MITSUBISHI SOUND PROCESSOR ICs
MITSUBISHI SOUND PROCESSOR ICs
M62475FP
M62475FP
AUTOMATIC ADJUSTMENT CD
ADJUSTMENT CD PREAMPLIFIER
CONTROLLER
AUTOMATIC
PREAMPLIFIER SERVO
SERVO CONTROLLER
DESCRIPTION
The M62475FP is an IC that contains preamplifier/servo amplifier necessary for optical pickup servo
control for CD player.
This IC also supports automatic adjustment with microcomputer control.
FEATURES
Pickup servo control can consist of the M62475FP only
Supporting 3-beam system
Built-in serial data command interface with MCU to reduce load
on MCU
Built-in circuit for automatically adjusting tracking balance,
tracking/focus gain
Built-in internal self reset circuit
Outline 42P2R-A
RECOMMENDED OPERATING CONDITIONS
Supply voltage range..............................................V
CC=
4.5 to 5.5V
Rated supply voltage.......................................................... V
CC=
5V
0.8 mm pitch 450 mil SSOP
(8.4 mmX17.5 mmX2.0 mm)
SYSTEM CONFIGURATION
DSP for CD
FOCUS ACTUATOR
M62475FP
HF
PREAMPLIFIER
FOCUS
SERVO
MCU I/F
OPTICAL
PICK-UP
PD
FE PREAMPLIFIER
FOCUS
SEARCH
AUTOMATIC
ADJUSTMENT
RESET
MCU
for
CONTROL
LD
APC
TE PREAMPLIFIER
TRACKING
SERVO
SLIDE SERVO
TRACKING
ACTUATOR
SLIDE
MOTOR
MITSUBISHI
ELECTRIC
( 1 / 19 )
MITSUBISHI SOUND PROCESSOR ICs
M62475FP
AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER
PIN CONFIGURATION (TOP VIEW)
A 1
B 2
C 3
E 4
F 5
SGT 6
TE -
7
42 ABC
41 HFI
40 HFO
39 MRC
38 APC OUT
37 APC -
36 APC +
35 CFSR
34 SGF
33 FE -
32 FEG
31 FS -
30 FSOUT
29 V
CC
28 RIREF
27 CLPF
26 DOUT
25 MSD
24 MCK
23 JP1/SG
22 MLA/DIS
BUILT-IN FUNCTION
• IV amplifier
• HF amplifier:HF (High Frequency Amp.)
• Focus Error Amplifier:FE (Focus Error Amp.)
• Focus Servo Amplifier:FS (Focus Servo Amp.)
• Tracking Error Amplifier:TE (Tracking Error Amp.)
• Tracking Servo Amplifier:TS (Tracking Servo Amp.)
• Sledge Motor Servo Amplifier:SS (Sledge Servo Amp.)
• Switching Circuit for Jump Brake:
TG1SW, TG2SW (Tracking Gain SW)
JF SW, JR SW (Jump Forward/Reverse SW)
SF SW, SR SW (Sledge Forward/Reverse SW)
• Focus Search Circuit
Search Signal Generator
FSOK Detector
• Track Cross Detector: TC Det (Track Cross Detector)
• Shock Detector: SC Det (Shock Detector)
• Logic Controller:
Serial Data Command Interface
Jump, Brake, Focus Search Control
Adjustment Control
• Vcc/2 generation circuit
• Auto Laser Power Control: APC (Automatic laser Power Control)
• HF Bottom Level Detector
• MR Detector
• Automatic Adjustment Circuit
Tracking balance adjustment circuit
Tracking gain adjustment circuit
Focus gain adjustment circuit
Gain adjustment signal generation and phase detection circuit
TEG 8
TG1SW 9
TE OUT 10
TC/SHOCK 11
TS + 12
TG2SW 13
TS - 14
TS OUT 15
SS + 16
SS - 17
SS OUT 18
DETFIL 19
BIAS 20
GND 21
M62475FP
Outline
42P2R-A
IC INTERNAL BLOCK DIAGRAM
