Datasheet M62481FP Datasheet (Mitsubishi)

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

1

DESCRIPTION

FEATURES

•Built-in self-reset circuit

System Block Diagram

Pick-Up

HF PRE AMP

TE PRE AMP

ADJ

TRK Servo

Sled Servo

DSP

DRIVER

FCS Servo

HF signal

56P6S

(10.0mmX10.0mmX2.8mm)

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.

•8 times speed

•3 beam pick-up servo system

•Adaptable to hologram pick-up system with
additional input.

•Built-in automatic laser power control circuit

•Built-in mirror detector

•Built-in adjustment circuit for automatic tuning

•Built-in serial data command interface to reduce
micro-controller overload

APPLICATION

CD PLAYER,CD-ROM PLAYER

RECOMMENDED OPERATION CONDITIONS

•Supply Voltage Range •••••• 4.5 -> 5.5V

•Rated Supply Voltage ••••••5.0V

M62481FP

PD

FE PRE AMP

LD

ALPC

TRK
Actuator

Sled
Motor

FCS
Actuator

Spindle
Motor

M5674X

ADJ

0.65mm pitch 56pin QFP

MCU I/F

MCU

Search

M6582X

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ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

PIN CONFIGURATION

(top view)

2

APC IN

APC OUT

FE2 + IN

FS - IN

FE1 - IN

CFSR

FG2

TE2 + IN

TG1

TG3

TE1

Vcc

TE2 - IN

TE2 OUT

M62481FP

4344454647484950515253545556

OST
TE1 - IN

SHOCK IN
RIREF

TG2

TS - IN
TS OUT

1
2

3
4

5
6
7

8
9

10
11

12
13

14

42
41
40

39
38

37
36

35
34

33
32

31
30
29

HFC

OSF

FE1

FG1
FE2 - IN

FE2 OUT

FS OUT

15 16 17 18 19 20 21 22 23 24 25 26 27 28

MITSUBISHI

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

BLOCK DIAGRAM

3

HFC

OSF

FE1

FS OUT

FG1

FE2 OUT

FE2 - IN

TE2 + IN

TG1

TG3

TE1

Vcc

TE2 - IN

TE2 OUT

47k

47k

FS ON

47k

56k

TE1

TE2

offset

gain1

Track balance1

Track balance2

JF

JR

TS

FS

TS OFF

F-E

FBAL

APC

A-BHFFG2

SF

SR SSTrack

gain1

400k

30k

30k

FE2

FS OFF

TC

Shock

SS BUF

SS OFF

400k

60k

60k

30k

10k

10k

5.0k

30k

30k

balance1

balance2

2k

220k

22k

22k2k220k

10k

Focus gain2

Track

gain2

18k

18k291k

1k

4344454647484950515253545556

OST
TE1 - IN

SHOCK IN
RIREF

TG2

TS - IN
TS OUT

1
2

3
4

5
6
7

8
9

10
11
12

13
14

TS
HOLD

FZC OFF

TG1

TG2

TG3

42
41

40
39
38

37

APC IN
APC OUT

CFSR

FE1 - IN

MR/HFOK

Focus

TS
ON

FE1

Focus

36

Focus

Focus

FS HOLD

35

FE2 + IN

34

FG1

33
32

VREF

Reset

31
30

FG2

FS - IN

15 16 17 18 19 20 21 22 23 24 25 26 27 28

Unit Resistance :Ω

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ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

PIN DESCRIPTION

PIN No.

8

346

7

SHOCK IN

1

4

18k

6k322k

10k

2.2k

2

Symbol

OST

TE1 -IN

TE1

TE2 +IN

Equivalent circuit

1

2

4

220k

Function

Voltage output for Track offset
adjustment

TE1 Amp negative input

TE1 Amp output

TE2 Amp positive input

5

TG1

TE2 -IN

TE2 OUT

5

6

8

1k
1k

7

MITSUBISHI

TG1 SW

TE2 Amp positive input

TE2 Amp output

Shock detector input

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

9101112131415

PIN No.

5

9

10k

10k

10k

Symbol

RIREF

Vcc

TG2

TG3

Equivalent circuit Function

Current reference

Power supply

TG2 SW

TG3 SW

11

12

10

1k
1k

1k

10k

1k

16

TS - IN

TS OUT

SS + IN

SS - IN

13

15

14

16

MITSUBISHI

TS Amp negative input

TS Amp output

SS Amp positive input

SS Amp negative input

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

17181920212223

21

adjustment)

24

17

6

20k

18

220k

20k

20

470

68k

PIN No.

Symbol

SS OUT

DETFIL

VREF

CLPF

Equivalent circuit

47p

19

Function

SS Amp output

Filter for Phase Detector
(Gain adjustment)

Vcc/2 Amp output

LPF Capacitor for adjutment

3.0k

24

GND

DOUT1

MLA/DIS

JP1/SG

23

10k

4.7k

4.7k

22

MITSUBISHI

Ground

Servo status Data output1

MCU Latch Signal input
(discharge control for LPF Capacitor of

Single Track Jump Control
(reference signal input for Gain
adjustment)

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

25262728293031

PIN No.

25

26

29

31

32

10k

7

20k

20k

27

10k

Symbol

MCK

MSD

DOUT2

HFD

Equivalent circuit

4.7k

4.7k

28

Function

MCU clock signal input

MCU serial Data input

Servo status Data output2

HF Detect output

32

FS OUT

FS - IN

FG2

FE2 OUT

30

1k

10k

1k

MITSUBISHI

FS Amp output

FS Amp negative input

FG2 SW

FE2 Amp output

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

33343536373839

PIN No.

38

8

100

34

220k3318k

22k

6k

36

Symbol

FE2 - IN

FG1

FE2 + IN

FE1

Equivalent circuit

35

1k
1k

Function

FE2 Amp negative input

FG1 SW

10k

FE2 Amp positive input

FE1 Amp output

40

37

FE1 - IN FE1 Amp negative input

Voltage output for Focus offset

OSF

CFSR

APC OUT

39

40

adjustment

Voltage for Focus Search

APC(Automatic Laser Power
Control)output

MITSUBISHI

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

41424344454647

PIN No.

45

9

44

5.1k42100k

Symbol

APC IN

HFC

MRC

COMP IN

Equivalent circuit Function

41

APC(Automatic Laser Power
Control)input

HF Capacitor for HF Detector

4.7k

Hold Capacitor for Mirror Detector

43

Comp Amp input

48

FBO

FBI

MR IN

HF OUT

46

47

Focus Balance Amp output

Focus Balance Amp input

Input of Mirror detector

51k

48

HF Amp output

51k

MITSUBISHI

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

49505152535455

54

53

52

55

56

49

PIN No.

10

10k

60k

30k

400k

Symbol

HF - IN

GND

AB

Equivalent circuit

5k

50

10k

51

Function

HF Amp negative input

Ground

A,B output

C IN HF input C for Auxiliary

56

B IN

A IN

E IN

F IN

Focus Servo input B

Focus Servo input A

60k

Track Servo input E

Track Servo input F

400k

MITSUBISHI

ELECTRIC

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

1000

600

20000255075100

360

85

Vcc -> 0.7

Vcc->0.3

11

Pin 23 ,Pin 24 ,

ABUSOLUTE MAXIMAUM RATING

Symbol Parameter

Vcc

VI

Pd

KO

Topr
Tstg

Maximum Supply Voltage

Input Voltage

Power Dissipation

Thermal Derating

Operating Temparature

Storage Temparature

THERMAL DERATING
(MAXIMUM RATING)

900

800

Conditions

Ta = 25deg.

Ta=25deg.,unless otherwise noted

Ratings

Unit

7

-0.3 -> Vcc+0.3
900

9.0

mW

mW/deg.

-20 -> +85

-40 -> +125

V
V

deg.

deg.

400

AMBIENT TEMPERATURE Ta (deg.)

RECOMMENDED OPERATING CONDITION

Symbol Parameter

Vcc
VIH

fck

Supply Voltage

High-level Input Voltage

Low-level Input VoltageVIL

Clock frequency

Pin 25 ,Pin 26

Conditions

125

Limits

Min

4.5 V

Typ Max

5.0

5.5

Unit

Vcc

0

500

kHz

V
V

MITSUBISHI

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ELECTRICAL CHARACTERISTICS(1/6)

(Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted)

No

1

Symbol

Icc

Block

Parameter

Circuit current

Test Conditions

Quiescent

M62481FP

Measurement
circuit

Limit

Min Typ Max

5530

70

Unit

mA

2

3-1
3-2

4-1
4-2

5

6

7

8

9

10-1

10-2

VREF

GVHFAB

GVHFC

fHF1
fHF2 HF Cut off frequency2

VHHF

VLHF

IOHHF

IOLHF

VOSHF

RMN-ON

RMN-OFF

IV
+

HF

Reference voltage

Gain for Input A/B

Gain for Input C

HF Cut off frequency1

High output voltage

Low output voltage

Low output current

Offset voltage

Ratio(nomal)

Ratio(nomal)

f=500kHz

f=500kHz
(normal) 3dB down refer to 500kHz

(Invert) 3dB down refer to 500kHz

INPUT Vin= 4.0V

INPUT Vin= 1.0V

VOH=4.0V

VOL=1.0V

refer to VREF

"Normal"Mode: R0;D5=0

"Normal"Mode: R0;D5=0

2.3 2.5 2.7

3.1

(1)

9.1

(2)

(1)

12.0 16.0

(3)

12.0 16.0

3.5 4.0

(4)-1

(4)-1

(4)-2

(4)-2

(5)

(6)-1

0.31 0.41 0.51

(6)-1

0.37 0.47 0.57

5.1 7.1

11.1 13.1

1.0 1.5

-2

-1

21

0

50-50

V

dB

dB

MHz
MHz

V

V

mAHigh output current

mA

mV

10-3

RMN-HYS

11-1

RMJ-ON

11-2

RMJ-OFF

11-3

RMJ-HYS

12-1
12-2 fMRH Cut off frequency (High)

13

14
15
16
17
18
19
20
21

fMRL

VTHFOK
VHHFD

VHDOUT

VLHFD

VLDOUT

IOHHFD

IOHDOUT
IOLHFD

IOLDOUT

MR

HFOK

HFD/

DOUT1,2

Hysteresis(normal)

Ratio(jump)

Ratio(jump)

Hysteresis(jump)

Cut off frequency (Low)

Threshold refer to VREF

High output voltage

Low output voltage

High output current

Low output current

"Normal"Mode: R0;D5=0

"Brake"Mode : R0;D5=1

"Brake"Mode : R0;D5=1

"Brake"Mode : R0;D5=1

"Normal"Mode: R0;D5=0 , R1;D13=1
"Normal"Mode: R0;D5=0 , R1;D13=0 60 100

VOH=4.0V

VOL=1.0V

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12

(6)-1

0.03 0.06 0.12

(6)-1

0.42 0.52 0.62

(6)-1

0.48 0.58 0.68

0.04 0.08 0.16

(6)-1
(6)-2

30 50

(6)-2

(7)

- 0.26 - 0.12

(7)

3.5

(7)

(8)

(8)

- 0.19

4.0

-100

1000500

1.51.0

-70

kHz

V

V

V

uA

uA

D-62481-87I

note(1/6)

~

~

•IV+HF BLOCK

~

~

~

(1)GVHFAB,fHF1;

Input signal ViA (ViB)

ViA(ViB)

Vref

0.5Vp-p

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Vref+0.25V

ViA ViB

54 53 52 51

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

Vref+0.25V

18k

60k60k

49 48

Vo

(2)GVHFC;

Input signal ViC

ViC

Vref

0.5Vp-p

t

60k60k 30k

10k

10k

Vref+0.25V

54 53 52

5k

ViC

30k

51

t

60k60k 30k

10k

10k

5k

HF

+

18k

49 48

HF

+

Vo

(3)fHF2;

ViA(ViB)

Vref

VREF=1/2Vcc

Input signal ViA (ViB)

0.5Vp-p

Vo

Vref-0.25VVref-0.25V

ViA ViB

60k60k

t

54 53 52

60k60k

10k

10k

10k

51

30k

5k

10k

49 48

HF

+

MITSUBISHI

ELECTRIC

( / 88 )

13

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(4)-1VHHF,VLHF;

