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IC, LA9241ML
Pin No.
Pin Name
1
FIN2
2
FIN1
3
E
4
F
5
TB
6
TE–
7
TE
8
TESI
9
SCI
10
TH
11
TA
12
TD–
13
TD
14
JP
15
TO
16
FD
17
FD–
18
FA
19
FA–
20
FE
21
FE–
22
A-GND
23
NC
24
SP
25
SPG
26
SP–
27
SPD
28
SLEQ
29
SLD
30
SL–
31
SL+
32
JP–
33
JP+
34
TGL
35
TOFF
36
TES
37
HFL
38
SLOF
39, 40
CV–, CV+
I/O
Connects to the pickup's photo diode; adding this pin to pin FIN1 generates RF signal,
I
and subtracting it generates FE signal.
I
Connects to the pickup's photo diode.
Connects to the pickup's photo diode; subtracting this pin from pin F generates
I
TE signal.
I
Connects to the pickup's photo diode.
I
Input for DC component of TE signal.
I
Connects to the resistor between this pin and TE pin for setting the gain of TE signal.
O
Output for TE signal.
I
Input for TES (Track Error Sense) comparator, TE signal is band-passed and inputted.
I
Input for shock detection.
I
For setting tracking gain time constant.
O
TA amplifier output pin.
I
For constructing tracking phase compensation constant between TD and VR pins.
O
For setting tracking phase compensation.
I
For setting the amplifier of tracking jump signal (kick pulse).
O
Output for tracking control signal.
O
Output for focusing control signal.
I
For constructing focusing phase compensation constant between FD and FA pins.
O
For constructing focusing phase compensation constant between FD– and FA– pins.
I
For constructing focusing phase compensation constant between FA and FE pins.
O
Output for FE signal.
I
Connects to the gain-setting resistor of FE signal between this pin and FE pin.
–
GND for analog signals.
–
Not used.
I
Single end output of CV+ and CV– pin input signal.
I
Connects to the gain-setting resistor during spindle 12cm mode.
I
Connects to spindle phase compensation constant together with SPD pin.
O
Output for spindle control signal.
I
Connects to sled phase compensation constant.
O
Output for sled control signal.
I
Input for sled-sending signal from microcontroller.
I
Input for sled-sending signal.
I
Input for tracking-jump signal from DSP.
I
Input for tracking gain control signal from DSP; gain is low if TGL = "H".
I
Input for tracking off control signal from DSP; off if TOFF = "H".
O
Outputs TES signal to DSP.
HIGH FREQUENCY LEVEL; used to determine whether the main beam is on a pit or
O
on a mirror.
I
Input for sled servo off control.
I
Input for CLV error signal from DSP.
– 51 –
Description
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