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automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi description the M62475FP is an ic that contains preamplifier/servo amplifier necessary for optical pickup servo control for cd player. this ic also supports automatic adjustment with microcomputer control. outline 42p2r-a 0.8 mm pitch 450 mil ssop (8.4 mmx17.5 mmx2.0 mm) automatic adjustment cd preamplifier servo controller M62475FP mitsubishi sound processor ics features pickup servo control can consist of the M62475FP only supporting 3-beam system built-in serial data command interface with mcu to reduce load on mcu built-in circuit for automatically adjusting tracking balance, tracking/focus gain built-in internal self reset circuit recommended operating conditions supply voltage range..............................................v cc= 4.5 to 5.5v rated supply voltage.......................................................... v cc= 5v system configuration focus actuator tracking actuator slide motor hf preamplifier fe preamplifier apc te preamplifier focus search focus servo automatic adjustment tracking servo slide servo reset mcu i/f M62475FP dsp for cd mcu for control optical pick-up pd ld 1
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi built-in function iv amplifier hf amplifier:hf (high frequency amp.) focus error amplifier:fe (focus error amp.) focus servo amplifier:fs (focus servo amp.) tracking error amplifier:te (tracking error amp.) tracking servo amplifier:ts (tracking servo amp.) sledge motor servo amplifier:ss (sledge servo amp.) switching circuit for jump brake: tg1sw, tg2sw (tracking gain sw) jf sw, jr sw (jump forward/reverse sw) sf sw, sr sw (sledge forward/reverse sw) focus search circuit search signal generator fsok detector track cross detector: tc det (track cross detector) shock detector: sc det (shock detector) logic controller: serial data command interface jump, brake, focus search control adjustment control vcc/2 generation circuit auto laser power control: apc (automatic laser power control) hf bottom level detector mr detector automatic adjustment circuit tracking balance adjustment circuit tracking gain adjustment circuit focus gain adjustment circuit gain adjustment signal generation and phase detection circuit pin configuration (top view) M62475FP a b c e f sgt te teg abc hfi hfo mrc apc out apc apc cfsr tg1sw te out sgf fe tc/shock ts feg fs tg2sw ts fsout v cc ts out riref ss clpf ss dout ss out msd detfil mck bias 1 2 3 4 5 6 7 8 42 41 40 39 38 37 36 35 9 10 34 33 11 12 32 31 13 14 30 29 15 28 16 27 17 26 18 25 19 24 20 23 jp1/sg 21 22 mla/dis gnd - + - + - + - - - outline 42p2r-a ic internal block diagram hf amplifier 22k 22k 47k tc/sh sw ts1 sw 100k 220k 220k 220k 2.2k 18k 39k 39k abcef focus search adjust 47k 56k 47k bias (com) v cc /2 47k i/f 22k 220k 12k fs sw 2.2k a-b apc mirror 10k 10k 4.7k a+b+c reset sr sw sf sw ss sw jr sw jf sw tg2 sw tg1 sw 47k fe gain control fs output reference current power supply data output clock input latch input sgf output apc non- reverse input apc output hf output abc output jp1 input data input constant for adjustment filter fs reverse input fe reverse input constant for focus search apc reverse input hf reverse input constant for mirror tc/ shock tg2 sw ts output ss reverse input constant for adjustment filter tg1 sw te reverse input f input c input a input e input b input sgt output te gain control te out ts non- reverse input ts reverse input ss non- reverse input ss output input reference voltage gnd mr tc/shock det 30 29 27 26 24 28 22 25 23 31 40 39 37 36 34 38 32 35 33 41 42 13 14 16 17 19 15 21 18 20 12 3 4 6 7 9 5 11 8 10 2 1 fs amplifier ss amplifier ts amplifier te amplifier i/v amplifier fe amplifier 2
