29
1
FIN2
I
Connected to pickup photo-diode. Adding with FIN1 pin generates RF signal, and
subtracting from FIN1 generates FE signal.
2
FIN1
I
Connected to pickup photo-diode.
3
E
I
Connected to pickup photo-diode. Subtracting from F pin generates TE signal.
4
F
I
Connected to pickup photo-diode.
5
TB
I
Input DC components of TE signal.
6
TE–
O
Connected to TE pin with resistor set TE signal gain.
7
TE
O
Output TE signal.
8
TESI
I
Input TES (TRACK ERROR SENSE) comparator. Band pass and input TE signal.
9
SCI
I
Input shock detection.
10
TH
I
Establish tracking gain value.
11
TA
O
TA amplifier output.
12
TD–
I
Compose tracking phase compensation value between TD and VR pins.
13
TD
O
Used for tracking phase compensation setting.
14
JP
I
Establish amplitude of tracking jump signal (kick pulse).
15
TO
O
Output tracking control signal.
16
FD
O
Output focusing control signal.
17
FD–
I
Compose focusing phase compensation value between FD and FA pins.
18
FA
O
Compose focusing phase compensation value between FD– and FA– pins.
19
FA–
I
Compose focusing phase compensation value between FA and FE pins.
20
FE
O
Output FE signal.
21
FE–
I
Connected to FE pin with resistor set FE signal gain.
22
AGND
–
Analog GND.
23
SP
O
Output single-end for CV+ and CV– pins input signal.
24
SPI
I
Spindle amplifier input.
25
SPG
I
Connect resistor for gain setting at spindle 12cm mode. (Not used)
26
SP–
I
Connect spindle phase compensation value with SPD pin.
27
SPD
O
Output spindle control signal.
28
SLEQ
I
Connect sled phase compensation value.
29
SLD
O
Output sled control signal.
30
SL–
I
Input sled sending signal from DSP.
31
SL+
32
JP–
I
Input tracking jump signal from DSP.
33
JP+
34
TGL
I
Input tracking gain control signal from DSP. TGL = "H" : Gain low.
35
TOFF
I
Input tracking off control signal from DSP. TOFF = "H" : Off.
36
TES
O
Output TES signal to DSP.
37
HFL
O
HIGH FREQUENCY LEVEL: Detects whether main-beam is on pit or mirror position.
38
SLOF
I
Input sled servo off control.
39
CV–
I
Input CLV error signal from DSP.
40
CV+
Pin No.
Pin Name
I/O
Description
IC, LA9241ML
30
41
RFSM
O
Output RF.
42
RFS–
O
Establish RF gain and 3T compensation value from EFM signal with RFSM pin.
43
SLC
O
SLICE LEVEL CONTROL: Control data slice level by DSP with RF waveform.
44
SLI
I
Control data slice level by DSP.
45
DGND
–
Digital GND.
46
FSC
O
Connected to focus search smoothing capacitor.
47
TBC
I
TRACKING BALANCE CONTROL: Establish EF balance variable range.
48
NC
–
Not used.
49
DEF
O
Output disc defect detection.
50
CLK
I
Input reference clock. Inputs 4.23MHz from DSP.
51
CL
I
Input microcomputer command clock.
52
DAT
I
Input microcomputer command data.
53
CE
I
Input microcomputer command chip enable.
54
DRF
O
Detect RF: Output RF level detection.
55
FSS
I
FOCUS SEARCH SELECT: Switches focus search mode (between
±
search
and + search against reference voltage). (Not used)
56
VCC2
–
Servo/digital VCC.
57
REF1
–
Connected to reference voltage bypass condenser.
58
VR
O
Output reference voltage.
59
LF2
–
Establish value in detecting disc defect.
60
PHI
–
Connected to capacitor used to hold peak of RF signal.
61
BHI
–
Connected to capacitor used to hold bottom of RF signal.
62
LDD
O
APC-circuit output pin.
63
LDS
I
APC-circuit input pin.
64
VCC1
–
RF VCC.
Pin No.
Pin Name
I/O
Description
All manuals and user guides at all-guides.com
all-guides.com
Summary of Contents for CSD-ED79
Page 10: ...14 13 SCHEMATIC DIAGRAM 2 MAIN 2 2 SECTION All manuals and user guides at all guides com...
Page 13: ...20 19 SCHEMATIC DIAGRAM 3 FRONT LED KEY SECTION All manuals and user guides at all guides com...
Page 15: ...23 IC BLOCK DIAGRAM IC LA6541D IC LC72121M All manuals and user guides at all guides com...
