tg ret clpf cmp offset 68k v ref =1/2vcc track gain3 (offset) jf jr 13 12 tg3 track actuator 11 tg2 te2 out pin pin 15 ss amp. 7 tg2 tg3 ts -in ts out 14 100k 100k 47p 100k tc detlpf sw tg sig 270k 2k 1k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (2) track offset method ii ( 8steps ) recommended register settings 81 mcu shood adjust output voltage of te1 amp. r3 r0 r1 r2 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 x x 0 x x 0 0 x 0 0 x x 0 x x 0 x x x x 1 x 0 x 0 x x x x x 0 0 x 0 x 0 x x x x x 1 x x x x x x x 0 1 0 0 1 0 1 1 c b a x x x x r3 55 e track balance1 track balance2 track gain1 f 56 ts track offset method i adj to2 adj to1 f-e te1 1 f e 400k 30k 30k 3k 2.2k 330k track offset voltage track gain2 3 2 6 7 5 te2 tg1 4 1k 220k 22k ts hold ts on ts off 68k adj tbal adj gain 470 adj fo1 adj fo2 dout logic 4.5p 1.5p bw wide 4.5p 1.5p bw wide 400k 18k pin 11 20 te1 -in te1 te2 +in tg1 te2 -in te2 out ost e f tg ret tg sig clpf cmp offset 68k v ref =1/2vcc track gain3 (offset) jf jr 13 12 tg3 track actuator 11 tg2 te2 out pin pin 15 ss amp. 7 tg2 tg3 ts -in ts out 14 100k 100k 47p 100k track cross detector circiut tc detlpf sw 270k 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r2;d13 r2;d12 r2;d11 c b a a b c d e f g h voltage(v) 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -2. track offset voltage source offset voltage 1 10k 2k 2k 2k 2k 2k 2k 2k 2k 10k a b c d e f g h 1.39 1.67 1.94 2.22 2.50 2.78 3.06 3.33 ( r2; ) ost 82
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i ?ocus offset (1) focus offset method i ( 8steps ) recommended register settings 83 r3 r0 r1 r2 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 x x 0 x x 0 0 x 0 0 x x 0 x x 0 x x x 0 x 1 x 1 x x x x x x x 1 x 0 x 0 x x x x x 0 x x x x x x x 0 1 0 0 1 0 1 1 c b a x x x x r3 mcu shood adjust output voltage of fs amp. focus balance2 focus balance1 focus gain1 focus offset method i adj fo2 adj fo1 38 a-b fg sig fg ret dout logic 3k 470 68k 330k 2.2k focus offset voltage fe1 fe2 fg1 charge 1k 220k fs hold fs on fs off 22k 68k adj to1 adj to2 adj tbal adj gain 53 a b 0.1p 60k 60k 54 a b 0.1p 30k 47k 12p 36p 30k 47k 36p focus gain2 18k 20 fe2 out fe2 -in fg1 fe2 +in fe1 fe1 -in osf 36 33 32 35 37 34 a b bw wide bw wide clpf cmp offset v ref =1/2vcc fg2 30 31 29 focus actuator 32 pin fe2 out fg2 fs -in fs focus gain3 (offset) 12p 31 pin 100k fzc shock circiut fzc off 100k 47p 100k 230k 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (2) focus offset method ii ( 8steps ) recommended register settings 84 r3 r0 r1 r2 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 x x 0 x x 0 0 x 0 0 x x 0 x x 0 x x x 1 x 0 x 0 x x x x x x x 0 x 1 x 0 x x x x x 0 x x x x x x x 0 1 0 0 1 0 1 1 c b a x x x x r3 mcu shood adjust output voltage of fs amp. focus balance2 focus balance1 focus gain1 focus offset method ii adj fo2 adj fo1 38 a-b fg sig fg ret dout logic 3k 470 68k 330k 2.2k focus offset voltage fe1 fe2 fg1 1k 220k fs hold fs on fs off 22k 68k adj to1 adj to2 adj tbal adj gain 53 a b 0.1p 60k 60k 54 a b 0.1p 30k 47k 12p 36p 30k 47k 36p focus gain2 18k 20 fe2 out fe2 -in fg1 fe2 +in fe1 fe1 -in osf 36 33 32 35 37 34 a b bw wide bw wide clpf cmp offset v ref =1/2vcc fg2 30 31 29 focus actuator 32 pin fe2 out fg2 fs -in fs focus gain3 (offset) 12p 31 pin 100k fzc shock circiut fzc off 100k 47p 100k 230k 2k
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i r2;d10 r2;d9 r2;d8 c b a a b c d e f g h voltage(v) 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (2) -2. focus offset voltage source offset voltage 38 10k 2k 2k 2k 2k 2k 2k 2k 2k 10k a b c d e f g h 1.39 1.67 1.94 2.22 2.50 2.78 3.06 3.33 85 ( r2; ) osf
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i flow chart of automatic adjustment (1)basic routine start initilization move pick-up to inside kick disc motor start focus search dout1,2=0 no yes balance adjustment start track servo crc=1 no yes tracking gain adjustment end focus gain adjustment offset ajustment i offset ajustment ii 86
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i (2)automatic adjustment start initilization for adjustment dout1,2=0 no yes dcba<-dcba-1 ( cba <- cba -1) send new command dout1,2=1 no yes end serial data command:dcba(the adjustment item) dcba>0 yes dout1,2=0 no yes dcba<15 yes no no (note)it's possible to control the tracking balance by (dcba(cba)) 0 t t (example) v clpf pin 27 data out pin 20 , 21 dcba<-dcba-1 ( cba<-cba-1 ) send new command dcba<-dcba+1 ( cba<-cba+1 ) send new command dcba<-dcba+1 ( cba <-cba +1) send new command (cba>0) ( cba<7) 87
electric mitsubishi ( / 88 ) mitsubishi sound processor lsi M62481FP pickup servo system with automatic adjustment d-62481-87i 88 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). 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. 0 -90 -270 -360 100hz 1khz 10khz -180 adjustment frequency figure 1: phase diagram of pick up + servo application note 2 3 M62481FP te1 amp tg figure 3: circuit examples te amp. - input te amp. gain control te2 amp. note. please correspond to phase turbulences with software. vref=1/2vcc 270k tg sig jp1 input circiut below figure shows the feed-in circuit in the track servo. 0 -90 -270 -360 100hz 1khz 10khz -180 phase turbulences example adjustment frequency is shifted to a lower or higher frequency figure 2: phase diagram of pick up + servo with phase turbulence

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