INPUT ViA(ViB)

VHHF:ViA(ViB)=4.0V
VLHF:ViA(ViB)=1.0V

(4)-2VHHF,VLHF;

INPUT ViA(ViB)

IOHHF:VO=4.0V
IOLHF:VO=1.0V

ViA ViB

60k60k

54 53 52 51

60k60k 30k

10K

10K

ViA ViB

60k60k

54 53 52 51

60k60k 30k

5K

18k

49 48

HF

+

18k

49 48

HF

+

Vo

4.7k

Vo

(5)VOSHF;

VREF=1/2Vcc

Vref

10K

10K

60k60k

54 53 52 51

60k60k 30k

10k

10k

19

+

47k

47k

5K

Vo

18k

49 48

HF

+

5k

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ELECTRIC

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14

D-62481-87I

•MR BLOCK
(6)-1)RMN,RMJ,fMR (High,Low);

RMN : Mirror detector sensitivity : in normal mode

(R0;D5(BRAKE)=0)

Test : UB is decrease starting at UB=UA.
When MR pulses are detected at the HFD
pin,RMN is calculated as follow:

RMN=

UB

UA

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

~

Vi

18k

0.001u

18k

0.068u

0.001u

RMJ : in brake mode

(R0;D5(BRAKE)=1)

Test : same explanation as above

-2)fMR (High,Low);

VREF=1/2Vcc

V 47

Vref

/BW WIDE=1;
/BW WIDE=0;

49 48

+

UA

47 43 42

MR/HFOK

UB

fc=500kHz AM fmod=1kHz
fc=8.0MHz AM fmod=1kHz

A= 0.5V

HFOK

MR

HFD MODE

t

28

Vo

fMR(Low) : cut off frequency of mirror detector. (R1;D13(BW WIDE)=1)

UB

Test condition : •

UA

=0.3 ->

UB=0.15V

•(R0;D5(BRAKE)=0)

Test : fmod is increased. The HFO output is monitored.
When the MR detector stops operation, the cut off frequency is found.

fMR(Low) = fmod

fMR(High) : cut off frequency of mirror detector.(R1;D13(BW WIDE)=0)

(R0;D5(BRAKE)=0)

Test : same explanation as above

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ELECTRIC

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15

D-62481-87I

(7)VTHHFOK,VHHFD,VLHFD;

VTHHFOK:

When input voltage Vin increase
starting from Vref,
Vo change form "L" to "H" and pin
48 measure voltage( refer to Vref).

Vin

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

18k

18k

0.068u

0.001u

(8)IOHHFD,IOLHFD;

VO =4.0V : IOHHFD
VO =1.0V : IOLHFD

Vin

49 48

+

VREF=1/2Vcc

18k

18k

47 43 42

MR/HFOK

HFOK

MR

HFD MODE

(RL=Nothing)

28

Vo

VHHFD

VLHFD

49 48

+

VREF=1/2Vcc

0.068u

47 43 42

MR/HFOK

MITSUBISHI

ELECTRIC

( / 88 )

16

HFOK

MR

0.001u

HFD MODE

28

VREF=1/2Vcc

Vo

IOH (IOL)

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

(13)-1

(13)-1

(13)-2

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ELECTRICAL CHARACTERISTICS(2/6)

(Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted)
Symbol

Block

Parameter Test Conditions

M62481FP

Measurement
circuit

Limit

Min Typ Max

Unit

GVFE Gain

22
23

VHFE2

VLFE2 V

24
25

IOHFE2

26

IOLFE2

VOSFE2

27

IV

+

FE

28

VOSFE1adj Offset voltage

29
30

BALFE

GVFS Gain

31
32

VHFS

VLFS

33

High output voltage

Low output voltage

High output current

Low output current

Offset voltage

Offset voltageVOSFE1

Focus balance

Low output voltage

Gain value DCBA=1000(0dB)

INPUT Vin= 4.0V

INPUT Vin= 1.0V

INPUT Vo= 4.0V

INPUT Vo= 1.0V

refer to VREF,

refer to VREF,

R2;DCBA=1000(0%)

INPUT Vin= 1.0V

INPUT Vin= 4.5V

Focus gain : 0dB

Focus balance : 0%

Focus gain : 0dB
Focus balance : 0%

Focus gain : -11 -> 9.8dB

Focus balance : 0%

(10)

(11)

3.5 4.0

(11)

(12)

(12)

1

(10)

-2 0 +2

(14)

(15)

3.5 4.0

(15)

14.012.0 16.0

1.0 1.5

-2 -1

2

0

0

1.0 1.5

dB

V

mA

mA

40-40

mV

mV0refer to VREF, 15-15

mV

15-15

%

dB0-2.0 2.0

VHigh output voltage

V

+

­+

-

FS

Focus
Search

FZC

FG

High output current

Low output currentIOLFS

Offset voltage

Focus search + voltage

Focus search - voltage

Focus zero cross1 + voltage

(Shock detector)

Focus zero cross1 - voltage

(Shock detector)

Focus zero cross2 + voltage

Focus zero cross2 - voltage

Attenuation FG1,2 ON

Attenuation FG1,2 OFF

INPUT V0= 4.0V

INPUT V0= 1.0V

refer to VREF

refer to VREF

refer to VREF

"Shock or FZC"mode refer to VREF

"Shock or FZC"mode refer to VREF

refer to VREF
refer to VREF

"FG1 SW=FG2 SW=ON", RL=2kohm

"FG1 SW=FG2 SW=OFF"

MITSUBISHI

ELECTRIC

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17

( max )

( min )

IOHFS -6.0

34
35

36

VOSFS

37

VFSR +

VFSR -

38
39

VFZC1

40

VFZC1
VFZC2

41
42

VFZC2
AFG1§2ON

43

AFG1§2OFF

44

(16)

(16)

(17)

(18)

(18)

(19)-1

(19)-1

(19)-2

(19)-2

(20)

(20)

-4.0

4.0

6.0

-25 25

1.45

0.07 0.12 0.17

0.5 0.7 0.9

15

0

1.67

-1.59

0 2

-1.40

-0.07-0.12-0.17

-0.5-0.7-0.9

20

mA

mA

mV

V

V

V

V

V

V

dB

dB

D-62481-87I

(10)GVFE,BALFE;

•IV + FE BLOCK

0

note(2/6)

INPUT ViA(ViB)

ViA

54 53

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

~ ~

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

1/2Vcc1/2Vcc

ViB

60k60k

GVFE:input A only.Output voltage is at Pin 32

BALFE=GVFE(A•B) / GVFEB

GVFE(A•B);Equal phase signals input to
pin 54 and 53 .

ViA(ViB)

Vref

(11)VHFE2,VLFE2;

INPUT ViA(ViB)

Vi=50mVrms

t

Focus
balance1

60k

ViB

54 53

60k

30k30k

A-B

Focus
gain1

60k

FS OFF

Focus
balance2

FE1

1k

22k

2k

220k

FS ON

FE2

18k

FS HOLD

Focus
gain2

37

36

35

33

32

VREF=1/2Vcc

27k

47k

240k

Vo

VHFE2:Vi=4.0V
VLFE2:Vi=1.0V

Focus
balance1

60k60k

Focus
balance2

30k30k

A-B

Focus
gain1

FS OFF

MITSUBISHI

ELECTRIC

( / 88 )

18

1k

22k

2k

220k

FS ON

FE2

18k

FS HOLD

Focus
gain2

37

27kFE1

36

35

47k

33

240k

32

Vo

4.7k

D-62481-87I

(12)IOHFE2,IOLFE2;

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

INPUT ViA(ViB)

IOHFE2:Vo=4.0V
IOLFE2:Vo=1.0V

Focus
balance1

ViB

54 53

60k

30k30k

A-B

Focus
gain1

60k60k

FS OFF

Focus
balance2

1k

22k

2k

220k

FS ON

FE2

18k

FS HOLD

Focus
gain2

37

36

35

33

32

27kFE1

47k

240k

Vo

IOH (IOL)

(13)-1VOSFE1,VOSFE2

19

Focus
balance1

+

VREF

54 53

60k

47k

47k

60k60k

30k30k

A-B

Focus
gain1

60k

Focus
balance2

FS OFF

FE1

1k

22k

2k

220k

FS ON

FE2

18k

FS HOLD

Focus
gain2

VREF=1/2Vcc

37

36

35

33

32

27k

VOSFE1

47k

240k

VOSFE2

MITSUBISHI

ELECTRIC

( / 88 )

19

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

(13)-2 VOSFE1adj

1

. Focus gain ( R3;D0->3=1 ( 9.8dB ) Measurement circuit (13)-1

VosFE1: within +/- 50mV

2

. Focus gain ( R3;D0->3=1 ( 9.8dB ) Measurement circuit (13)-2

Input pin54 add Va( Offet voltage )
VosFE1adj is within +/- 15mV by adjusting Va.

3

. Focus gain ( -11->9.8dB ) Measurement circuit (13)-2

VosFE1adj( pin35) : mesurement

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

100k

60k60k

54 53

60k60k

Focus
balance1

30k30k

Focus
balance2

19

+

VREF

47k

47k

A-B

Focus
gain1

FS OFF

FE1

1k

22k

2k

FS ON

18k

220k

FE2

1.2M

Focus
offset

FS HOLD

Focus
gain2

220k

38

37

36

35

33

32

27k

VOSFE1adj

47k

240k

VOSFE2

MITSUBISHI

ELECTRIC

( / 88 )

20

VREF=1/2Vcc

D-62481-87I

•FS BLOCK

0

(14)GVFS:input pin 30

GVFS=Vo / Vi

Vi

Vi=10mVrms

Vref

(15)VHFS,VLFS;

INPUT Vi

VHFS:Vi=1.0V
VLFS:Vi=4.0V

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

;

30

27k

Vo

47k

47k

FS

+

VREF

29

19

t

30

27k

Vo

47k

47k

FS

+

29

19

VREF

27k

1.0k

27k

1.0k

Vi

~

Vi

(16)IOHFS,VILFS;

INPUT Vi

IOHFS:Vo=4.0V
IOLFS:Vo=1.0V

(17)VOSFS;

(18)VFSR + ,VFSR - ;

VFSR + (R1:D8=0,D9->D12=1)
VFSR - (R1:D8=1,D9->D12=1)

47k

47k

47k

47k

Focus
Search

FS

+

FS

+

VREF

VREF

30

29

19

30

29

19

39

CFSR

Vi

27k

27k

Vo

IOH (IOL)

27k

27k

1k

Vo

Vo

VREF=1/2Vcc

MITSUBISHI

ELECTRIC

21

( / 88 )

D-62481-87I

(19).FZC BLOCK

Buffer

Buffer

Focus

balance2

Focus

balance1

Focus

gain3

(offset)

Focus

gain2

1k

FZC OFF

FZC OFF

HFOK

FE1-INAC

ViA

HF-IN

HFOUT

FE1

MRIN

HFC

DOUT1

SHOCK IN

FE2+IN

B

100k

47p

220k

FS ON

FS HOLD

100k

ON/OFF

ViA

HF

60k

30k

HF

ON/OFF

53

54

52

60k

60k

30k

47k

12p 36p

BW WIDE

47k

12p 36p

BW WIDE

5k

49 48 47

18k

30k

30k

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

27k

37 36

Focus
gain1

A-B

(Vth=+/-0.7V)

HFOK
Detector

42

0.01u

0.001u

FE1

18k

FZC/Shock
Logic

K200G800
(Vth=+/-0.12V)

Dout
Logic

35

8

22

VREF=1/2Vcc

Measure

Vpin35

Vpin8

DOUT1

(19)-1.VFZC1 + ,VFZC1 - (K200);

1.Set R0,D7 (FZC OFF)=1.

2.Set pin 24 (JP1/SG) to "H".

3.Apply HF signal to pin 52 (C input).

4.R0,D11=R0,D10 (Dout Mode)=0.

5.Apply Vref to pin 8 (Shock in).

6.Increase voltage at pin 8 and monitor the DOUT1 pin.

7.When the voltage at the DOUT1 pin changes,the threshold is found.

8.Threshold voltage can be calculated as follows;
VFZC1 + =Vpin8 - Vref

9.Apply Vref to pin 8 (Shock in).

10.Decrease voltage at pin 8 and monitor the DOUT1 pin.