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi absolute maximum ratings (ta=25?c, unless otherwise noted) symbol parameter ratings unit v cc v i p d k t opr t stg supply voltage input voltage power dissipation thermal derating (ta 25?c) operating ambient temperature storage temperature 5 0 to v cc 750 7.5 -20 to +75 -40 to +125 v v mv mw/?c ?c ?c pin description ts pin no. symbol function a b c e f sgt teg tg1 sw te out tc/shock tg2 sw ts out ss out det fil bias gnd mla/dis jp1/sg mck msd dout clpf iref vcc fsout feg sgf cfsr apc out mrc hf out abc i-v amplifier a input tracking servo signal output te amplifier reverse input te amplifier gain control tracking gain select switch 1 te amplifier output tracking cross/shock detector input ts amplifier non-reverse input ts amplifier reverse input ts amplifier output ss non-reverse input ss amplifier reverse input ss output detector filter for gain adjustment vcc/2 voltage output ground latch of serial data from microcomputer to servo ic/discharge of lpf for automatic adjustment control signal of 1 track jump brake pluse/input of gain adjustment clock serial data transfer clock from microcomputer to servo ic microcomputer serial data output of data to microcomputer connects capacitor for determining the constant for automatic adjustment lpf connects resistance for setting current value of reference supply current power supply fs amplifier output fs amplifier reverse input fe amplifier gain control fe amplifier reverse input focus servo signal output apc amplifier non-reverse input apc amplifier reverse input apc amplifier output constant for mirror hf amplifier reverse input hf amplifier output iv amplifier (a+b+c) output te ts ss ss fs fe apc apc hf i-v amplifier b input i-v amplifier c input i-v amplifier e input i-v amplifier f input tracking gain select switch 2 connects the capacitor to determine the constant for focus search waveform 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 + - - + - + - - - - 3
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi electrical characteristics (ta=25?c, vcc=5v, f=1khz, cba=100, unless otherwise noted) limits min. typ. max. 20.0 30.0 2.4 2.5 3.1 5.1 9.7 11.7 1.4 2.0 3.5 4.0 1.0 -60 0 -0.22 -0.16 0.35 0.45 0.46 0.56 20 30 25 27 60 4.0 -10 0 24 3.5 4.0 1.0 -2 0 19.3 21.3 60 3.5 4.0 1.0 -50 0 +0.6 +0.8 -1.0 -0.8 -0.22 -0.16 7.0 9.0 3.5 4.0 1.0 -25 0 -1.5 +1.5 -0.6 1.4 60 3.5 4.0 1.0 -25 0 40.0 2.6 7.1 13.7 1.5 +60 -0.10 0.55 0.66 29 1.0 +10 6 1.5 +2 23.3 1.5 +50 +1.0 -0.6 -0.10 11.0 1.5 +25 +4.5 3.4 1.5 +25 unit ma v db db mhz v v mv v khz db db v v mv v db v v mv v % db db v v v v db v mv % v v db db mv symbol icc v ref g vhfab g vhfc f hf v hhf v lhf v oshf v tfk r mn r mj f mr g vap a ttap v hap v lap v osap g vfe b alfe g vfs a ttfs v hfs v hfe v lfe v lfs v osfs v fzc g vte b alte v hte v lte v oste g vts a ttts v hts v lts v osts v fsr v fsr test conditions with no signal provided, after reset "shock" mode "brake" mode f=500khz,vi=0.5v p-p f=500khz,vi=0.5v p-p vref reference vref reference "shock" mode with no signal provided, after reset vi=0.5v p-p comparison with g vap vref reference vref reference comparison with g vfe comparison with g vfs vref reference, pin vref reference, pin vref reference vref reference vi=4.0v vi=1.0v vi=20mvrms vi=4.0v vi=1.0v vref reference vi=10mvrms vi=4.0v vi=1.0v vi=50mvrms vi=4.0v vi=1.0v vref reference vi=50mvrms vi=4.0v vi=1.0v vi=50mvrms vi=4.0v vi=1.0v comparison with g vts 35 35 parameter circuit current reference voltage gain (input a/b) frequency characteristics output voltage "h" fsok level ratio (normal) attenuation (apc off) gain (input c) output voltage "l" output offset ratio (jump) frequency characteristics output voltage "h" output voltage "l" input offset output voltage "h" balance attenuation (fs off) focus zero cross voltage focus search voltage output voltage "l" output voltage "h" output offset output voltage "l" focus search voltage track balance output voltage "h" output offset output voltage "l" attenuation (ts off) output voltage "h" output voltage "l" output offset gain gain gain gain gain block hf fs ok mr apc fe fs te ts fsr + - + - 4
