CD-C602,CP-C602
– 34 –
IC1 VHiLA9241M/-1: Servo Amp., (LA9241M) (2/2)
Pin No.
Port Name
Function
49 DEF Defect detection output pin of disc.
50 CLK Reference clock input pin. 4.23MHz of DSP is input.
51 CL Microcomputer command clock input pin.
52 DAT Microcomputer command data input pin.
53 CE Microcomputer 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 REF1 Pin to connect pass control for reference voltage.
58 VR Reference voltage output pin.
59 LF2 Pin to set defect detection time constant of disc.
60 PHI Pin to connect capacitor for peak hold of RF signal.
61 BHI Pin to connect capacitor for bottom hold of RF signal.
62 LDO APC circuit output pin.
63 LDS APC circuit output pin.
64 VCC1 RF system VCC pin.
Figure 34 BLOCK DIAGRAM OF IC
IC5 VHiM56748FP-1: Focus/Tracking/Spin/Slide Driver (M56748FP)
OP1
15K 15K
25K
23K
TSD
1
192021
22
2324252627
28
2930313233343536
(N.C)REGBASE
Vcc
VCTI3(+)
VCTI3(-)
VCTI3(OUT)
VM3(-)
VM3(+)
GND
VM4(+)
VM4(-)
VCTI4(-)
(N.C)GAIN4
(N.C)STAND BY
(N.C)SS.GND
(N.C)STAND BY
23
4
5
6
7
89
10
11
12
13
14 15
16
17
18
VREI-IN
VREI-OUT
N.C
GAIN1(N.C)
VCTI(-)
VM1(-)
VM1(+)
GND
VM2(+)
VM2(-)
VCTI2(-)
GAIN2
N.C
Vcc
REG 5V(N.C)
Stand
by
OP1
OP1
PA
PA
PA
PA
10K
10K
10K
10K
10K
Vcc
10K
10.8K
3.6K
10K
10K
OP1
OP1
OP1
PA
PA
PA
PA