11.When the voltage at the DOUT1 pin changes,the threshold is found.

12.Threshold voltage can be calculated as follows;
VFZC1 - =Vpin8 - Vref

MITSUBISHI

ELECTRIC

22

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

47k

2k

VoViVREF=1/2Vcc

FG2

23

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(19)-2.VFZC2 + ,VFZC2 - (G800);

1.Set R0,D7 (FZC OFF)=1.

2.Apply a voltage to pin8 (shock in) which is much above the comparetors threshold.

3.Set pin 24 (JP1/SG) to "H"

4.R0,D11=R0,D10 (Dout Mode)=0.

5.Apply Vref and no HF signal to pin 52 (C input).

6.Apply HF signal to pin 52 (C input).

7.Adjust ViA to Vref (=input to pin 53 (A input) via 60kohm resister).

8.Increase voltage at pin 53 and monitor the DOUT1 pin.

9.When the voltage at the DOUT1 pin changes,the threshold is found.

10.Threshold voltage can be monitored at pin35 (FE2+IN) and calculated as follows;
VFZC2 + =Vpin34 - Vref

11.Apply Vref and no HF signal to pin 52 (C input).

12.Apply HF signal to pin 52 (C input).

13.Adjust ViA to Vref (=input to pin 54 (A input) via 60kohm resister).

14.Decrease voltage at pin 54 and monitor the DOUT1 pin.

15.When the voltage at the DOUT1 pin changes,the threshold is found.

16.Threshold voltage can be monitored at pin35 (FE2+IN) and calculated as follows;
VFZC2 - =Vpin35 - Vref

(20)AFG1,2ON,AFG1,2OFF;

AFG ON (R0;D8=0,R3;D8=1,R3;D9=0)
AFG OFF(R0;D8=0,R3;D8=0,R3;D9=0)

FG1

Vi

Vi=0.5mVrms

Vref

47k

0

t

+

VREF

Vi

2k

34

31

Vo

19

~

~

MITSUBISHI

ELECTRIC

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

TE

(24)-1

(24)-1

(24)-2

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ELECTRICAL CHARACTERISTICS(3/6)

(Ta=25deg,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted)

45

Symbol

GVTE

Block

Parameter

Gain

gain value : DCBA=1000(0dB)

Test Conditions

M62481FP

Measurement
circuit

(21)

Limit

Min Typ Max

14.0

12.0

16.0

Unit

dB

46

47

48

49
50

51

52

53

54

55

56

57

VHTE2

VLTE2

IOHTE2

IOLTE2

VOSTE2

VOSTE1

VOSTE1adj

BALTE

GVTS

VHTS

VLTS

IOHTS

IV

+

TS

High output voltage

Low output voltage

High output current

Low output current

Offset voltage

Offset voltage

Offset voltage

Track balance

Gain

High output voltage

Low output voltage

High output current

INPUT Vin= 4.0V

INPUT Vin= 1.0V

INPUT Vo= 4.0V

INPUT Vo= 1.0V

refer to VREF

refer to VREF

INPUT Vin= 1.0V

INPUT Vin= 4.5V

INPUT Vo= 4.0V

Track gain : 0dB

Track balance : 0%

Track gain : 0dB
Track balance : 0%

Track gain : -11 -> 9.8dB
Track balance : 0%

(22)

3.5

(22)

(23)

(23)

1.0

-40 +40

-15

-15

(21)

-3.0

(25)

-2.0

(26)

3.5

(26)

(27)

4.0

1.0

-2.0

2.0

0

0

0

0

0 2.0

4.0

1.0

-6.0

1.5

-1.0

+15

+15refer to VREF

+3.0

1.5

-4.0

V

V

mA

mA

mV

mV

mV

%

dB

V

V

mA

58

IOLTS

59

60

61

62

63

VOSTS

VJF

VJR

VTC +

VTC -

TC

Low output current

Offset voltage

Jump voltage(forward)

Jump voltage(reverse)

Track cross + voltage

Track cross - voltage

INPUT Vo= 1.0V

refer to VREF

"JF"Mode,

"JR"Mode,

refer to VREF

refer to VREF

MITSUBISHI

ELECTRIC

24

( / 88 )

refer to VREF

refer to VREF

(27)

(28)

(28)

(28)

(29)

(29)

4.0

-25

+0.12

-0.18

+50.0

-75.0

6.0

25

0

+0.15 +0.18

-0.15

-0.12

+62.5 +75.0

-62.5

-50.0

mA

mV

V

V

mV

mV

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

note(3/6)

Vi=50mVrms

0

IV+TE BLOCK

27k

47k

400k

1/2Vcc

400k

30k

18k2k220k

Vo

F-E

47k

TE2

47k

400k

30k

18k1k220k

F-E

27k

400k

47k

25

2k

~

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(21)GVTE,BALTE;

ViE(ViF)

Vref

BALTE=GVTE(E•F) / GVTE (%)

(GVTE(E•F) ; Equal Phase signals

input to pin 56 and 55 )

1/2Vcc

400k

47k

~

Track
gain1

TS OFF

Track
balance2

TE1

1k

22k

TS ON

TS HOLD

Track
gain2

2

3

4

6

240k

7

ViF ViE

56 55

400k

t

Track
balance1

19

30k

VREF

+

(21)VHTE2,VLTE2;

INPUT VIN
VHTE2 : VIN=4.0V
VLTE2 : VIN=1.0V

VREF=1/2Vcc

19

Track
balance2

VREF

56 55

400k

30k

+

47k

VIN

Track
gain1

TS OFF

Track
balance1

TE1

22k

TS ON

TE2

TS HOLD

Track
gain2

2

3

4

6

7

4.7k

4.7k

240k

Vo

MITSUBISHI

ELECTRIC

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

47k

400k

30k

18k

22k

VOSTE2

240k

400k

4.7k

47k

400k

30k

18k2k220k

F-E

240k

400k

47k

VOSTE1

26

1k2k1k

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(23)IOHTE2,IOLTE2;

INPUT VIN
IOHTE2 : VO=4.0V
IOLTE2 : VO=1.0V

19

Track
balance2

VREF

56 55

400k

30k

+

47k

VIN

Track
gain1

TS OFF

Track
balance1

22k

TS ON

TE2

TS HOLD

Track
gain2

2

3

4

6

7

IOH (IOL)

27kTE1

Vo

(24)-1VOSTE2,VOSTE1;

19

Track
balance2

VREF

56 55

400k

30k

+

F-E

47k

400k

Track
gain1

TS OFF

Track
balance1

TE1

220k

TS ON

TE2

TS HOLD

Track
gain2

VREF=1/2Vcc

2

27k

3

4

47k

6

7

MITSUBISHI

ELECTRIC

( / 88 )

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

VosTE1: within +/- 50mV

47k

400k

30k

18k2k220k

27k

400k

47k

27

1k

(24)-2 VOSTE1adj

1

. Track gain ( R3;D4->7=1 ( 9.8dB ) Measurement circuit (24)-1

2

. Track gain ( R3;D4->7=1 ( 9.8dB ) Measurement circuit (24 )-2
Input pin55 add Va( Offet voltage )

VosTE1adj is within +/- 15mV by adjusting Va.

3

. Track gain ( -11->9.8dB ) Measurement circuit (24)-2
VosTE1adj( pin4 ) : mesurement

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

19

Track
balance2

VREF

56 55

400k

30k

F-E

+

47k

400k

Track
gain1

TS OFF

Track
balance1

TE1

22k

TS ON

TE2

1.2M

Track
offset

TS HOLD

Track
gain2

100k

220k

1

2

3

4

6

240k

7

VOSTE2

VREF=1/2Vcc

MITSUBISHI

ELECTRIC

( / 88 )

D-62481-87I

Vi=0.5mVrms

0

47k

19

14

6.8k

1k

(25)GVTS;

TS BLOCK

TS+47k

19

14

6.8k1kVo

47k

19

14

6.8k

JFJRJFJRJF

28

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

GVTS:input Pin 13

Vi

Vref

(26)VHTS,VLTS;

INPUT VIN
VHTS : VIN=1.0V
VLTS : VIN=4.0V

+

VREF

+

13

6.8k
Vo

47k

t

~

Vi

TS VREF

+

13

47k

(27)IOHTS,IOLTS;

INPUT VIN
IOHTS : VO=4.0V
IOLTS : VO=1.0V

JR

MITSUBISHI

ELECTRIC

( / 88 )

VIN

VIN

6.8k

TS VREF

+

13

IOH (IOL)

6.8k

+

47k

Vo

VREF=1/2Vcc

D-62481-87I

balance2

Track

gain2

(28)VOSTS,VJF,VJR;

Track

gain1

100k

47p

100k

TC DET LPF SW

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

VJF (JP1/SG="X" R0 ; D13=D3=0, D4=1)
VJR (JP1/SG="X" R0 ; D13=D3=1, D4=0)

(29)VTC + , VTC - ;

R0; D7=0,D11=D10=1

INPUT VIN
OUTPUT DOUT1

JF

JR

VIN

6.8k

6.8k

~

400k

56 55

400k

TS

+

400k

47k

+

VREF

1413

1k

19

Vo

47k

VIN=0.16Vpp(VM=0.4Vpp)

(mV)

VM

+200

Vref

-200

Test : When Dout1 is detected "H" and "L"
,the voltage of pin 4 measure.

f=1kHz

Track
balance1

MITSUBISHI

ELECTRIC

29

( / 88 )

F-E

Track Cross
Detector

30k30k

Track

2

TE1

18k

3

2k

1k

220k

Dout
Logic

4

22

27k

VM

Vo

DOUT1( TC HS)

VREF=1/2Vcc

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ELECTRICAL CHARACTERISTICS(4/6)

(Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted)

Symbol

Block

Parameter

Test Conditions

M62481FP

Measurement
circuit

Limit

Min Typ Max

Unit

64

65

66

67

68

69

70

71

72
73

74

ATG1,2ON

ATG1,2OFF

ATG3ON

ATG2OFF

GVSS

ATTSS

VHSS

VLSS

IOHSS

IOLSS

VOSSSon

TG

SS

Attenuation TG1,2 ON

Attenuation TG1,2 OFF

Attenuation TG3 ON

Attenuation TG3 OFF

Gain

Attenuation at SS OFF

High output voltage

Low output voltage

High output current

Low output current

Offset voltage SS on

TG1 SW=TG 2 SW="ON" RL=2kohm

TG1 SW=TG2 SW="OFF"

TG3 SW="ON" RL=2kohm

TG3 SW="OFF"

INPUT Vin= 4.0V

INPUT Vin= 1.0V

INPUT Vo= 4.0V

INPUT Vo= 1.0V

"SS on"Mode,

refer to VREF

(30)

15 20

(30)

0

(30)

15 20

(30)

0 2

(31)

10 12 14

(31)

40

3.5 4.0

(32)

(32)

(33)

(33)

4.0

(34)

-35

1.0 1.5

-4.0-6.0

6.0

0

35

dB

dB

2

dB

dB

dB

dB

V

V

mA

mA

mV

75
76

77

78

79

80

81

82

83

84

VOSSSoff

VSF

VSR

VRST

GVAP

ATTAP

VHAP

VLAP

IOHAP

IOLAP

RESET

APC

Offset voltage SS off

Slide voltage(forward)

Slide voltage(reverse)

Reset voltage

Gain

APC OFF voltage

High output voltage

Low output voltage

High output current

Low output current

"SS off"Mode,

"SF"Mode,

"SR"Mode,

Input Vi= 170 mV

Input Vi= 240 mV

Input Vi= 100 mV

INPUT Vo= 4.0V

INPUT Vo= 1.0V

MITSUBISHI

30

( / 88 )

refer to VREF

refer to VREF

ELECTRIC

refer to VREF

-25

(34)

(34)

+0.76

(34)

-1.14 -0.95 -0.76

2.1 2.3 2.5

(35)

51

(36)

(36)

3.5

(36)

(37)

(37)

0.2 1.0

0

25

+0.95 +1.14

54

4.84.0

4.0

57

1.51.0

-0.2-1.0

mV

V

V

V

dB

V

V

V

mA

mA

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

0

0

•TG BLOCK

•SS BLOCK

note(4/6)

