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IC BLOCK DIAGRAM & DESCRIPTION
UO101 LA9240M (CD RF Servo Signal Processor)
No.
-i
2
Y
Name
FIN2
I/o
Function
I
Connedon pin for ptwto diode of pickup.
I
FIN2+FINI=RF
FIN2-FIN1=FF
No.
Name
Vo
Function
%
TOFF
I
Input pin for tracking off control signal from
digital signal processor. TOFF=H: off
26
TES
o
Output pin for tracking error sense signal to
digital signal processor,
37
HFL
I
High frequency level signal use detection
FINI
E
I lGmwction
pin for photo diode of pickup.
I
4
F
I
E-F=TE
5
TB
I
Input pin for DC ingredient of
TE signal.
6
TE-
1 Connection pin for gain setting resistor of TE
I
I
I
main-beam
position is on the pit or mirror.
I
signal to
TE signal pin.
TE
o
Output pin for Tracking Error signal.
TES1
I
Input pin for tracking error sense comparator.
TE signal through band pass, and inputted.
Scl
I
Input pin for shock detection.
TH
I
Connection pin for time constant setting of
36
SLOF
I
Input pin for sled servo off control.
33
cv-
1 Input pin for constant linear velocity error signal
40
Cv+
I
from digital signal processor.
41
RFSM
o
Output pin for RF signal.
42
RFS-
1 Connection pin for gain seting of RF and
II
I
lconstantseting of3Tmmpensation of tie
I
I
I
tracking gain.
11 I
TA
I O 10utput pin for TA amplifier.
I
I
IEFM signal with RFSM pin.
431
SLC
I O I Slice level control signal is output pin, it control
I
II
I
Ilevel of data-slice bydigital signal processor of the
I
~
I
Connection pin for constant of tracking phase
com ensation, consist of between TD and VR.
I
Connection pin for constant of tracking
I
Connection pin for amplitude setting of
I
I
RF waveform,
441
SLI
I I Input pin for level control of data-slice by
digital signal processor.
45
DGND
-
Ground for digital signal.
46
FSC
o
Input pin for VCO control amplifier, consist of
..
I
I
tracking jump (kick pulse) signal.
15 ]
TO
I O 10utput pin for tracking control signal.
II
I
lPLLloopfilterwith
VCOCancl F'DQofdigital
I
16 I
FD
I O ]Outpuf pin for focusing control signal.
17 I
FD-
1 I lConnection pin for comtant of focusing phase
I
~
DEF
O Out ut in for defect detection of disc.
I
Input pin for reference clock pulse, input
I
I
compensation, consist of between FD and FA.
18 I
FA+
I lConnaction pin for constant of frxusing phase
I
I
Icompensation, consist of between FD- and FA-.
19 I
FA-
1 I Connection pin for constant of focusing phase
I
I
4.23MHz of digital signal processor.
51 I
CL
I I Input pin of clock pulse for command from
I
I
I
compensation,
consist of
between FA and FE.
20]
FE
I O IOutput pin for Focusing Error signal.
I
I
micro processor.
w]
DAT
I
Input pin of data for command from micro
21
FE-
~
I
Connection pin for gain setting resistor of FE
O Output pin for signal end of input signal of the
processor.
53
CE
I
Input pin of chip enable for command from
micro processor.
54
DRF
o
Detect
RF signal is output pin for RF level
F
22
AGND
B
SP
detection.
5s
FSS
I
Focus Serch Select
56
VCC2
-
VCC for servo and digital root.
24
z
SPI
SPG
sP-
SPD
SLEQ
SLD
SL-
1 Input pin for spindle amplifier.
I
Connection pin for gain setting resistor, when
spindle 12cm mode.
I
Connection pin for constant of spindle phase
compensation with SPD pin.
o
Output pin for spindle control signal.
I
Connection pin for constant of sled phase
corrmensation
57
REFI
I
Bus control connection pin for reference voltage.
59
VR
o
Output pin for reference voltage.
59
LF2
I
Connection pin for taim constant setting of
.
I
I
Idefect detedlon of the disc,
ml
PH1
I lCapacitor connection pin for peak-hold of
RF signal,
61
BH1
I
Capacitor connection pin for bottom-hold of
RF signal.
A
O 10utput pin for sled control signal.
I Ilnput pin for sled signal from micro processor.
~
I
Input pin for tracking jump signal from digital
I
Input pin for tracking gain control signal from
di ital si nal
rocessor. TGL=H:
ain low
Q
LDD
o
Output pin of APC(Auto Power Control) circuit.
63
LDS
I
Input pin for APC(Auto
Power Control) circuit.
64
Vccl
-
VCC for RF root.
-16-
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