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CD-C1831V
IC1 VHiLA9241M/-1:Servo Amp.(LA9241M) (2/2)
Port Name
Pin No.
51
CL
52
DAT
53
CE
54
DRF
55
FSS
56
VCC2
57
REFI
58
VR
59
LF2
60
PH1
61
BH1
62
LDD
63
LDS
64
VCC1
VCC1
64
FIN2
1
2
FIN1
I/V
E
3
4
F
5
TB
6
TE-
7
TE
8
TESI
9
SCI
T.SERVO & T.LOGIC
10
TH
11
TA
12
TD-
13
TD
14
JP
15
TO
16
FD
Micro computer command clock input pin.
Micro computer command data input pin.
Micro computer command chip enable input pin.
(DETECT RF) RF level detection output.
(Focus Serch Select) Pin to switch focus search mode. (± search/+ search for reference voltage)
VCC pin for servo system and digital system.
Pin to connect pass control for reference voltage.
Reference voltage output pin.
Pin to set defect detection time constant of disk.
Pin to connect capacitor for peak hold of RF signal.
Pin to connect capacitor for bottom hold of RF signal.
APC circuit output pin.
APC circuit output pin.
RF system VCC pin.
LDS
LDD
BH1
PH1
63
62
61
APC
VCA
BAL
VCA
TE
F.SERVO & F.LOGIC
17
18
FD-
FA
Figure 44 BLOCK DIAGRAM OF IC
Function
LP2
VR
60
59
58
REF
RF DET
µ-COM
INTER FACE
SPINDLE SERVO
19
20
21
22
23
24
FA-
FE
FE- AGND SP
SPI
NC
– 44 –
REFI
VCC2
FSS
DRF
CE
DAT
CL
CLK
57
56
55
54
53
52
51
50
RF AMP
SLED SERVO
25
26
27
28
29
SPG SP-
SPD
SLEQ
SLD
DEF
49
48
NC
47
TBC
46
FSC
45
SLC
DGND
44
SLI
43
SLC
42
RFS-
41
RFSM
40
CV+
39
CV-
38
SLOF
37
HFL
36
TES
35
TOFF
34
TGL
33
JP+
30
31
32
SL- SL+
JP-
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