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IC BLOCK
DIAGRAM&
DESCRIPTION
IC101 LA9240ML
(Servo Signal Processor)
No.
Pin Name
I/o
Function
No. Pin Name Uo
Function
1
FIN2
I Connection Pin for Photo Dirxfeof Pickup.
34
TGL
I Input Pin for Tracking Gain Control Signal from
2
FIN1
I FIN2 + FIN1 =
RF, FIN2 - FINI = FE
Digital Signal Processor. TGL = H : Gain Low
3
E
I
Connection Pin for Photo Diode of Pickup.
35
TOFF
I
Input Pin for Tracking Off Control Signal from Digtal
4
F
I
E- F=TE
Signal Processor. TOFF = H: OFF
5
TB
I
Input Pin for DC ingredient of TE Signal.
s
TES
o
Output Pin for Track Error Sense Signal to Digital
6
TE-
1 Connection Pin for Gain Setting Resistor of TE
Signal Processor.
Sgnal to TE Signal Pin.
37
HFL
I
High Frequency Level Signal Use Deted[on
7
TE
o
Output ~n for Tracking Error Signal.
Main-Beam Position is on the pit or mirror.
8
TESI
I
Input Pin for Track Error Sense Comparator.
38
SLOF
I
Input Pin for Sled Sefvo Ott Control.
TE Signal through Band Pass, and Inputted.
39
cv-
1 Input Pin for Constant Linear Veloaty Error
9
Scl
I
Input Pin for
Shock Detef.Xon.
40
Cv+
I
Signal from Digital Signal Processor.
10
TH
I Connection Pin for
Time Constant Setting of
41
RFSM
o
Output Pin for RF Signal.
Tracking Gain.
42
RFS-
1 connection Pin for Gain Setting of RF and
11
TA
o
Output Pin for TA Amplifier.
Caw.tant Setting of 3T Compensation of the
12
TD-
1 Connection Pin for Constant Tracking Phase
EFM Signal with RFSM Pin.
Compensation, Consist of between TD and VR.
43
SLC
o Slice
Level Control Signal is Output Pin.
13
TD
I
Connection Pin for Constant of Traddng Phase
It Control Level of Data-SIii
by Digital Signal
Compensation.
Processor of the RF Waveform.
14
JP
I
Connection Pin for Amplitude Setting of Tracking
44
SLl
I
Input Pin for Level Control of Data-Sfice by
Jump (Kick Pulse) Signal.
Digtal Signal Processor.
15
TO
o
Output Pin for Tracking Control Signal.
45
DGND
-
Ground for Digital Signal.
16
FD
o Output
P in for Focusing Control Signal.
46
FSC
o
Output Pin for Focus Search Smooth Condenser
17
FD-
1 Connection Pin for Constant of Focusing Phase
47
TBC
o
connection Pin for Variable Range Setting of
Compensation, Consist of between FD and FA.
EF Balance.
18
FA+
I
Connection Pin for Constant of Focusing Phase
48
NC
-
No Connect
Compensation, Consist of between FD- and FA-.
49
DEF
o
Output Pin for Defect Detection of Disc.
19
FA-
1 Connection Pin for Constant of Fccusing Phase
xl
CLK
I
Input Pin for Reference Clod Pulse.
Compensation, Consist of between FA and FE.
(4.23 MHz of Digital Signal Processor)
20
FE
o
Output Pin for Focusing Error Signal.
51
CL
1 Input Pin of Clock Pulse for Command from
21
FE-
1 Connection Pin for Gain Setting Resistor of FE
Micro Processor.
Sgnal to FE Signal Pin.
S2
DAT
i
Input Pin of Data for Command from Micro
22
AGND
-
Ground for Analog Signal.
Processor.
a
8P
o CMput
Pin for Single End of Input Signal of the
S3
CE
I
Input Pin of Chip Enable for Command from Micro
CV+, CV- Pin.
Processor.
24
SPI
I
Input Pin for Spindle Amplifier.
54
DRF
o Output
Pin
for Detect of RF Level.
25
SPG
I
Connection Pin for Gain Setting Resistor, when
56
FSS
I
Select Pin for Focus Search Mode
Spindle 12 cm Mode.
%
VCC2
-
VCC for Servo and Digital Root.
26
sP-
1 Connection Pin for Omstanf of Spindle Phase
57
REFI
I
Bus Control Connection Pin for Reference Vottage.
Compensation with SPD Pin.
56
VR
o
Output Pin for Reference Voltage.
27
SPD
o
Output Pin for Spindle Control Signal.
w
LF2
I
Connection Pin for Time Constant Setting of
26
SLEQ
I
Connection Pin for Constant of Sfed Phase
Detect Detection of the Disc.
Compensation.
e)
PH1
I
Capacitor Connection Pin for P@-hold
of RF Signal.
29
SLD
o 0 utput
Pin
for Sled Control Signaf.
61
BHI
I
Capacitor Connection Pin for Bottom-holdof
30
SL-
1 Input Pin for Sled Signal from Micro Prwessor.
RF Signal.
31
SL+
I
62
LDD
o
Output Pin of APC (Automatic Power Control) Circuit.
3
JP-
1 Input Pin for Tracking Jump Signal from Digital
63
LDS
I
Input Pin of APC (Automatic Power Control) Circuit.
33
JP+
I
Signal Processor.
64
Vccl
I
VCC for RF Root.
—-
.
-11-
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