(30)ATG ON , ATG OFF;
ATG1,2 ON (R0;D8=1,R3;D8=1,R3;D9=0)
OFF (R0;D8=1,R3;D8=0,R3;D9=0)
ATG3 ON (R3;D10=1)
OFF (R3;D10=0)

Vi

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

Vref

ATGON,ATGOFF=20log

(31)GVSS,ATTSS;

INPUT Vi(Pin 15 )

Vi

Vref

V 5

( V 11 ,V 12 )

Vi

(R1=D0=D1=1)

Vi=0.5Vrms

t

VoTG1

Vi=50mVrms

t

TG1 TG2 TG3

VoTG2

2k

~

Vi Vi Vi

SS OFF

10k

SS BUF

10k

+

22k

VoTG3

2k

~

SF

SR

Vo

47k

+

VREF

12115

191615 17

~

2k

VREF

19

47k

+

47k

47k

ATTSS=

GVSS(SS OFF=OFF)

GVSS(SS OFF=ON)

Vi

MITSUBISHI

ELECTRIC

31

( / 88 )

~

6.8k

VREF=1/2Vcc

1k

D-62481-87I

(32)VHSS,VLSS;

(R1=D0=D1=1)

INPUT VIN
VHSS : VIN=4.0V
VLSS : VIN=1.0V

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

SS OFF

10k

10k

VIN

6.8k

SS

+

SS BUF

22k

SF

SR

Vo

1k

191615 17

VREF

47k

+

47k

(33)IOHSS,IOLSS;

(R1=D0=D1=1)

INPUT VIN
IOHSS : VO=4.0V
IOLSS : VO=1.0V

(34)VOSSS,VSF,VSR;

VOSSS1 (JP1/SG=L,R0;D0=0,D1=0,D2=1)
VOSSS2 (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)

10k

VIN

10k

SS OFF

10k

15

SS OFF

10k

SS

+

SS BUF

22k

6.8k

SS

+

SS BUF

22k

6.8k

SF

SR

17

IOH (IOL)

SF

SR

Vo

1k

Vo

1916

191615 17

VREF

VREF

47k

+

47k

47k

+

47k

VREF=1/2Vcc

MITSUBISHI

ELECTRIC

32

( / 88 )

D-62481-87I

(35)GVAP;

0

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Input signal Vi

Vi

170mV

Vi=10mVp-p

t

(36)ATTAP,VHAP,VLAP;

APC OFF (R1;D4=0) , APC ON (R1;D4=1)

Input Vin

Vi=10mVPP

Vin

Va=170mV

~

41 40

+

APC

4041

+

Vo

Vo

1k

(37)IOHAP,IOLAP;

APC ON (R1;D4=1)

IOHAP:VO=4.0V
IOHAP:VO=1.0V

MITSUBISHI

ELECTRIC

33

( / 88 )

APC

Vo

Vin

IOHAP(IOHAP)

4041

+

APC

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

(44-1)

(44-2)

(44-2)

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ELECTRICAL CHARACTERISTICS(5/6)

(Ta=25deg.,Vcc=5V,f=1kHz,DCBA=1000,unless otherwise noted)

Symbol

Block

Parameter

Test Conditions

M62481FP

Measurement
circuit

Limit

Min Typ Max

Unit

85

86

87
88

89
90

91
92

GVFE(max)

GVFE(min)

GVTE(max)

GVTE(min)

BALFE(max)

BALFE(min)

BALTE(max)

BALTE(min)

ADJ

max gain(FE)

min gain(FE)

max gain(TE)

min gain(TE)

max balance(FE)

min balance(FE)

max balance(TE)

min balance(TE)

"Focus gain"Mode DCBA=1111

"Focus gain"Mode DCBA=0000 0.0 +3.0 +6.0

"Track gain"Mode DCBA=1111

"Track gain"Mode DCBA=0000

"Focus balance"Mode DCBA=1111

"Focus balance"Mode DCBA=0000

"Track balance"Mode DCBA=1111

"Track balance"Mode DCBA=0000

(10)

+20.0 +23.0 +26.0

(10)

(21)

+20.0 +23.0 +26.0

(21)

0.0 +3.0

(10)

+23.4 +26.4. +29.4

(10)

-34.8 -31.8 -28.8

(21)

+23.4 +26.4 +29.4

(21)

-34.8 -31.8 -28.8

+6.0

dB

dB

dB

dB

%

%

%

%

93
94

95
96

97-1

97-2

97-3

98

99

100

VPhFE +

VPhFE -

VPhTE +

VPhTE -

VBAL

V thFBAL +

V thFBAL -

VBALT +

VBALT -

fHADJ

Phase error + voltage

Phase error - voltage

Phase error + voltage

Phase error - voltage

Focus Balance output
Voltage

FBAL Ajustment
compraretor Threshold+

FBAL Ajustment
compraretor Threshold­Balance error + voltage
(TE)

Balance error - voltage
(TE)

Cut off frequency

"Focus gain" Mode

Phase error(90+30)deg.

"Focus gain" Mode

Phase error(90-30)deg.

"Track gain" Mode

Phase error(90+30)deg.

"Track gain" Mode

Phase error(90-30)deg.

Vin=2.0p-p, Refer to VREF

"Focus balance"Mode ,

"Focus balance"Mode ,

"Track balance"Mode ,Ein=Vref-0.2V

"Track balance"Mode ,Ein=Vref+0.2V

C(Pin 18 )=2200pF

MITSUBISHI

ELECTRIC

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Refer to VREF

Refer to VREF

(42)

3.1 3.3 3.5

(42)

1.5 1.7 1.9

(43)

3.1 3.3 3.5

(43)

1.5

0.4

5

2.8 3.0 3.2

(45)

(45)

1.8 2.0 2.2

(46)

0.7 1.0 1.3

1.7 1.9

0.7

15 25

-15-25

-5

V

V

V

V

Vp0

mV

mV

V

V

kHz

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

note(5/6)

220k

47p

220k

68k

2.5

3.3

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(38)GVFE(max),GVFE(min): refer to GVFE measurement (show to (10))
GVFE(max) ; R3 ; D0->D3=1
GVFE(min) ; R3 ; D0->D3=0

(39)GVTE(max),GVTE(min): refer to GVTE measurement (show to (21))
GVTE(max) ; R3 ; D4->D7=1
GVTE(min) ; R3 ; D4->D7=0

(40)BALFE(max),BALFE(min): refer to BALFE2 measurement (show to (10))
BALFE(max) ; R2 ; D0->D3=1
BALFE(min) ; R2 ; D0->D3=0

(41)BALTE(max),BALTE(min): refer to BALTE2 measurement (show to (21))
BALTE(max) ; R2 ; D4->D7=1
BALTE(min) ; R2 ; D4->D7=0

60k

60k

(42)VPhFE + , VPhFE - ;

Focus gain adjustment mode (show to (78/88))

1KHz

ViB

ViA

60k

53

54

60k

(R3;D3=1,D0->D2=0)
ViA(ViB) signal;
Phase shift signals (90+/-30deg.)

JP1/SG

JP1 input

24

Circuit

refer to JP1/SG at Focus gain mode.

1KHz

30k

A-B

30k

M62481FP

TE1

2

gain adjustment

ADJ GAIN

XOR

1

Charge

CMP

ViA(ViB) signal;
Phase shift signals (90deg.)
refer to JP1/SG at Focus gain mode.

1

2

3

5

Vo

0

VREF=1/2Vcc

ViA(ViB) signal;
Phase shift signals (90+30deg.)
refer to JP1/SG at Focus gain mode.

1

2

3

5

Vo

0

MITSUBISHI

ELECTRIC

35

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1u

3

18

20

1u

Vo

D-62481-87I

(43)VPhTE + , VPhTE -;

Track

balance1

Track

balance2

Track

gain1

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.

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

1KHz

ViE

ViF

400k

55

56

400k

24

400k

400k

F-E

JP1 input
Circuit

30k

TE1

30k

gain
adjustment

(44-1)VBAL

;

Focus balance adjustment mode (show to (74/88))
(R2;D3=1,D0->D2=0)
INPUT Vi (Pin 46 ):

fc=12MHz AM fmod=500Hz
A=1.0V, B=0.8V

V 46

Vref

A

B

1KHz

18 24

Vo

VREF=1/2Vcc

Vi

0.0047u

200k

1u

Vo

1u

46 45

FBAL

t

(44-2)VthFBAL+,-

INPUT pin44( COMP IN)

V 27

Vi

Vref

Vth - Vth +0

V 44

44

Focus balance
adjustment

18 20

1u

Dout
Logic

27

Dout2

V0

MITSUBISHI

ELECTRIC

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36

D-62481-87I

(45)VBALT + , VBALT -;

Track

balance1

Track

balance2

gain1

Track

balance1

Track

balance2

Track

gain1

Track

gain2

Track balance adjustment mode (show to (72/88))
(R2;D7=1,D4->D6=0)
INPUT Vi (Pin 55 ).

VBALT + :Vi=Vref-0.2V
VBALT - :Vi=Vref+0.2V

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Vi

400k

55

56

400k

400k

F-E

30k

30k

1u 1u

Track

TE2

TE1

Track balance
adjustment

18 20

Vo

(46)fHADJ;

Track gain adjustment mode (show to (76/88))

(R3;D7=1,D4->D6=0)

INPUT ViE(ViF)

Vo

GVADJ =

ViE (ViF)

fHADJ ; 3dB down (refer to 500Hz)

ViE

ViF

400k

400k

400k

400k

30k

30k

F-E

TE1

55

56

gain
adjustment

18 20

Vo

2200p

1u

VREF=1/2Vcc

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ELECTRIC

37

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PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

ELECTRICAL CHARACTERISTICS(6/6)

(Ta=25deg.,Vcc=5V,f=1kHz,CBA=100,D=0,unless otherwise noted)

Symbol

Block

Parameter Test Conditions

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

Measurement
circuit

Limit

Min

Typ

Max

Unit

101

102

103

104

105

106

107

108
109

Vthc1+ refer to VREF (CMP OFFSET SW=ON)

Vthc1- refer to VREF (CMP OFFSET SW=ON)

Vthc2+ refer to VREF (CMP OFFSET SW=OFF)

Vthc2- refer to VREF (CMP OFFSET SW=OFF)

fLC

UAO

VCOMPOFUAADJ

CMP

Threshold

Threshold

Hysteris

Threshold

Threshold

Hysteris

Cut off frequency C(Pin 20 )=4.7nF

Output

Comp input offset

refer to VREF (CMP OFFSET SW=ON)

refer to VREF (CMP OFFSET SW=OFF)

refer to VREF

refer to VREF

(47)

(47)

(47)

(47)

(47)

(47)

(48)

(49)

(50)

3 10 17

-17 -10 -3

8 20

5 15 25

-25 -15 -5

15 30 45

0.7 1.0 1.3

-10

-25.0

0 +10

-13.0

32

-4.0

mV

mV

mVVhy1s

mV

mV

mVVhy2s

kHz

mV

mV

MITSUBISHI

ELECTRIC

( / 88 )

38

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

note(6/6)

Vo

GVADJ =

Vo

ViE (ViF)

Track

balance1

Track

balance2

Track

gain1

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(47)Vthc1,2 + , Vthc1,2 - ,Vhy1,2s;

Vthc1+ , Vthc1- ,Vhy1s;CMP OFFSET=ON (Focus offset1 adjustment mode (show to (83/88))

Vthc2+ , Vthc2- ,Vhy2s;CMP OFFSET=OFF (Focus gain adjustment mode (show to (78/88))

M62481FP

V 27, V 22

Vref

V 20

Vth - Vth +0

Vhy1,2s=Vthc1,2 + - Vthc1,2 -

(48)fLC;

Track gain adjustment mode (show to (72/88))

(R3;D7=1,D4->D6=0)

INPUT ViE(ViF)

ViE

ViF

400K

400K

Vo

22

27

DOUT1

Vo

DOUT2

Adjustment

18 20

1u

400K

55

400K

56

F-E

TE1

fHADJ ; 3dB down (refer to 500Hz)

MITSUBISHI

ELECTRIC

( / 88 )

39

gain
adjustment

18 20

4.7n

VREF=1/2Vcc

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(49)UAO

Focus servo hold mode AUT FSON(R1 D5)=0,FS HOLD (R1 D6)=0,FS OFF (R1 D7)=0,
Focus gain adjustment mode FGAIN (R3 D13)=1,
Amplitude of adjustment UA signal RS D0=0,RS D1=0,RS D2=0,

Vi

24

VREF=1/2Vcc

Vi

5V

Vref

(50)VCOMPOF

f=2kHz

JP1/SG
RS D0,D1,D2=0

230k

37

27k

1u

47k

47k

Vo

220k

FS ON

FE2

18k

FS HOLD

Focus
gain2

36

35

33

32

FE1

2k

t

FS OFF

1k

22k

Adjustment.com.