CONSTANT
CONSTANT
FE
FS
FOR
FOR
JP1
HF
CONSTANT
APC
FOCUS
REVERSE REVERSE POWER
ADJUSTMENT
DATA
REVERSE INPUT FOR MIRROR REVERSE INPUT SEARCH
INPUT
INPUT SUPPLY
FILTER
INPUT
INPUT
APC NON-
SGF
DATA
CLOCK
LATCH
ABC
HF
APC
FE GAIN
FS
REFERENCE
REVERSE
OUTPUT CONTROL OUTPUT
CURRENT
OUTPUT INPUT
INPUT
OUTPUT OUTPUT OUTPUT
INPUT
42
A+B+C
41
40
39
MR
MIRROR
38
37
APC
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
2.2k
22k
FS
SW
FS
AMPLIFIER
HF
AMPLIFIER
ADJUST
I/F
10k
10k
4.7k
FOCUS
SEARCH
FE
AMPLIFIER
12k
RESET
220k A-B
220k
220k
220k
18k
TE
AMPLIFIER
47k
TC/SHOCK DET
JF JR
SW SW
47k
TG2
SW
22k
SS
SW
TS
22k
AMPLIFIER
56k
47k
47k
BIAS
(COM)
V
CC
/2
I/V
AMPLIFIER
39k
39k
TG1
SW
100k
2.2k
TC/SH SW
SF SR
SW SW
SS
AMPLIFIER
A
B
C
EF
TS1
SW
47k
1
2
B
INPUT
3
4
E
INPUT
5
6
7
8
9
10
TE
OUT
11
12
13
14
15
16
17
18
19
20
21
SGT
TE GAIN
OUTPUT CONTROL
TS NON-
REVERSE
INPUT
TS
REVERSE
INPUT
A
INPUT
C
INPUT
F
TE REVERSE
INPUT
INPUT
TG1
SW
TC/
SHOCK
TG2
SW
SS NON-
SS
REFERENCE
REVERSE
OUTPUT
VOLTAGE
INPUT
INPUT
TS
SS
GND
CONSTANT FOR
OUTPUT
REVERSE ADJUSTMENT
INPUT
FILTER
MITSUBISHI
ELECTRIC
( 2 / 19 )
MITSUBISHI SOUND PROCESSOR ICs
M62475FP
AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Symbol
A
B
C
E
F
SGT
TE
-
TEG
TG1 SW
TE OUT
TC/SHOCK
TS
+
TG2 SW
TS
-
TS OUT
SS
+
SS
-
SS OUT
DET FIL
BIAS
GND
MLA/DIS
JP1/SG
MCK
MSD
DOUT
CLPF
IREF
Vcc
FSOUT
FS
-
FEG
FE
-
SGF
CFSR
APC
+
APC
-
APC OUT
MRC
HF OUT
HF
-
ABC
Function
I-V amplifier A input
I-V amplifier B input
I-V amplifier C input
I-V amplifier E input
I-V amplifier F input
Tracking servo signal output
TE amplifier reverse input
TE amplifier gain control
Tracking gain select switch 1
TE amplifier output
Tracking cross/shock detector input
TS amplifier non-reverse input
Tracking gain select switch 2
TS amplifier reverse input
TS amplifier output
SS non-reverse input
SS amplifier reverse input
SS output
Detector filter for gain adjustment
Vcc/2 voltage output
Ground
Latch of serial data from microcomputer to servo IC/discharge of LPF for automatic adjustment
Control signal of 1 track jump brake pluse/Input of gain adjustment clock
Serial data transfer clock from microcomputer to servo IC
Microcomputer serial data
Output of data to microcomputer
Connects capacitor for determining the constant for automatic adjustment LPF
Connects resistance for setting current value of reference supply current
Power supply
FS amplifier output
FS amplifier reverse input
FE amplifier gain control
FE amplifier reverse input
Focus servo signal output
Connects the capacitor to determine the constant for focus search waveform
APC amplifier non-reverse input
APC amplifier reverse input
APC amplifier output
Constant for mirror
HF amplifier output
HF amplifier reverse input
IV amplifier (A+B+C) output
ABSOLUTE MAXIMUM RATINGS