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi phase detection exit low pass filter gain low pass filter gain comparator level sgf output voltage sgf output voltage sgt output voltage sgt output voltage comparator level balance voltage balance voltage phase difference voltage phase difference voltage phase difference voltage phase difference voltage 82.5 electrical characteristics (ta=25?c, vcc=5v, f=1khz, cba=100, unless otherwise noted) (cont.) limits min. typ. max. unit symbol test conditions parameter block shock tc ss tg reset adj cmp sg v tc v jf v jr g vts a ttss v hss v rst v lss v osss v sf v sr a tg1on a tg2on a tg2off a tg1off v orst v tc v sh v sh g vfe(max) b alte(min) v phfe g ladj b alte(max) g vte(max) g vfe(min) g lc g vte(min) v phfe v phte v phte v bal v bal v thc v thc mv mv jump voltage (forward) jump voltage (reverse) shock voltage mv mv v v +0.10 +0.15 +0.20 -0.20 -0.15 -0.10 +42.5 +62.5 +82.5 -42.5 -62.5 +110 +140 +170 -170 -140 -110 v v mv gain attenuation (ss off) reset voltage db db v slide voltage (forward) slide voltage (reverse) v v attenuation (tg1 on) 10 12 14 60 3.5 4.0 1.0 1.5 -25 0 +25 +0.65 +0.95 +1.25 -1.25 -0.95 -0.65 2.1 2.3 2.5 10 20 02 10 20 02 db db db db attenuation (tg1 off) attenuation (tg2 on) attenuation (tg2 off) output voltage "h" output offset voltage output voltage "l" output voltage 3.5 4.5 v track cross voltage track cross voltage shock voltage max. gain (fe) min. balance (te) 3.5 5.5 7.5 -12.8 -9.8 -6.8 v 3.1 3.3 3.5 -5 -3 -1 db max. balance (te) 8.0 11.0 14.0 % % max. gain (te) 19 21 23 db min. gain (fe) -3.5 -1.5 0.5 db db v 1.5 1.7 1.9 3.1 3.3 3.5 v v 1.5 1.7 1.9 v 1.8 2.0 2.2 db -5 -3 -1 v 2.8 3.0 3.2 db min. gain (te) 12 16 14 mv 0 +50 mv -50 0 0.6 0.7 0.8 v -0.8 -0.7 -0.6 v 0.6 0.7 0.8 v -0.8 -0.7 -0.6 v "brake" mode, vref reference "brake" mode, vref reference "shock" mode, vref reference "shock" mode, vref reference "jf" mode, vref reference "jr" mode, vref reference "sf" mode, vref reference "sr" mode, vref reference vref reference "shock" mode, vref reference "shock" mode, vref reference "shock" mode, vref reference "shock" mode, vref reference comparison with g vss pin pin , after reset focus gain" mode cba=111 "track balance" mode cba=000 "focus gain" mode phase difference (90+30)? "track balance" mode cba=111 "track gain" mode cba=111 "focus gain" mode cba=000 "focus gain" mode phase difference (90-30)? "track gain" mode phase difference (90+30)? "track gain" mode phase difference (90-30)? "track balance" mode -0.5v offset "track balance" mode +0.5v offset "track gain" mode cba=000 vref reference vref reference pin , vref reference pin , vref reference pin , vref reference pin , vref reference c (pin )=2.2nf c (pin )=680pf vi=50mvrms vi=4.0v vi=1.0v 34 34 6 6 19 27 20 36 v sgf v sgf v sgt v sgt + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - 5
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi fsr detector when the focus search is performed, the focus search direction is automatically switched. the focus search always starts from the side. the polarity ( / direction) internal logic signal of the focus search voltage is used for control and switching. fzc detection is effective only in a direction. setting fsr time t fsr (c fsr setting) c fsr :cfsr pin external capacitor i fsr :focus search current at time of rising:110? at time of falling:60? fsr vth voltage setting vth+:vref+0.7v vth-:vref-0.7v equivalent circuit function description setting built-in constant current source current value the current value of tracking servo (ts) and sledge servo (ss) constant current can be set with resistance value rx connected between pin and vcc. if the absolute values for ts and ss constant source current values are assumed to be i (jf, jr) and i (sf, sr) , respectively, they are set as follows. where, v is the voltage of pin . if the voltage of pin (gnd) is assumed to be v , v can be found by the following formula. v = v + v be (v be = 0.7v standard) 28 fzc operation timing chart constant current source block diagram t fsr = c fsr i fsr vref va t vref vb t t fsr tup tdown v fsr+ focus search operation focus servo on vc v fsr- a b 28 29 14 current reference v be r x v cc i jf i jr 17 i sf i sr M62475FP 35 31 30 focus search circuit search voltage detection M62475FP a b zero cross 28 21 28 21 28 i (jf. jr) = i (sf, sr) = v cc -v rx 28 1 8 v cc -v rx 28 1 4 28 21 + - + 35 6
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi automatic adjustment function the ic is capable of automatically adjusting the three places of tracking balance, tracking gain and focus gain. tracking balance adjustment the input resistance of the i/v conversion amplifier connected to e and f pickups and the 8-step adjustment resistance built in a feedback resistance are switched for the adjustment. the adjustment precision is approximately 3% by the step. the automatic adjustment operation enters an oscillation signal from the automatic adjustment signal generator of mcu into a servo loop to forcibly make the beam cross the track. when this is the case, the output voltage of i/v conversion amplifier is integrated. if the e and f output signals are well balanced and are the same, an error voltage is not generated in the output voltage after this integration and a reference voltage is obtained. if they are not balanced, a voltage of a dc component is generated. the result of having compared this output voltage and the reference voltage is converted into a logical level and is then output to the monitor terminal. the mcu is used for control and the result is j udged. according to the result, the adjustment resistance of the i/v conversion amplifier is sequentially switched step by step fo r the adjustment in the direction of reversing the current logical result. at the time when the result has been reversed, the error is j udged to be put within a one-step error and the adjustment is complete. tracking focus gain adjustment the input resistance of the tracking focus error amplifier and the 8- step adjustment resistance built in a feedback resistance are switched for the adjustment. the adjustment precision is approximately 1 db by the step. the adjustment operation enters an oscillation signal with the output gain of -3 db in a servo loop from the automatic adjustment signal generator of mcu into a servo loop to forcibly generate a gap in the track and focus. a waveform adjusted signal of the generated tracking focus error signal and the mcu oscillation signal are collated with each other with respect to the phase and is then integrated to convert the phase difference into the voltage. the result of having compared this output voltage and the reference voltage is converted into a logical level and is then output to the monitor terminal. the mcu is used for control and the result is judged. according to the result, the input resistance of the amplifier is sequentially switched step by step in feedback resistance for the adjustment in the direction of reversing the current logical result. at the time when the result has been reversed, the error is judged to be put within a one-step error and the adjustment is complete. equivalent circuit (tracking balance) equivalent circuit (tracking focus gain) ex-or mcu command latch signal bias voltage voltage comparison actuator to data-out mcu tracking actuator or focus actuator gain adjustment error amplifier voltage comparator monitor terminal (to mcu) tracking actuator adjustment resistance i/v conversion amplifier adjustment resistance bias voltage bias voltage pd f e 7