44

V0

Buffer
Amp.

19

220k

VREF

MITSUBISHI

ELECTRIC

( / 88 )

40

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

TEST CIRCUIT

SW

SW

15161718192021222324252627281234567891011121314303132333435363738394041424344454647484950515253545556

MR/HFOK

47k

47k

FS ON

47k

56k

FE1

Reset

VREF

TE1

TE2

Track balance1

Track balance2

JF

JR

TS

FS

TS OFF

F-E

FBAL

APC

A-BHFFG2

SF

SR SSTrack

gain1

400k

30k

30k

FE2

FS OFF

TC

Shock

SS BUF

SS OFF

400k

60k

60k

30k

10k

10k

5.0k

30k

30k

balance2

2k

220k2222k2k220k

10k

Focus gain2

Track

gain2

18k

18k291k

1k

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Track
Offset

1.2M

3M

100n

47k

4.7k

2

12

1

2

3.3k

1

18k

0.033u

0.001u

3.0M

100k

1k

1k

TS
HOLD

FZC OFF

TG1

TG2

TG3

TS
ON

Focus

Focus

Focus

2k

Focus

FS HOLD

FG1

2k

47k

240k

1.2M

100n

Focus
Offset

4.7k

2k

2k

27k

2.2k

22k

TEST CONTROLLER

47u

MITSUBISHI

ELECTRIC

( / 88 )

41

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

APPLICATION CIRCUIT

SW

SW

(1/2Vcc)

181920212223242526272812345678910111213143031323334353637383940414243444546474849505152535455

56

MR/HFOK

47k

47k

FS ON

47k

56k

FE1

Reset

VREF

TE1

TE2

Track balance1

Track balance2

JF

JR

TS

FS

TS OFF

F-E

FBAL

APC

A-BHFFG2

SF

SR SSTrack

gain1

400k

30k

30k

FE2

FS OFF

TC

Shock

SS BUF

SS OFF

400k

60k

60k

30k

10k

10k

5.0k

30k

30k

balance2

2k

220k

22k

22k2k220k

10k

Focus gain2

Track

gain2

18k

18k291k

1k

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Track offset

+

TS
HOLD

FZC OFF

TG1

TG2

TG3

22

10u

1k

560

100k

a

Focus offset

Focus

TS
ON

Focus

Focus

Focus

FS HOLD

FG1

a

T.Act

15 16 17

+

SL.Motor

Bias

MITSUBISHI

ELECTRIC

( / 88 )

42

MCU

F.Act

CD DSP

MLA

Units Resistance :Ohm
Capacitance:F

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•Basic control software

(Note)

This description is based on the typical use of M62481FP.

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Functional Description

of M62481FP

M62481FP

•MCU Interface

•Servo Circuit

MITSUBISHI

ELECTRIC

43

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MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MITSUBISHI

ELECTRIC

( / 88 )

D-62481-87I

•Command Table

SERVO CONTROL COMMAND TABLE

twck

twck

tsuthtd

twl

twck

twck

tsu

th

td

twl

IC Register

IC Register

Register

RS
R0

R1

R2
R3

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D15 D14 D13 D12 D11 D10 D9 D8

X

0 0

0 1

1 0
1 1

X X X X X X X

KICK DIS HFD MODE

BW WIDE

FS4 FS3 FS2

Track offset (3bit)

TGAIN

DOUT MODE

Focus Search

FBAL

Focus offset (3bit)

TG3

TBAL

FS1 FS0

G2 INV

SHOCK EN

HI GAINFGAIN

Register

RS

R0

R1

R2
R3

( RS: Shift resistor, X : not used )

D7 D6 D5

X

FZC OFF

FS OFF

• Command Timing Chart

1).

2).

MSD

MBK

MLA

MSD

MCK

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15

1/fck

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15

D4

X X X X

TS HOLD

Track Balance (4bit) Focus Balance (4bit)

Track gain (4bit) Focus gain (4bit)

BRAKE TS SERVO SS SERVO

AUT FSON

D3 D2 D1 D0

ADJ AMP2 ADJ AMP1 ADJ AMP0

SS PLAY

ADJ FO1LASER ONFS HOLD

ADJ TO1ADJ FO2

ADJ TO2

H (keep)

Data is loaded
into Servo

Data is
not loaded
into Servo

MLA

1/fck

( While the MLA is set to "L", clock pulses to the lacth register must be disabled.)

Symbol

fck

twck

tsu

th
td

twl

Parameter

Clock frequency

Clock width

Set-up time

Hold time

Delay time

Latch width

Conditions

MITSUBISHI

ELECTRIC

44

( / 88 )

Limits

Min Typ Max

2

0.1
2

2
1

125 kHz

4

0.2
4
4

4

500

Unit

u sec

u sec

u sec

u sec
u sec

D-62481-87I

SERVO CONTROL

• LASER ON

•F-1). FZC Shock Circiut

LOGIC

(1). FOCUS

100k

47p

100k

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Laser ON

HFOK

(HFOK And MR
Detector logic)

FE1 LPF
( ADJUST)

MODE

R1; D4

LASER ON

0Laser OFF

1

(Vth=+ 0.7V)

•APC Amp OFF

•APC Amp ON

G800

K200

FUNCTION

FZC SHOCK

FG1

TG1

FG2

TG2

FZC SHOCK
( Dout Logic )

SHOCK IN

8

FZC OFF
(R0;D7)

(Vth=+ 0.12V)

MITSUBISHI

ELECTRIC

( / 88 )

45

Q FZC
( Focus and Hold
Block )

D-62481-87I

F-1-1) FZC Shock Logic

FE1 LPF

700mV
120mV

-120mV

-700mV

HFOK

G800

Q FF1

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

G800

K200

K 200

Q FZC

HFOK

(HFOK And MR
Detector logic)

FF1

FZC OFF
( R0;D7 )

JP1H
( JP1 Input Circiut)

FF2

SHOCK EN
( R0;D8 )

HI GAIN
( R3;D8 )

G2 INV
( R3;D9 )

FG2, TG2

FG1, TG1

FZC SHOCK
( Dout Logic )

FF3

MITSUBISHI

ELECTRIC

46

( / 88 )

Q FZC
(Focus And Hold
Logic)

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MITSUBISHI

ELECTRIC

47

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•F-3). Focus Search Circiut ( R1; D8 -> D12 )

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Pin

39

VCFSR

; 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 )

0
0

FS4
(D12)

0
0

0
0
0

0
0

0
0
0

0
0

0
0
0

0
1

1
1

1
1

1
1

1
1

1
1
1

1
1
1
1

FS3
(D11)

1
1

FS2
(D10)

1
1
1

0 1 11
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

FS1
(D9)

11

11
1

0 1 1
0
0
0 0 01

1
1

1

0

0
0 0 0
0
0
0
1

1
1
1
0
0
0
0
1

1

1

FS0 ( R1;D8) FS1 ( R1;D9) FS2 ( R1;D10)

1

0
0

1
0

0 1
0
1 1
1 0

0 1
0 0

0
1

1
0
0

1
0

0
1

1
0
0

1

FS0
(D8)

1
0111

1
0

0
11

01

0

1
0
1
0
1
01

1
0

1
0
1

0
11

01

1

01

1 1

10k 10k 10k

Pin 39

VCFSR(V)

0.908

1.009

1.111

1.214

1.321

1.424

1.529

1.635

1.754

1.856

1.961

2.067

2.178

2.283

2.391

2.500

2.500

2.611

2.723

2.834

2.946

3.058

3.169

3.280

3.393

3.505

3.616

3.727

3.838

3.949

4.060

4.169

FS3 ( R1;D11)

39

CFSR

VREF =1/2Vcc

1k

FS4 ( R1;D12)

MITSUBISHI

ELECTRIC

48

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MITSUBISHI

ELECTRIC

( / 88 )

49

D-62481-87I

•T-2). BRAKE DETECTOR ( R0; D5=1 )

Jump Brake operation

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MIRROR

("Mirror")

("Track")

MR Detector

INPUT CONDITION

1

0

TRACK CROSS DET

"1"

"0"

TC Detector

62.5mV-62.5mV

OUTPUT

Brake signal

OPEN

CLOSE

(note)Vcc=5V

MIRRORTRACK MIRRORTRACKMIRROR

TE Signal

TC Detector

Brake signal

VTC +
VTC -

HF

TE

MR Detector

TC Detector

QQD

T

Brake signal

MITSUBISHI

ELECTRIC

( / 88 )

50

D-62481-87I

(example)Single track jump

(1)

(2)

(3)

(4)JFJR

TS ON

PLUSE

KICK PULSE

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Start

TS OUT

TC OUT

TS ON

1

0

SEND Jump Pulse Command

R0; D13=1

DOUT2=H?
(mirror?)

BRAKE

JP1H= "0"-->"1"
JP!L= "1"-->"0"

wait 300 uSec

Yes

No

( Jump forward )

time over?

Yes

Brake pulse generation

(1)

(2)

No

(3)

JP1H

1

0

TS ON
(R0; D6,D4,D3=0)

(4)

Track settling

wait 5mSec

Brake cancel

end

MITSUBISHI

ELECTRIC

( / 88 )

51

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•T-3). Track Kick Logic ( R0 ;)

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Internal

JP1H

0
0 1

1

0
0

0 X
0 X
1 0
1 0
1 0
1 0

Internal

JP1L

0

0
X
X

D13

KICK DIS

1
1

1
0

0
0
0
0
0
0

0

D4 D3 Switches

TS SERVO

X
X

X

0
0

1
1

0
0
1

1

X
X

X

0
1

0
1
0
1
0
1

JF JR

open

close

open

open
open

close

open

open

close

open

open

open

open

close

open

close
open
open

open
open

close
open

Function

No Track Jump

JP1-Track Jump Forward
JP1-Track Jump Reverse

No Track Jump

Track Jump Reverse
Track Jump Forward

No Track Jump

No Track Jump
JP1 Direct Command
JP1 Direct Command

No Track Jump

MITSUBISHI

ELECTRIC

( / 88 )

52

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•S-1). SS PLAY Logic ( R0; )

•S-2). SS Detector

SS DET

15

Pin

( Dout Logic)

S). SS Block

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

VREF = 1/2Vcc

Internal

JP1L

X

D1 D0

SS SERVO

0

SF

JP1 Input
Circiut

SR

Dout Logic

SS Detector

SS OFF

SS PLay Logic

SS OFF

10k

10k

SS+IN SS-IN SS OUT

1615

SS

SS BUF

17

Switches

Function

SS OFF

0

close

SF

open

SR

open

Sledge Servo OFF

0 0
1

0

1 1

X

0
1

1

SS + IN

15

VREF=1/2Vcc

1
1

0
0
1

∞

+

close

close
close

close

open

SS PLAY (R0; D2)

(Dout Logic)

open
open

close

open

open

SS BUF

close

open
open
open

open

Sledge Move Reverse
Sledge Move disabled
Sledge Move Forward

Sledge Move disabled

Sledge Servo ON

SS+IN

R0;D2

SS PLAY

0

1
1

0

0

1

0
1

Switch

SS BUF

open
open

open

close

SS DET

L

L
H
H

MITSUBISHI

ELECTRIC

( / 88 )

53

D-62481-87I

•A-1). JP1 INPUT Circiut

JP1/SG

24

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

JP1H (Track Kick Logic)

JP1H (FZC Shock Logic)

16k

UA (Adjust)

16k 8k 8k 4k 2k

JP1L (Track Kick Logic)

JP1L (SS Play Logic)

UA: SG( Internal)

0
1

2

3
4
5
6

7

RS;D0 RS;D1 RS;D2

0 0 0

1
1 1

1
0

0 0
0
0
1 0 0

1 0 1
1 1 0

1 1 1

Ua(V)