(Ta=25˚C, unless otherwise noted)
Symbol
V
CC
V
I
P
d
K
T
opr
T
stg
Parameter
Supply voltage
Input voltage
Power dissipation
Thermal derating (Ta 25˚C)
Operating ambient temperature
Storage temperature
Ratings
5
0 to V
CC
750
7.5
-20 to +75
-40 to +125
Unit
V
V
mV
mW/˚C
˚C
˚C
MITSUBISHI
ELECTRIC
( 3 / 19 )
MITSUBISHI SOUND PROCESSOR ICs
M62475FP
AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER
ELECTRICAL CHARACTERISTICS
(Ta=25˚C, Vcc=5V, f=1kHz, CBA=100, unless otherwise noted)
Block
—
Symbol
Icc
V
REF
G
VHFAB
G
VHFC
f
HF
V
HHF
V
LHF
V
OSHF
V
TFK
R
MN
R
MJ
f
MR
G
VAP
A
TTAP
V
HAP
V
LAP
V
OSAP
G
VFE
V
HFE
V
LFE
B
ALFE
G
VFS
A
TTFS
V
HFS
V
LFS
V
OSFS
V
FSR
+
V
FSR
-
V
FZC
G
VTE
V
HTE
V
LTE
V
OSTE
B
ALTE
G
VTS
A
TTTS
V
HTS
V
LTS
V
OSTS
Parameter
Circuit current
Reference voltage
Gain (input A/B)
Gain (input C)
Frequency characteristics
Output voltage "H"
Output voltage "L"
Output offset
FSOK level
Ratio (normal)
Ratio (jump)
Frequency characteristics
Gain
Attenuation (APC OFF)
Output voltage "H"
Output voltage "L"
Input offset
Gain
Output voltage "H"
Output voltage "L"
Balance
Gain
Attenuation (FS OFF)
Output voltage "H"
Output voltage "L"
Output offset
Focus search
+
voltage
Focus search
-
voltage
Focus zero cross voltage
Gain
Output voltage "H"
Output voltage "L"
Output offset
Track balance
Gain
Attenuation (TS OFF)
Output voltage "H"
Output voltage "L"
Output offset
Test conditions
With no signal provided, after reset
With no signal provided, after reset
f=500kHz,Vi=0.5V
P-P
f=500kHz,Vi=0.5V
P-P
Vi=0.5V
P-P
Vi=4.0V
Vi=1.0V
VREF reference
VREF reference
"Shock" mode
"Brake" mode
"Shock" mode
Vi=20mVrms
Comparison with G
VAP
Vi=4.0V
Vi=1.0V
VREF reference
Vi=10mVrms
Vi=4.0V
Vi=1.0V
Comparison with G
VFE
Vi=50mVrms
Comparison with G
VFS
Vi=4.0V
Vi=1.0V
VREF reference
VREF reference, pin
35
VREF reference, pin
35
VREF reference
Vi=50mVrms
Vi=4.0V
Vi=1.0V
VREF reference
VREF reference
Vi=50mVrms
Comparison with G
VTS
Vi=4.0V
Vi=1.0V
VREF reference
Min.
20.0
2.4
3.1
9.7
1.4
3.5
—
-60
-0.22
0.35
0.46
20
25
60
4.0
—
-10
2
3.5
—
-2
19.3
60
3.5
—
-50
+0.6
-1.0
-0.22
7.0
3.5
—
-25
-1.5
-0.6
60
3.5
—
-25
Limits
Typ.
30.0
2.5
5.1
11.7
2.0
4.0
1.0
0
-0.16
0.45
0.56
30
27
—
—
—
0
4
4.0
1.0
0
21.3
—
4.0
1.0
0
+0.8
-0.8
-0.16
9.0
4.0
1.0
0
+1.5
1.4
—
4.0
1.0
0
Max.
40.0
2.6
7.1
13.7
—
—
1.5
+60
-0.10
0.55
0.66
—
29
—
—
1.0
+10
6
—
1.5
+2
23.3
—
—
1.5
+50
+1.0
-0.6
-0.10
11.0
—
1.5
+25
+4.5
3.4
—
—
1.5
+25
Unit
mA
V
dB
dB
MHz
V
V
mV
V
—
—
kHz
dB
dB
V
V
mV
dB
V
V
%
dB
dB
V
V
mV
V
V
V
dB
V
V
mV
%
dB
dB
V
V
mV
HF
FS OK
MR
APC
FE
FS
FSR
TE
TS
MITSUBISHI
ELECTRIC
( 4 / 19 )
MITSUBISHI SOUND PROCESSOR ICs
M62475FP
AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER
ELECTRICAL CHARACTERISTICS
(Ta=25˚C, Vcc=5V, f=1kHz, CBA=100, unless otherwise noted) (cont.)