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi automatic adjustment example 0 t t 5 6 5 cba=4 v adj command end of adjustment mcu check point 26 27 dout pin clpf pin vthc+ vref vthc- 0 t t 7 6 5 cba=4 adj command end of adjustment mcu check point 26 27 dout pin clpf pin vthc+ vref vthc- v 6 start initialization for xx data out=0 cba > 0 setting of cba cba-1 data out=1 setting of cba cba+1 end no yes no no no no yes yes yes yes cba < 7 setting of cba cba+1 data out=0 setting of cba cba-1 automatic adjustment flowchart basic routine serial data command: xxooocba (xx is specified according to the adjustment command.) 8
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi d3 d2 track2 track 00 01 10 11 d3 d2 00 01 10 11 ts off jr jf ts on sledge ss off sr sf ss on command function d5 focus fs on ?apc amplifier on ?focus search start to servo on (ps sw="open") mode data 1 on 0 off brake track1 shock d4 1 0 track servo off reverse jump forward jump track servo on for tssw, jf sw, and jr sw, refer to 'track function table'. sledge servo off reverse sledge forward sledge sledge servo on for ss sw, sf sw, and sr sw, refer to 'track function table'. ?apc amplifier off ?focus servo off (fs sw = "close") jump brake (jump setting) operation opens/closes tssw. controls sw 'tg sw' for track gain switching. 25 serial command function table command name d7 d6 d5 d4 d3 d2 d1 d0 data out pin output servo 0 0 sledge track focus fsok/tc track balance 0 1 adj a b c track gain 0 1 adj a b c focus gain 1 1 adj a b c msd pin input mode selection command status setting brake /shock 25 note 1. output from dout pins is automatically switched by selecting each mode. 2. the status in the servo mode is set with two bits for each of command track (d3,d2) and sledge(d1,d0). command function table 25 serial command function an 8-bit shift register is installed in the logic controller to convert (decode) serial data (msd pin ) from the microcomputer into a command for the servo ic. function description of data-in of the 8-bit data, high order 4 bits (d7 to d4) is used to select a command mode and low-order 4 bits (d3 to d0) are used to set (instruct) the command status. commands in the same mode can be given concurrently with data transferred once. they are held until new data is entered. therefore, the command status is held if another mode is selected. 9
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi logic input conditions f ck t wck t su t h clock frequency clock pulse width setup time hold time ? khz t d t wl delay time latch pulse width ? ? ? ? 100 200 2.5 5 0.1 0.2 2.5 5 2.5 5 15 limits min. typ. max. symbol test conditions unit parameter input mirror 1 ("mirror") 0 ("track") tc det ts sw status open (track servo off) close (track servo on) output 1 ("shock") 0 ("normal") shock det tg sw status open (shock mode) close (normal mode) output input +- note 4. tc/sh sw "open" 5. v and v are set with external constant. t su t h t d t wl t wc k t wck 1/f ck lsb msb d6 d5 d4 d3 d2 d1 d0 d7 msd pin input mck pin input mla pin input 25 24 22 "1" "0" track cross det vref-62.5mv vref+62.5mv te "1" "0" shock detector v - v + te vref note 3. tc/shsw "close", tg sw "open" serial data (msd) transfer method data is transferred with lsb first and the mla signal is sent to execute the command. serial data input timing chart brake setting the break command to "1" performs the jump brake operation to improve the jump setting capability after the trac k j ump. jump brake operation the track servo loop is set to off with tc=" " (at the falling edge of tcdet output) when mr is 1. the track servo loop is set to on with tc=" " (at the falling edge of tcdet) when mr is 0. jump brake true value list (effective in the ts on mode) shock with the shock command set to "1", the shock operation is carried out to switch the track gain at time of shock. jump brake operation with shock detect=1, the track gain is placed in the shock mode. with shock det=0, the track gain is placed in the normal mode. shock true value list (effective in the ts on mode) 10