+0.83

+0.5
+0.36
+0.28
+0.23

+0.19
+0.17

+0.15

( Vref (Standard))

Pin24;

Tristate

JP1/SG

0
1

VREF = 1/2Vcc

JP1H JP1L

0 1

1

0

0
0

MITSUBISHI

ELECTRIC

( / 88 )

54

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•T-4). Track Cross Detecter Block

(HFOK And MR
Dectector )

Track Cross circuit

28

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

TE1 LPF

MR

100k

TE1 output

TC DET LPF SW

47p

MR

39k

39k

100k

1k
1k

< 2.5625V

> 2.4375V

SRQ

Q

R3;D11
FBAL

0
1

DTQ

Q

D

Q

T

Q

TC DET LPF SW

open

close

TC HS
( Dout Lgic)

Brake signal

( Track Hold Logic )

TC LS
( Dout Logic )

DIR
( Dout Logic )

•L-1).HFD MODE ( R0;D12)

Mirror

MR

Detector

HFOK
Detector

HFOK

R0;D12
HFD MODE

0
1

HFD OUTPUT

HFOK

MR

MITSUBISHI

ELECTRIC

( / 88 )

55

HFD

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

•Mirror Detector Circiut

•HFOK Detector Circiut

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MR IN

47

Brake Bit

• MR ratio

Peak hold

Bottom hold

Brake
( R0; D5)

0

1

BW WIDE

R1;D13

Switch

Close

Open

43

MRC

MR( Ratio )

0.41 :MR-ON

0.47 :MR-OFF

0.52 :MR-ON

0.58 :MR-OFF

Peak hold
(Low speed)

Brake
R0;D5

27.5k

20k

V 47

Vref

18.5k

A

SRQ

MR
( Internal)

26k

20k

13k

VREF = 1/2Vcc

B

MR(Ratio) = =
( normal )
=

B

0.41 :MR-ON,0.47 :MR-OFF

A

0.52 :MR-ON, 0.58 :MR-ON

( brake )

MR IN

47

HF OUT 48

5.1k
51k

51k

51k

51k

Vref-0.19V

t

MR

MR-ON MR-OFF

HFC

42

HFOK

10k

VREF = 1/2Vcc

MITSUBISHI

ELECTRIC

( / 88 )

56

D-62481-87I

•L-2). Jump/Sledge Pulse Current

Vcc

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

R

I

9

IREF

<Jump Pulse Current>

IJF,IJR=

<Sledge Pulse Current>

ISF,ISR=

(example)

Vcc=5(V),VBE=0.7(V),R=100(kΩ)
IJF,IJR=21.5 (uA)
ISF,ISR=43.0 (uA)

Vcc-VBE

2R

Vcc-VBE

R

MITSUBISHI

ELECTRIC

( / 88 )

57

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

• L-3). BW WIDE ( R1 ; D13 )

• L-4).TG3 ( R3; D10 )

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D13

1

0

D10

0

1

BW WIDE Track LPF ( kHz ) Focus LPF( kHz)

1 time speed

8 times speed

TG3 SW

OFF

ON

66

265

70

280

MR Detector

Cut off Frequency(kHz)

30

100

MITSUBISHI

ELECTRIC

58

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MITSUBISHI

ELECTRIC

( / 88 )

59

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

Focus Servo System1

ADJ FO2

b

ADJ FO1

FS HOLD

BW WIDE

BW WIDE

100k

47p

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

( FE Amp, FS Amp, Focus offset ADJ, Focus gain ADJ )

0.1P

a

JP1/SG

B

53

60k

47k

B

-B
12p

0.1P

A

54

60k

47k

A

-A

FG SIG

JP1 Input

24

B

A

Focus offset
Method II

Circuit

12p

230k

Buffer

36p

Buffer

36p

30k

Focus offset Method I

Focus Balance2

A-B

Focus

30k

Balance1

FG RET

Focus gain1

FZC Shock
Circuit

FE1

-IN

37

Focus
gain3
(offset)

Focus gain
judgment

36

FE1

FZC OFF

FE1

100k

FE2
+IN

Focus
gain2

18k

2k

35

34

220k

FS ON

1k

Focus offset

Method II

FG1

FE2 -IN

33 32

FG1

22k

FS OFF

ADJ FBAL

FE2

COMP IN

pin

FG2

FE2
OUT

44

31

a b

Foucs Search
Circuit

Focus Offset

38

OSF

Voltage

39

CFSR

( Note ) Resistors and Capacitors without value are externals.

31

FG2

FG2

Focus offset

Method I

FS

30

FS -IN FS OUT

pin

32

FE2 OUT

Focus
offset
judgment

29

VREF=1/2Vcc

Focus
Actuator

MITSUBISHI

ELECTRIC

( / 88 )

60

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

Focus Search Circuit

Pin

32

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

FE2 OUT

Focus Search
Circuit

VREF

FG2

31

FG2

30

FS-IN

FS

CFSR

39

FS OUT

29

Focus
Actuator

VREF=1/2Vcc

(note)Resistors and Capacitors without value are externals except the resistor for the adjustment.

MITSUBISHI

ELECTRIC

( / 88 )

61

D-62481-87I

Focus Servo System2

34

45

( HF Amp, Focus Balance Detector )

COMP
IN

min.18~max.18kΩ

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

DSP

HFC

42

AB

HF -IN

51

49

HF OUT

48

47

MR
IN

46

34

FBI

FBO

44

0.2p

C

52

C

B

53

B

30k

5k

C

0.1p

60k

HF

5k

FBAL

11k

1k

50p

FBAL
ADJ2

Focus
Balance
judgment

10k

B

0.1p

A

A

54

HFOK
Detector

A

51k

51k

60k

5.1k

10k

HF signal

High Speed Bottom
Hold Output

Low Speed Bottom
Hold Output

HFOK

t

28

34

HFD

Bottom
Hold circuit

Mirror Detector

MR
(Internal)

Peak
Hold circuit

( Note ) Resistors and Capacitors without value are externals.

Low Speed Bottom
Hold circuit

R1;D13 BW WIDE
(Cut off frequency)

43

MRC

MITSUBISHI

ELECTRIC

( / 88 )

62

R0;D5 Brake
(MR ratio)

VREF=1/2Vcc

D-62481-87I

Tracking Servo System 1

F

E

TS HOLD

( Offset)

-IN

BW WIDE

BW WIDE

100k

100k

47p

TC DET LPF SW

Track offset
Method II

MITSUBISHI SOUND PROCESSOR LSI

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

( TE Amp, TS Amp, Track offset ADJ, Track gain ADJ ,Track balance ADJ))

b

Track offset Method I

TE1 -IN

4.5p

1.5p

30k

55

E

a

4.5p

1.5p

56

F

400k

E

400k

F

30k

Track Balance1

Track Balance2

Track gain1

F-E

Track
gain3

2

TE1

TG RET

TE1

18k

3

TE2

4

Track
gain2

TS ON

2k

1k

Track gain
judgment

M62481FP

TG1

TG1

220k

TS OFF

TE2 -IN

6 75

TE2

22k

TE2 OUT

pin

11

JP1/SG

OST

a

24

1

b

TE2 OUT
pin

7

JP1 Input
Circuit

Track Offset
Voltage

JF

JR

TG2

11

TG2

TG SIG

270k

TC Detector
Circuit

TS

13

Track offset

Method I

14

TG3

12

TG3 TS -IN TS OUT

ADJ TBAL

Track offset

Method II

ADJ T02

ADJ FBAL

ADJ T01

Track
offset
judgment

SS Amp.

pin

15

Track Balance
judgment

COMP IN

44

( Note ) Resistors and Capacitors without value are externals.

Track
Actuator

MITSUBISHI

ELECTRIC

( / 88 )

63

VREF=1/2Vcc

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

Tracking Servo System 2

( SS Amp, S-1).SS Play Block and S-2). SS Detector Block )

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

pin 14

TS OUT

JP1 Input
Circuit

SS PLay Logic

SS OFF

SS OFF

SF

SR

10k

SS +IN

10k

1615

SS -IN

Dout Logic

SS Detector

SS

SS BUF

Sledge
Actuator

17

SS OUT

VREF=1/2Vcc

( Note ) Resistors and Capacitors without value are externals.

MITSUBISHI

ELECTRIC

( / 88 )

64

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

Adjustment Block

(Internal)

(Internal)

(Internal)

(Internal)

1

2

47p

47p

TC DET LPF SW

input is selected by
ADJ-FBAL Switch
control signal

OPEN

Active

Active

CLOSE

Active

Active

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

I ) All adjustment are done via internal Adj Comp.
II) No capacitor at CLPF pin, MCU A/D convertor at CLPF pin. All adjustment are done via A/D in

MCU. All adjustment signals ( Focus offset method 1.2 , Track offsert method 1.2, Focus balance ,
Track balance , Focus gain and Track gain ) are aviable at CLPF pin .

I )

CLPF

20

II)

MCU

A/D

TS OUT

FS OUT

COMP IN

14

29

44

Track Cross
Detector Block

TE1 output

FE1 output

A-B output

F-E output

Track Kick
Block

FZC Shock
Block

FG RET

TG RET

JP1H(Internal)

ADJ TBAL

ADJ TO2

ADJ FO2

ADJ TO1

ADJ FO1

ADJ FBAL

FG SIG

220k

220k

230k

47p

470

*1)

XOR

3k

68k

CMP
OFFSET

100k

6.8k

68k

Switches
comparator

ADJ-FBAL Switch

ADJ-FBAL Switch

Switched Adj.Com.

330k

2.2k

Switching
Comparetor
Input

1 2

Not

Dout
Logic

Not

JP1/SG

24

*1) The IC is protected , if more than one of the switches (ADJ GAIN,ADJ TBAL,
ADJ TO2,ADJ FO2,ADJ TO1,ADJ FO1,ADJ FBAL FG RET or TG RET)
are closed at the same time.
It is not a resonable and specified adjustment mode,if more than one of the switches ADJ GAIN,ADJ
TBAL,ADJ TO2,ADJ FO2,ADJ TO1,ADJ FO1,ADJ FBAL are closed at the same time.

( Note ) Resistors and Capacitors without value are externals.

JP1 Input
Circuit

UA

TG SIG

270k

2 37

FE1-IN

TE1-IN

MITSUBISHI

ELECTRIC

( / 88 )

65

VREF=1/2Vcc

18

DETFIL

D-62481-87I

Adjustment Switch

• ADJ FO1 (R1;D3)

BIT SWITCH

R1 ; D3
ADJ FO1

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

ADJ FO1

Remark

0

1

• ADJ FO2 (R1;D2)

BIT SWITCH

R1 ; D2

ADJ FO2

0

1

• ADJ TO1 (R1;D1)

BIT SWITCH

R1 ; D1

ADJ TO1

0

1

OPEN

CLOSE

ADJ FO2

OPEN

CLOSE

ADJ TO1

OPEN

CLOSE

Focus offset I
adjustment

Remark

Focus offset II
adjustment

Remark

Track offset I
adjustment

• ADJ TO2 (R1;D0)

BIT

R1 ; D0

ADJ TO2

0

1

SWITCH

ADJ TO2

OPEN

CLOSE

MITSUBISHI

ELECTRIC

( / 88 )

66

Remark

Track offset II
adjustment

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

MITSUBISHI

ELECTRIC

( / 88 )

67

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

ADJ FBAL

ADJ GAIN

• TBAL ( R0; D9 )

Control bit

R0; D9
TBAL

0
1

ADJ TBAL

open

close

•FBAL ( R3; D11), FGAIN ( R3; D13), TGAIN ( R3; D12)

R3; D11
FBAL

0
0

0
0

1
1
1

1

Control bit

R3; D13
FGAIN

0
0

1
1

0
0

1
1

R3; D12
TGAIN

0
1
0
1

0
1
0
1

Remark

Track Balance adjustment

Switches

FG SIG

open open open open open
open open

close close

open

close

FG RET TG SIG TG RET

close

open

close
close

MITSUBISHI SOUND PROCESSOR LSI

open

close close

open open

close closeclose
open open

close closeopen open open
open open

close closeclose

close
close

close

open
open

open
open

open
open

open

open

close
close

M62481FP

Remark

Track Gain adjustment
Focus Gain adjustment

Focus Balance adjustment

Control circuit example

R3;D11(FBAL)

R3;D12(TGAIN)
R3;D13(FGAIN)

R0;D9(TBAL)

• MLA/DIS pin 23 ( Discharge )

MLA/DIS

0
1

discharge

close
open

ADJ GAIN

CMP OFFSET

Remark

MITSUBISHI

ELECTRIC

( / 88 )

68

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

APC System

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Vcc

R1; D4
LASER ON/OFF

100

7.353k

1.25V

1.157k

(note1)Resistors and Capacitors without value are externals.

