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... .... . .,
IC BLOCK DIAGRAM
& DESCRIPTION
IC6 LA9240M(CD
RF Servo Signal Processor)
No. Name
I/d
Function
1
FIN2
I
Connection pin for photo diode of pickup.
2
FIN1
I
FIN2+FIN1=RF, FIN2-FIN1 =FE
3
E
I
Connection pin for photo diode of pickup.
No. Name
II(
35
TOFF
I
36
TES
o
37
HFL
I
38
SLOF
I
39
cv-
1
40
Cv+
I
41
RFSM
0
42
RFS-
1
Function
iInput pin for tracking off control signal from
Idigital signal processor. TOFF=H: off
~ Output pin for tracking error sense signal to
~ digital signal processor.
1 High frequency level signal use detection
main-beam position is on the pit or mirror.
Input pin for sled servo off control.
Input pin for constant linear velocity error signal
from digital signal processor.
Output pin for RF signal.
Connection pin for gain setting of RF and
constant setting of 3T compensation of the
41
F
I I I E-F=TE
51TB
I I Input pin for DC ingredient of TE signal.
6
TE-
1
Connection pin for gain
setting resistor of
TE
signal to TE signal pin.
Output pin for Tracking Error signal.
Input pin for tracking error sense comparator.
TE signal through band pass, and inputted.
Input pin for shock detection.
Connection pin for time constant setting of
tracking gain.
Output pin for TA amplifier.
Connection pin for constant of tracking phase
compensation, consist of between TD and VR.
Connection pin for constant of tracking
Phase compensation.
Connection pin for amplitude setting of
tracking jump (kick pulse) signal.
Output pin for tracking control signal.
Output pin for focusing control signal.
Connection pin for constant of focusing phase
compensation, consist of between
FD
and FA.
Connection pin for constant of focusing phase
compensation, consist of between FD- and FA-.
Connection pin for constant of focusing phase
compensation, consist of between FA and FE.
-7
-ii-
-6
-r
-r
T
EFM signal with RFSM pin.
43
SLC
o
Slice level control signal is output pin, it control
ii
Z
+
44
SLI
level of data-slice by digital signal processor of thd
RF waveform.
Input pin for level control of data-slice by
digital signal processor.
Ground for digital signal.
Input pin for VCO control amplifier, consist of
PLL loop finer with VCOC and PDO of digital
signal processor.
Tracking Balance Control
T
ii
T
TO
I
-r
JP
t
45
DGND
46
FSC
E
z
v
-F
7
-r
TO
F
FD-
4=
47
TBc
F
48
NC
49
DEF
50
CLK
- I Not connection
O 10utput pin for defect detection of disc.
-i
FA+
I
Input pin for reference. clock pulse, input
4.23 MHz of digital signal processor.
I
Input pin of clock pulse for command from
micro prtiessor.
'
I
Input pin of data for command from micro
processor.
I
Input pin of chip enable for command from
micro processor.
o
Detect RF signal is output pin for RF level
detection.
I
Focus Serch Select
-
VCC for servo and digital root.
I
Bus control connection pin for reference voltage.
o
Output pin for reference voltage.
I
Connection pin for taim constant setting of
defect detection of the disc.
I
Capacitor connection pin for peak-hold of
-r
FA-
l_
51
CL
20
FE
o
Output pin for Focusing Error signal.
21
FE-
I
Connection
pin for gain setting resistor of FE
52
I
DAT
signal to FE signal pin.
22
AGND
-
Ground for analog signal.
23
SP
o
Output pin for signal end of input signal of the
CV+, CV- pin.
24
SPI
I
Input pin for spindle amplifier.
25
SPG
I
Connection pin for gain setting resistor, when
spindle
12cm
mode.
26
sP-
1
Connection pin for constant of spindle phase
compensation with SPD pin.
27
SPD
o
Output pin for spindle control signal.
28
SLEQ
I
Connection pin for constant of sled phase
*
55
FSS
56
VCC2
+
57
REFI
58
VR
59
LF2
F
60
PH1
61
BHI
compensation
29
SLD
o
Output pin for sled control signal.
30
SL-
}
Input pin for sled signal from micro processor.
RF signal.
I
Capacitor connection pin for bottom-hold of
I
I
I RF signal.
62 I
LDD
I O 10utput pin of APC(Auto Power Control) circuit.
%
--1-
32
JP-
33
JP+
34
TGL
~
I
Input pin for tracking jump signal from digital
I
Input pm for tracking gam control signal from
di ital si nal rocessor. TGL=H:
ain low
63 I
LDS
I I I
Input pin for APC(Auto Power Control) circuit.
64 I VCC1
- I VCC for RF root.
1
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.... . . ..
. . . . .
. .,, -,
... .
"..'.
/ .
-14-
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