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi ts off jr jf ts on d3 d2 ts sw open (servo off) input data 00 0 0 1 1 11 open (servo off) open (servo off) close (servo on) jf sw off off off on jr sw off off off on command output (sw status) track function table sledge function list ss off sr sf ss on d1 d0 ts sw close (sledge off) input data 00 0 0 1 1 11 close (sledge off) close (sledge off) open (sledge on) sf sw off off off on jr sw off off off on command output (sw status) direct command function jp1 signal when a 1-track jump takes place, serial data to be transferred twice can be omitted to control the amount of delay in processing time. jp1 is generally set to "1". when jp1 is set to "0" with tc (data out) signal set to "1", the logic controller automatically reverses the j ump polarity (jf to jr or jr to jf). when a jump is complete (after fixed time ta), switching jp1 from "0" to "1" can automatically terminate jf and jr to select the tr on/sson status. signal waveform with a jump kick pulse (jf or jr) brake pulse ta ts out jp1 11
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi jp1 signal true value list logic output function data out data out output is switched according to the serial command (d6, d7="0", "0") mode (see the serial command function list). the output corresponding to the serial command mode sent last is given. data out output corresponding list fsok focus (0010xxxx) track (0001xxxx) (1) (2) data out signal name tc serial command mode (input) (1) fs on with fs sw=open (servo on), fsok "0" is output. fsok true value list close (servo off) input ff sw status close (servo on) output fsok 1 0 while fs ok is set to "1", ts sw is open (servo off) and ss sw is open regardless of the command status. (2) tc the tc signal that latches the mr signal at the edge (falling edge) of tcdet output is output. tc true value list "1"mirror "0"track tc det input mr output tc 1 0 mr signal detector detects an envelope of the hf signal and sends data to the internal logic controller. jp1 (input) 1 1 0 tsoff ts on jf jr ss off ss on sf 00 11 10 01 00 11 10 01 tsoff ts on jf jr ss off ss on sf sr tsoff ts on jr jf ss off ss on sr sf sr track (d3, d2) sledge (d3, d2) track mode 0 1 12
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi control method flowchart example note: since this description applies to an example on the item related to the servo, take into account the entire system when using this. in addition, pay attention to the simplification/reduction of actions in abnormal status. power_reset :processing with power turned on disc_start :disk start processing balance_adj :track balance processing track_adj :track gain adjustment focus_adj :focus gain adjustment adjust :adjustment routine se_out :adjustment signal output routine jump control 8-1. single_jump 8-2. short_jump 8-3. mid_jump 8-4. long_jump disc_start disc_start move pick-up to outside [00000010] sending pick-up innermost circumference ? no yes spindle motor rotation start wait 50 msec focus on sending [00100000] move inside [00000001] sending data out=0 ? track servo on [00101111] sending yes no focus_adj balance_adj hfd=0 crc=1 ? yes no track_adj focus_adj balance_adj end track balance adjustment focus gain adjustment tracking gain adjustment dsp read check track balance conflict adjustment focus gain preparatory adjustment focus servo check note:pick-up servo operation preparatory completion. for example, reading toc requires to move pick-up to the innermost circumference. power_reset power_reset system initialization set adjustment initial value (send the default value) bal=100 foc=100 tra=100 end note:bal :track balance foc :focus gain tra :track gain 1 2 3 4 5 6 7 8 1 2 13