500k

Vcc

APC OUT

40

V40

APC IN

41

V41

Laser Diode

(V41=170mV-->V40=2.50V)

MITSUBISHI

ELECTRIC

( / 88 )

69

D-62481-87I

REGISTER LOADING

Reset Command Condition

servo IC register

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Q

D
T

R

1).

MSD

MCK

MLA

2).

MSD

MCK

MLA

Data is preloaded into latch

D13 D14 D15D12

Data is preloaded into latch

D13 D14 D15D12

26 25

H (must be) H keep

H (must be)

23

Communication between DSP and MCU on the same clock and data line,but
servo ICs latches not overwritten.

Communication between DSP and MCU on the same clock and data line,but
servo ICs latches not overwritten.

Data is loaded into
servo IC register

Data isnot loaded into

Power on reset condition

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

R0
R1
R2
R3

0
0

1 0
0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0
0
0

0

0

1

0

0

0

0

0

0

1

0

1

0

1

0

0
0

0

0

0
0
0

0

1
1

0

0

0

0
0

0
0

0

MITSUBISHI

ELECTRIC

( / 88 )

70

D-62481-87I

Bias amp and Reset

Power on reset

47k

47k

VREF

56k

47k

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

Reset

Logic
(I/F)

19

VREF

47uF

MITSUBISHI

ELECTRIC

( / 88 )

71

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

ADJUSTMENT

ADJ TO2

(offset)

OFFSET

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

• (1) TRACK BALANCE ( 16steps , 3.75%step ) Recommended Register Settings

D15 D14 D13 D12 D11 D10 D9
R0
R1

R2
R3

0

0

0

1

1

0

1

1

(note) SW control
OPEN•••••"0"
CLOSE••••"1"

1
X

X

0

30k

30k

X
X

X
0

30k

30k

D8 D7 D6 D5 D4 D3 D2 D1 D0
0
X

X

0

F-E

X

0
X

X

45k

36.3k

29.3k

51.5k

1

X

X

X

X

X

X

X

X

X

X

X
D

C
X

X

X

X
0

X
X X

X
0

X

X

X

X
B

A
X

X

h
g

f

e

Track gain 1

Track gain 2

X

X
0

0

X

X

X

X

TE1

Track gain 3

106.5k

a

VREF=1/2Vcc

45k

b

18.7k 5.1k

c

d

ADJ TBAL

ADJ GAIN

Discharge

68k

470

CMP

20

100k

3k

CLPF

68k

2.2k

330k

ADJ FO1
ADJ FO2
ADJ TO1

Dout
Logic

MITSUBISHI

ELECTRIC

( / 88 )

72

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) .Track Balance

R2;D7

R2;D6

D AC B

0
0
0
0

0
0

0

0
1
1

1
1

1
1
1

1

0
0
0
0

1
1

1
1

0
0

0
0

1
1

1
1

R2;D5

0
0
1

1
0

0
1

0
0

1
1

0
0

1
1

( R2; )

R2;D4

0
1
0

1
0

1

01

1

0
1

0
1

0

1

0

1

a

0

0 1 0 0 0 1
0

0
0

0
0 1 0

0
0

0
0

0
0

0
0 0 1

0
0
0

0
0

1
1

1

c

b

0
0

0
0

1
1

1
1

0

1

0

1

0

1

0

10

0

1
0

0
0

0
0

0

e

d

1 0 0 1 0
1

0

1
0

0
0

0
0

0 1

0

0
0

0

0

0
0

1 0

0

0
0

0
0

1

0

0

g

0
0

0 1
1

0
0

0
1
0 0
0

1
0

0

1

h

0

1

0
0
1

1
0

1
0
0
1

0

f

1

0

0

0

0
0

1

1
1

0
1

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

MITSUBISHI

ELECTRIC

( / 88 )

73

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

ADJ FO1
ADJ FO2
ADJ TO1
ADJ TO2

CBA

XXX

BW WIDE

BW WIDE

OFFSET

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

•FOCUS BALANCE ( 16steps ) Recommended Register Settings

M62481FP

A

D15 D14 D13 D12 D11 D10 D9

0

R0
R1

R2
R3

0

0

X

0

1

1

0

1

1

A

X

X
X

X

1

0

0.1p

60k

54

A

0.1p

B

B

60k

53

B

47k

12p

36p

0
X

X
1

36p

Buffer

0
X

X
X

AB

10k

10k

12p

Buffer

30k

51

34

30k

30k

D8 D7 D6 D5 D4 D3 D2 D1 D0

0
X

X
X

X

X
X

X

X

X
X

X

X

X

X

X

X

X

X
X

0

X

D
X X

X

DSP

46

34

FBI

FB

11k

h
g

f

e

FBO

1k

50p

47k

49

34

HF -IN

HF

48

34

HF OUT

45k

36.3k

29.3k

51.5k

5k

Focus Balance 2

FE1 Amp.

A-B

X
0

45

34

X
0

X

COPM IN

X
0

X

44

VREF=1/2Vcc

Focus Balance1

106.5k

a

45k

b

18.7k

c d

5.1k

30k

ADJ FBAL

MITSUBISHI

74

( / 88 )

3k

Discharge

ELECTRIC

470

6.8k

20

100k

CMP

Dout
Logic

68k

330k

2.2k

CLPF

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) .Focus Balance

R2;D3 R2;D0

R2;D2

( R2; )

R2;D1

D AC B

0
0

0
0

0
0

0

0
1
1

1
1

1
1

1
1

0
0

0
0
1
1

1
1

0
0

0
0

1
1

1
1

0
0

1
1
0
0

1
0
0

1
1

0
0

1

0
1

0
1

0
1

01

1

0
1

0
1

0

1

01

1

a

0

0
0

0

0

0

0

0
0

0

0

0

0

0
0

0
0
0

0
0

0
1

1
1

c

b

0
0

0
0

1
1

1
1

0

1

0

1

0

1

0

1

0

1
0

0
0

0
0

0

e

d
1

1
1
1
0

0
0
0
0

0
0
0

0
0

0
0

0

0

0

0

1

0

0

1
0

0
0

0
0

1
0

1

0

0

0

0

0

1

1

0

0

0
1

0

0

1

g

f

1

h
1

0

0

1

0

0
0

1
1

0
1

0

0

0
1

0

0

1

1

0

0

0

0

1

0

11

0

0
0

1

0

1

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

MITSUBISHI

ELECTRIC

( / 88 )

75

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

Logic

ADJ FO1
ADJ FO2
ADJ TO1
ADJ TO2
ADJ FBAL

Circiut

TG SIG

FG RET

TG RET

CBA

XXX

XXX

OFFSET

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

•TRACK GAIN ( 16steps , 1.4dBstep) Recommended Register Settings

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
R0
R1

R2
R3

0

0
0

1
1

0

1

X

0

X

1

0

0

X
X

X

X

X X X
0

1

0

0
X

X
XXX

X

X

X

X

X

X
X

X

D

X

X

X

X

M62481FP

X
0

X
X

X

X

0

0

X

X

X
0

X

112k

TE1 -IN

270k

6k

27k

2

TE1

JP1/SG TE1

24

JP1 Input

UA

32k 14.8k

F-E

a

b

50k 47k

h

220k

i

45k 87.5k

k

ADJ GAIN

l

XOR

47p

3

108k

m

18k

17.5k 6.65k 3.31k

95.0k

c

n

68k

TE2 AMP

d

3k

1.83k 1.06k

e

g

f

VREF=1/2Vcc

<Adjustment Method>Set phase shift at 90 deg by reference signal from JP1 (PIN 24 )

220k

18

Discharge

DETFIL

( / 88 )

470

CMP

20

MITSUBISHI

ELECTRIC

76

ADJ TBAL

Dout

100k

68k

330k

2.2k

CLPF

D-62481-87I

(2) -2.Track Gain

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

R3;D7

R3;D6

D AC B

0
0

0
0

0
0

0

0
1
1

1
1

1
1
1

1

R3;D7

0
0

0
0

1
1

1
1

0
0

0
0

1
1

1
1

R3;D6

D AC B

0

0

0

0

0

0

0

0
1
1

1
1

1
1

1
1

0
0

0
0

1
1

1
1

0
0

0
0

1
1

1
1

R3;D5

0
0

1
1

0
0

1

0
0

1
1

0
0

1
1

R3;D5

0
0

1
1

0
0

1
1

0
0

1
1

0
0

1
1

R3;D4

0
1

0
1

0

1

01

1

0
1

0
1

0

1

0

1

R3;D4

0
1

0
1

0

1

0

1

0
1

0
1

0

1

0

1

a

0

1
0

1
0

0
1 0

0

0

1

0

0

1

0

0

1
0

0
1

0
0

1
0

0

h

1

0

0

1
0

0

0

1

1

0
0

0
0

1
0

1
0

0
0

0
0

0
0

0

0

0

0

0

0

0

0

0

c

b

0
0

0
1

1
1

0
0

0

0
0

1

0

0
0

0
0

1
0

0
0

0
1

0

i k l

0
0
1

0
0

1
0

0
0

0
0

0
0

0
0

0

d

0
0

0
0

0
0

1
1
1

0
0

0
0

0
0

0

0
0
0 0

0
0

0
0
0
1
0

0
1

0
0
1
0

e

0

0

0

0
0

0

0

0

0

0

0

0

0

0

0

0

0

1

0
0

1

0

1

1

0

1

0
0

1

0

0

m

n

0

0

0

0

0
0

0

0

0

0

0

0

0
0

0
0

0
1

0

0

1

0

0

1

0

0

1

0

0
0

1

g

f

0
0
0

0
0

0
0
0
0

0
0

0
0

0
0

1

gain(dB)

- 11.2

- 9.8

- 8.4

- 7.0

- 5.6

- 4.2

- 2.8

-1.4
0

1.4

2.8

4.2

5.6

7.0

8.4

9.8

MITSUBISHI

ELECTRIC

( / 88 )

77

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

ADJ FO1
ADJ FO2
ADJ TO1
ADJ TO2
FG SIG

FG RET

TG RET

Circiut

Logic

CBA

XXX

XXX

XXX

OFFSET

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

•FOCUS GAIN ( 16steps , 1.4dBstep ) Recommended Register Setings

M62481FP

JP1/SG

D15 D14 D13 D12 D11 D10 D9

R0
R1

R2
R3

0 0
0

1
1

0

X

1
0

1

X

X

X

X
1

0

A-B

24

JP1 Input

UA

JP1H

0

0
X

X
X X X

0

X

112k 6k

32k

a

b

D8 D7 D6 D5 D4 D3 D2 D1 D0

0
X

X

FE1 -IN

X
XXX
X

X

37

X
X

X
X

36

X
X

FE1

X

X

X

X

0

0

X
D

190k

18k

FE2 AMP

17.5k 6.65k 3.31k

c

d

14.8k

50k

h

FE1

47k 45k

i

108k

m

95.0k

n

87.5k

k

l

X

X

0

0

1.83k

1.06k

e

g

f

220k

220k

47p

XOR

ADJ GAIN

ADJ TBAL

Discharge

68k

470

18

DETFIL

VREF=1/2Vcc

<Adjustment Method>Set phase shift at 90deg.by reference signal from JP1 (PIN 24 )

MITSUBISHI

ELECTRIC

( / 88 )

78

3k

Dout

100k

68k

330k

2.2k

CMP

20

CLPF

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) -2.Focus Gain

R3;D3

R3;D2

D AC B

0
0

0
0

0
0

0
0

1
1

1
1

1
1

1
1

R3;D3

0
0

0
0

1
1

1
1

0
0

0
0

1
1

1
1

R3;D2

D AC B

0
0

0
0

0
0

0
0

1
1
1

1
1
1

1
1

0
0

0
0

1
1

1
1

0
0

0
0

1
1

1
1

( R3; )

