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