Block
—
TC
SHOCK
Symbol
V
JF
V
JR
V
TC
+
V
TC
-
V
SH
+
V
SH
-
A
TG1ON
A
TG1OFF
A
TG2ON
A
TG2OFF
G
VTS
A
TTSS
V
HSS
V
LSS
V
OSSS
V
SF
V
SR
V
RST
V
ORST
G
VFE(max)
G
VFE(min)
G
VTE(max)
G
VTE(min)
B
ALTE(max)
B
ALTE(min)
V
PhFE
+
V
PhFE
-
V
PhTE
+
V
PhTE
-
V
BAL
+
V
BAL
-
G
LADJ
V
thc
+
V
thc
-
G
LC
V
SGF
+
V
SGF
-
V
SGT
+
V
SGT
-
Parameter
Jump voltage (forward)
Jump voltage (reverse)
Track cross
+
voltage
Track cross
-
voltage
Shock
+
voltage
Shock
-
voltage
Attenuation (TG1 ON)
Attenuation (TG1 OFF)
Attenuation (TG2 ON)
Attenuation (TG2 OFF)
Gain
Attenuation (SS OFF)
Output voltage "H"
Output voltage "L"
Output offset voltage
Slide voltage (forward)
Slide voltage (reverse)
Reset voltage
Output voltage
Max. gain (FE)
Min. gain (FE)
Max. gain (TE)
Min. gain (TE)
Max. balance (TE)
Min. balance (TE)
Phase difference
+
voltage
Phase difference
-
voltage
Phase difference
+
voltage
Phase difference
-
voltage
Balance
+
voltage
Balance
-
voltage
Phase detection exit low pass filter gain
Test conditions
"JF" mode, VREF reference
"JR" mode, VREF reference
"Brake" mode, VREF reference
"Brake" mode, VREF reference
"Shock" mode, VREF reference
"Shock" mode, VREF reference
"Shock" mode, VREF reference
"Shock" mode, VREF reference
"Shock" mode, VREF reference
"Shock" mode, VREF reference
Vi=50mVrms
Comparison with G
VSS
Vi=4.0V
Vi=1.0V
VREF reference
"SF" mode, VREF reference
"SR" mode, VREF reference
Pin
20
Pin
36
, after RESET
Focus gain" mode CBA=111
"Focus gain" mode CBA=000
"Track gain" mode CBA=111
"Track gain" mode CBA=000
"Track balance" mode CBA=111
"Track balance" mode CBA=000
"Focus gain" mode phase difference (90+30)˚
"Focus gain" mode phase difference (90-30)˚
"Track gain" mode phase difference (90+30)˚
"Track gain" mode phase difference (90-30)˚
"Track balance" mode +0.5V offset
"Track balance" mode -0.5V offset
C (Pin
19
)=680pF
VREF reference
VREF reference
C (Pin
27
)=2.2nF
Pin
34
, VREF reference
Pin
34
, VREF reference
Pin
6
, VREF reference
Pin
6
, VREF reference
TG
SS
RESET
ADJ
CMP
SG
Comparator level
+
Comparator level
-
Low pass filter gain
SGF
+
output voltage
SGF
-
output voltage
SGT
+
output voltage
SGT
-
output voltage
Min.
+0.10
-0.20
+42.5
-42.5
+110
-170
10
0
10
0
10
60
3.5
—
-25
+0.65
-1.25
2.1
3.5
3.5
-3.5
19
12
8.0
-12.8
3.1
1.5
3.1
1.5
2.8
1.8
-5
0
-50
-5
0.6
-0.8
0.6
-0.8
Limits
Typ.
+0.15
-0.15
+62.5
-62.5
+140
-140
20
—
20
—
12
—
4.0
1.0
0
+0.95
-0.95
2.3
4.5
5.5
-1.5
21
14
11.0
-9.8
3.3
1.7
3.3
1.7
3.0
2.0
-3
—
—
-3
0.7
-0.7
0.7
-0.7
Max.
+0.20
-0.10
+82.5
82.5
+170
-110
—
2
—
2
14
—
—
1.5
+25
+1.25
-0.65
2.5
—
7.5
0.5
23
16
14.0
-6.8
3.5
1.9
3.5
1.9
3.2
2.2
-1
+50
0
-1
0.8
-0.6
0.8
-0.6
Unit
V
V
mV
mV
mV
mV
dB
dB
dB
dB
dB
dB
V
V
mV
V
V
V
V
dB
dB
dB
dB
%
%
V
V
V
V
V
V
dB
mV
mV
dB
V
V
V
V
MITSUBISHI
ELECTRIC
( 5 / 19 )
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