– 53 –
CD-C449W/K449W
IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (2/2)
Pin No.
Port Name
Function
51 CL Micro computer command clock input pin.
52 DAT Micro computer command data input pin.
53 CE Micro computer command chip enable input pin.
54 DRF (DETECT RF) RF level detection output.
55 FSS (Focus Serch Select) Pin to switch focus search mode. (± search/+ search for reference voltage)
56 VCC2 VCC pin for servo system and digital system.
57 REFI Pin to connect pass control for reference voltage.
58 VR Reference voltage output pin.
59 LF2 Pin to set defect detection time constant of disk.
60 PH1 Pin to connect capacitor for peak hold of RF signal.
61 BH1 Pin to connect capacitor for bottom hold of RF signal.
62 LDD APC circuit output pin.
63 LDS APC circuit output pin.
64 VCC1 RF system VCC pin.
Figure 53 BLOCK DIAGRAM OF IC
1FIN2
FIN1
E
F
TB
TE-
TE
TESI
SCI
TH
TA
TD-
TD
JP
TO
FD
FD-
FA FA-
FE FE- AGND SP SPI SPG SP- SPD SLEQ SLD SL- SL+ JP-
JP+
TGL
TOFF
TES
HFL
SLOF
CV-
CV+
RFSM
RFS-
SLC
SLI
DGND
FSC
TBC
NC
DEFCLKCLDATCEDRFFSSVCC2REFIVRLP2PH1BH1LDDLDS
SLC
RF AMP
TE
F.SERVO & F.LOGIC SPINDLE SERVO SLED SERVO
VCC1
2
3
4
6
7
5
8
9
10
11
12
13
14
15
16
17 18 19 20 21 2322 25 26 27 28 29 30 31 32
33
34
35
36
37
38
39
40
41
42
43
44
46
47
48
495051525354555657585961 60626364
45
24
APC
RF DET
REF
VCA
VCA
INTER FACE
BAL
µ-COM
I/V
T.SERVO & T.LOGIC
NC
