-24-
Pin No.
Pin Name
I/O
Description
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
(NC)
TJP
TGL
TOFF
TES
HFL
CLV
GND
RF
RF-
SLC
SLI
DEF
DRF
FSC
TBC
FSS
VCC
REFI
VR
LF2
PH1
BH1
LDD
LDS
(NC)
No connection.
Track jump signal input from the DSP.
Tracking gain control signal input from the DSP.
Tracking off control signal input from the DSP.
TES signal output to the DSP.
Output for the HFL signal that indicates whether the main beam is positioned over pits or mirror.
CLV error signal input from the DSP.
GND.
RF output.
In conjunction with the RF pin, sets the RF gain and sets the EFM 3T compensation.
Output for control of the RF waveform data slice level according to the DSP.
Input for control of the RF waveform data slice level according to the DSP.
Disc defect detection output.
RF level detection output.
Focus search smoothing capacitor output.
E/F balance variation range setting.
Focus search mode setting.
VCC.
Reference voltage bypass capacitor connection.
Reference voltage output.
Disc defect detection time constant setting.
RF signal peak hold capacitor connection.
RF signal bottom hold capacitor connection.
APC circuit output.
APC circuit input.
No connection.
IC DESCRIPTION-1/2 (LA9250M)-2/2
—
I
I
I
O
O
I
—
O
—
O
I
O
O
O
—
—
—
—
O
—
—
—
O
I
—