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi balance_adj track_adj focus_adj adjust sg_out balance_adj hfd=1 zz=01 cba=bal adjust bal=cba hfd=0 end track_adj zz=10 cba=tra adjust tra=cba end focus_adj zz=11 cba=foc adjust foc=cba end sg_out adjust t=50 t=25 sg_out cba=cba-1 cba=cba+1 send [zz000cba] end data out=0 ? cba > 0 ? data out=1 sg_out cba=cba+1 cba=cba-1 cba < 7 ? data out=0 yes no yes no yes no yes no yes no send [zz000cba] no latch signal sg_out zz=11 yes no end zz=10 yes no hold "l" for t msec latch si g nal jp1 1300 hz output for 160 msec jp1 1800 hz output for 160 msec jp1 80 hz output for 160 msec (for t msec lpf capacitor discharge) note: set the frequency of the adjustment signal according to the system. 3 4 5 6 7 14
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi jump control the jump control is divided into the following four types according to the track count. to 1000 n: track count (standard) 1 to 5 6 to 16 to 100 8-1. single_jump 8-2. short_jump 8-3. mid_jump 8-4. long_jump type (note) put the check routing of the hfd status in a program. read the main routine and sub-codes for check, regardless the jump control. 8-1. single_jump 8-2. short_jump send [00111111] (no latch signal) single_jump data out=1 yes no end move to the inside yes no jp1=0 wait 260sec send latch signal n=0 yes no hfd=1 send [00100100] send [00101000] wait 5?ec n=n-1 jp1=1 send [00111111] data out=0 yes no hfd=0 hfd=1 short_jump hfd=1 move to the outside send [00100100] send [00101000] set timer to 5 msec send [00101111] end sj2 sj1 count jp1=0 catch jp1=1 wait 15msec jp1=1 hfd=0 8 15
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi count yes no nby2=n/2 time over nby2=n/2 nby2 > 0 no yes yes no no yes yes no set timer to 5 msec data out=1 data out=1 time over end send [00111111] (no latch signal) catch jp1=0 lc=180?ec/ (loop time) loopn=lc yes no data out=1 yes time over ? lc=lc-1 lc=0 no no lc=loopn yes no data out=1 yes time over ? lc=0 lc=lc-1 yes no no send latch pulse end 16
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi 8-3. mid_jump 8-4. long_jump mid_jump jp1=1 move to the outside send [00111010] send [00110101] sj2 wait 4msec hfd=1 catch set timer to 8 msec jp1=0 yes no (jump to the short_jump label) long_jump move to the outside send [00111010] send [00110101] sj2 wait 150msec hfd=1 set the timer to 120 msec yes no (jump to the short_jump label) send [00111000] wait 30msec 17
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi test circuit units resistance : capacitance :f 39k 39k 18k 220k 220k 100k 4.7m 47k 100k 1k 2.2k 56k 1k 39k 4.7k 6.8k 100k 2.2k 22k 47 680p 6.8k 1.8k 100k 1.2m 150k 200k 1.8k 2.2k 4.7k 470k 22 0.047 100k 1k 1k 22k 100n 18k 18k 1 0.047 10 5v 100k 2.2n test controller 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 a b c e f sgt te teg tg1sw te out tc/ shock ts tg2sw ts ts out ss ss ss out detfil bias gnd - + - + - abc hfi hfo mrc apc out apc apc cfsr sgf fe feg fs fsout v cc riref clpf dout msd mck jp1/sg mla/dis + - - - 10k 18
automatic adjustment cd preamplifier servo controller mitsubishi sound processor ics M62475FP ( / 19 ) electric mitsubishi typical characteristics application example thermal derating (maximum rating) ambient temperature ta (?c) power dissipation p d (mw) 0 25 50 75 125 200 400 600 1000 100 800 0 750 375 22n 15k 1 56k 3.3k 5.6k 82k 100p 1m 100k 39k t.act sl.motor 100n 4.7 10k 2.2 5.6k 0.22 6.8k 39k 100 100n 47 0.22 22k 27 10k 100n 6.8k 6.8k 39p 10k 0.47 1k 3.3m 100k 82p 1.5m 680k 22n 68k 1k 39k 22n 10 47 2.2 56k data out data in clock jp1/sg mla/disch hfd mla ts ss 22k 22k 47k tc/sh sw ts1 sw 100k te 220k 220k 220k 2.2k 18k 39k 39k abcef focus search adjust 47k 56k 47k bias (com) v cc /2 47k i/f 22k 220k fe fs 12k fs sw 2.2k a-b apc mirror 10k 10k 4.7k hf a+b+c reset sr sw sf sw ss sw jr sw jf sw tg2 sw tg1 sw 47k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 mcu cd dsp f.act resistance: capacitance: 19 units f

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