R3;D1

0
0

1
1

0
0

1

0
0

1
1

0
0

1

R3;D1

0
0

1
1

0
0

1
1

0
0

1
1

0
0

1
1

R3;D0

0
1
0
1
0
1
01
1
0
1
0

1
0

1
01
1

R3;D0

0
1

0
1

0

1

0

1

0
1

0
1

0

1

0

1

a

0

1
0

1
0

0
1

0

0

1

0

0

1

0

0

1
0

0
1

0
0

1
0

0

h

0

1

1

0

0

0

0

1

1

0
0

0
0

1

1

0

0

0
0

0
0

0

0

0
0

0

0

0
0

0
0

0

c

b

0
0

0
1

1
1

0
0

0 1 0

0
0

1

0

0
0

0
0

1
0

0
0

0
1

0

i

0
0

1
0

0
1
0

0
0

0
0

0
0

0
0

0

d

0
0

0
0

0
0

1
1

0
0

0
0

0
0

0

k

l

0 0
0 0

0
0

0
0

0
0
1
0

0
1

0
0

1
0

e

0

0

0

0
0

0

0

0
0

0

0

0

0

0

0

0

0

1

0
0

1

0

1

1

0

1

0
0

1

0

0

m

n

0
0

0

0

0

0

0

0
0

0
0

0

0

0

0

0
1

0
1

0

0

0

0

1

1

0

0

0
1

0

g

f

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
1

gain(dB)

-11.2

- 9.8

- 8.4

- 7.0

- 5.6

- 4.2

- 2.8

-1.4
0

1.4

2.8

4.2

5.6

7.0

8.4

9.8

MITSUBISHI

ELECTRIC

( / 88 )

79

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

XXX

XXX

XXX

XXX

Track Balance1

Track Balance2

Track gain1

ADJ TO2

ADJ TO1

Offset voltage

Track
gain2

HOLD

TS ON

TS OFF

ADJ TBAL
ADJ GAIN

ADJ FO1
ADJ FO2

Track Cross
Detector circiut

Dout
Logic

BW WIDE

BW WIDE

TE1 -IN

TE1

+IN

TG1

TE2 -IN

TE2 OUT

OSTEF

TG RET
CLPF

OFFSET

Track gain3
(offset)

7

TG2

TG3

TS -IN

TS OUT

100k

47p

100k

TC DETLPF SW

TG SIG

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

•TRACK OFFSET
(1) Track Offset method I ( 8steps ) Recommended Register Settings

M62481FP

D15 D14 D13 D12 D11 D10 D9

R0
R1

R2
R3

R3

0 0
0

1
1

0

X

X

1
0

C

1

X

X

B

0

0

0
X

X

X

A

0

X

1

Track

4.5p

1.5p

E

400k

30k

55

E

F-E

4.5p

1.5p

400k

30k

D8 D7 D6 D5 D4 D3 D2 D1 D0

0
X

X

TG1

22k

0

X

0

0

TE2

0
X

X

0
X

X

X X

X

X

X

2 6 75

18k

TE1

0

0

X

X

TE2

3

2k

4

TS

220k

1k

X

X

1

0
X
X

pin 11

F

56

F

270k

JF

VREF=1/2Vcc

11

TE2 OUT
pin

<Adjustment Method>MCU shood adjust output voltage of TS AMP.

TG2

JR

TS

TG3

1312

Track
Actuator

14

SS Amp.

pin

15

470

Track offset

Method I

100k

CMP

20

3k

68k

2.2k

68k

330k

MITSUBISHI

ELECTRIC

80

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

X

Track Balance1

Track Balance2

Track gain1

ADJ TO2

ADJ TO1

Offset voltage

Track
gain2

HOLD

TS ON

TS OFF

ADJ TBAL
ADJ GAIN

ADJ FO1
ADJ FO2

Dout
Logic

BW WIDE

BW WIDE

TE1 -IN

TE1

+IN

TG1

TE2 -IN

TE2 OUT

OSTEF

TG RET
TG SIG

CLPF

OFFSET

Track gain3
(offset)

TG2

TG3

TS -IN

TS OUT

100k

47p

100k

Track Cross
Detector circiut

TC DETLPF SW

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) Track Offset method II ( 8steps ) Recommended Register Settings

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
R0
R1
R2

R3

0 0
0

1
1

X

1

X

0

C

0

1

0

X
X

X

B

A

0

0

0

0
X

X

X

X X
X

X

0
X

X

X
X

X X
X

1
X

X

1

Track

32 6

4.5p

1.5p

E

400k

30k

4

55

2k

4.5p

1.5p

E

400k

30k

18k

F-E

TE1

0
X

X
X

TE2

TS

220k

1k

0

0

X

0

X X X X

X
X

5

TG1

TE2

22k

X

X
0

X

0

1

X X XR3

pin 11

7

F

56

F

270k

JF

VREF=1/2Vcc

11

TE2 OUT
pin

7

<Adjustment Method>MCU shood adjust output voltage of TE1 AMP.

TG2

JR

12

TG3

13

TS

14

Track
Actuator

SS Amp.

pin

15

Track offset

Method I

470

20

CMP

100k

3k

68k

2.2k

68k

330k

MITSUBISHI

ELECTRIC

( / 88 )

81

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

0 0 1

0 1 1

1 0 1

1 1 1

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

-2. Track Offset voltage source

R2;D13 R2;D12 R2;D11

C B

0 0 0

0 1 0

1 0 0
1 1 0

A

h

g

( R2; )

a

1
0

0
0

0
0

0
0

10k

2k

2k

c

b

0

0
0

1

1

0

0

0

0

0

0

0

0

0

0

0

e

d

0

0
0

0
1

0
0

0
0

0
0

0

0

0
0

0

1

0
1

0
0

0
0

0

g

f

h Voltage(V)

0

0
0

0

0

0
0

0
0

0
0

0

1

0
1

0

1.39

1.67

1.94

2.22

2.50

2.78

3.06

3.33

OST

f

e

1

d

c

b

a

2k

2k

Offset voltage

2k

2k

2k

2k

10k

MITSUBISHI

ELECTRIC

82

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

83R3R0R1R2

D8 D7 D6 D5 D4 D3 D2 D1 D0

X0XX00X00XX0XX0XXX0X1X1XX

XXX

1X0X0

XXX

0

XXXXXXX

01001011CBA

XXX

<Adjustment Method>MCU shood adjust output voltage of FS AMP.

Focus Balance2

Focus Balance1

Focus gain1

Method I

ADJ FO2

ADJ FO1

38

A-B

FG RET

3k

68k

2.2k

Offset voltage

FE1

220k

HOLD

FS ON

FS OFF

22k

ADJ TO1
ADJ TO2

ADJ TBAL
ADJ GAIN

53AB

60k

54

A

0.1P

30k

12p

30k

36p

Focus
gain2

18k

FE2
OUT

FE2 -IN

FG1

FE2
+IN

FE1

FE1

-IN

OSF

3633323537

A

B

BW WIDE

BW WIDE

CLPF

OFFSET

303129

Actuator

32

pin

FE2 OUT

FG2

FS -IN

Focus gain3
(offset)

12p

31

pin

100k

FZC Shock
Circiut

FZC OFF

100k

47p

100k

230k

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

•FOCUS OFFSET
(1) Focus Offset method I ( 8steps ) Recommended Register Settings

D15 D14 D13 D12 D11 D10 D9

X

M62481FP

X

X

R3

0.1P

B

60k

Focus

47k

47k

36p

2k

X

X

X

34

FG1

FS

1k

FE2

VREF=1/2Vcc

FG2

FS

Focus

FG SIG

Focus offset

470

MITSUBISHI

ELECTRIC

( / 88 )

Charge

68k

Dout
Logic

330k

CMP

20

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

84R3R0R1R2

D8 D7 D6 D5 D4 D3 D2 D1 D0

X0XX00X00XX0XX0XXX1X0X0XX

XXX

0X1X0

XXX

0

XXXXXXX

01001011CBA

XXX

<Adjustment Method>MCU shood adjust output voltage of FS AMP.

Focus Balance2

Focus Balance1

Focus gain1

Method II

ADJ FO2

ADJ FO1

38

A-B

FG RET

3k

68k

2.2k

Offset voltage

FE1

1k

HOLD

FS ON

FS OFF

22k

ADJ TO1
ADJ TO2

ADJ TBAL
ADJ GAIN

53AB

60k

54

A

0.1P

30k

12p

30k

36p

Focus
gain2

18k

FE2
OUT

FE2 -IN

FG1

FE2
+IN

FE1

FE1

-IN

OSF

3633323537

A

B

BW WIDE

BW WIDE

CLPF

OFFSET

303129

Actuator

32

pin

FE2 OUT

FG2

FS -IN

Focus gain3
(offset)

12p

31

pin

100k

FZC Shock
Circiut

FZC OFF

100k

47p

100k

230k

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) Focus Offset method II ( 8steps ) Recommended Register Settings

D15 D14 D13 D12 D11 D10 D9

X

M62481FP

X

X

R3

0.1P

B

60k

Focus

47k

47k

36p

2k

X

X
X

34

FG1

FS

220k

FE2

VREF=1/2Vcc

FG2

FS

Focus

FG SIG

68k

Focus offset

Dout
Logic

470

330k

CMP

20

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ELECTRIC

( / 88 )

MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

0 0 1

0 1 1

1 0 1

1 1 1

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

(2) -2. Focus Offset voltage source

R2;D10 R2;D9 R2;D8

C B A

0 0 0
0 1 0

1 0 0

1 1 0

h

g

( R2; )

a

1
0

0
0

0
0

0
0

10k

2k

2k

c

b

0

0
0

1

1

0

0

0

0

0

0

0

0

0

0

0

e

d

0

0
0

0
1

0
0

0
0

0
0

0

0

0
0

0

1

0
1

0
0

0
0

0

g h Voltage(V)

f

0

0
0

0

0

0
0

0
0

0
0

0

1

0
1

0

1.39

1.67

1.94

2.22

2.50

2.78

3.06

3.33

OSF

38

f

e

d

c

b

a

2k

2k

Offset voltage

2k

2k

2k

2k

10k

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ELECTRIC

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D-62481-87I

FLOW CHART OF AUTOMATIC ADJUSTMENT

(1)Basic Routine

Move pick-up to inside

DOUT1,2=0

YES

Start Track Servo

NO

Offset Ajustment I

86

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

START

Initilization

Kick disc motor

Start Focus Search

NO

Balance Adjustment

Offset Ajustment II

Focus Gain Adjustment

CRC=1

YES

Tracking Gain Adjustment

END

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ELECTRIC

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PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

D-62481-87I

DOUT1,2=0

YES

DOUT1,2=1

YES

DCBA>0

DOUT1,2=0

YES

YESNONO

0

tt(example)

Pin 27

Send New Command

Send New Command

(CBA>0)

87

(2)Automatic Adjustment

Serial Data Command:DCBA(the adjustment item)

MITSUBISHI SOUND PROCESSOR LSI

M62481FP

START

Initilization for adjustment

NO

YES

DCBA<-DCBA-1
( CBA <- CBA -1)
Send New Command

V

CLPF

DATA OUT
Pin 20 , 21

DCBA<15

( CBA<7)

DCBA<-DCBA+1
( CBA <-CBA +1)

DCBA<-DCBA+1
( CBA<-CBA+1 )
Send New Command

NO

DCBA<-DCBA-1
( CBA<-CBA-1 )

NO

END

(note)It's possible to control the tracking balance by (DCBA(CBA))

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ELECTRIC

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MITSUBISHI SOUND PROCESSOR LSI

D-62481-87I

adjustment frequency can be used (figure 3).

0

-90

-270

-360

100Hz

1KHz

10KHz

-180

Adjustment
frequency

Figure 1: Phase Diagram of Pick Up + Servo

APPLICATION NOTE

M62481FP

TE Amp.

- input

TE Amp.
Gain control

TE2 Amp.

turbulences with software.

VREF=1/2Vcc

270k

TG SIG

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

M62481FP

PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT

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

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.

JP1 Input
Circiut

Figure 3: Circuit Examples

2

TE1 Amp TG

3

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ELECTRIC

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Note.
Please correspond to phase