lC BLOCK DIAGRAM & DESCRIPTION
IC101 LA9220MS (Servo Signal Processor)
A
No. PIN NAME 1/0
FUNCTION
..
No. PIN NAME 1/0 FUNCTION
1
FIN2 I
Connection Pin for Photo Diode of Pickup.
35 TOFF
I Input Pin for Tracking Off Control Signal from
2
FIN1
I FlFd2 +FIN1 =RF, FIN2-FIN1 = FE Digital Signal Processor. TOFF = H: Off
3 E
I
Ccmnection Pin for Photo Diode of Pickup.
36 TES o Output Pin for Track Error Sense Signal to
4 F
I E-F = TE
Digital Signal Processor.
5 TB
I Input Pin for DC ingredient of TE Signal. 37
HFL 1 High Frequency Level Signal use Detection
6
TE- 1
Connection Pin for Gain Setbng Resistor of TE
Main-Beam Position is on the pit or mirror.
Signal to TE Signal pin.
38 SLOF
I Input Pin for Sled Servo Off Control.
7
TE
o Clutput Pin for Tracking Error Signal .
39
cv-
1 Input Pin for Constant Linear Velocity Error
8
TESI I Input Pin for Track Error Sense Comparator. TE 40
Cv +
I
Signal from Digital Signal Processor.
Signal through Band pass, and Inputted.
41 RFSM
o Output Pin for RF Signal.
9 Scl
I in~ut Pin for Shock Detection.
42 RFS- 1
Connection Pin for Gain Setting of RF and
10 TH I Connection Pin for Time Constant Setting of
Constant Setting of 3T Compensation of the
Tracking Gain. EFM Signal with RFSM Pin.
11 TA o Output Pin for TA Amplifier. 43
SLC
o
Slice Level Control Signal is Output Pin, It
12
TD- 1
Connection Pin for Constant of Tracking Phase
Control Level of Data-Slice by Digital Signal
Compensation, Consist of between TD and VR.
Processor of the RF Waveform.
13 TD
I
Connection Pin for Constant of Tracking Phase 44 SLI
I
Input Pin for Level Control of Data-Slice by
Compensation.
Digital Signal Processor.
.14 JP
I
Connection Pin for Amplitude Setting of Track-
45 DGND -
Ground for Digital Signal.
ing Jump (Kick Pulse) Signal. 46
vc-
1 Input Pin For VCO Control Amplifier, Consist
15 TO
o Output Pin for Tracking Control Signal.
of PLL Loop Filter with VCOC and PDO of
16 FD
o Output Pin for Focusing Control Signal.
Digital Signal Processor.
17
FD- f
Connection Pin for Constant of Focusing Phase
47
Vcoc
o Output Pin for VCO Control Signal.
Compensation, Consist of between FD and FA.
48 Vco o Output Pin for VCO Signal.
18 FA +
1
Connection Pin for Constant of Focusing Phase 49 DEF
o Output Pin for Defect Detection of Disc.
Compensation, Consist of between FD- and 50 CLK
I Input Pin for Reference Clock Pulse, Input
FA-.
4.23 MHz of Digital Signal Processor.
19
FA- 1
Connection Pin for Constant of Focusing Phase 51 CL
I Input Pin of Clock Pulse for Command from
Compensation, Consist of between FA and FE.
Micro Processor.
20 FE o Output Pin for Focusing Error Signal .
52
DAT I
Input Pin of Data for Command from Micro
21 FE- 1
Connection Pin for Gain Setting Resistor of FE
Processor.
Signal to FE Signal pin.
53 CE
I Input Pin of Chip Enable for Command from
22 AGND - Ground for Analog Signa!.
Micro Processor.
23 SP
o Output Pin for Single End of Input Signal of the 54
DRF o
Detect RF Signal is Output Pin for RF Level
CV +, CV- Pin.
Detection.
24 SPI
I Input Pin for Spindle Amplifier. 55 LF
I Connection Pin for Adjusting of VCO Free-run.
25 SPG
f
Connection Pin for Gain Sening Resistor, when
56 VCC2 -
VCC for Servo and Digital Root.
Spindle 12 cm Mode. 57 REFI
f Bus Control Connection Pin for Reference
26 sP- 1
Connection Pin for Constant of Spindle Phase
Voltage.
Compensation with SPD Pin.
58 VR o Output Pin for Reference Voltage.
27 SPD
o Output Pin for Spindle Control Signal.
59
LF2 I
Connection Pin for Time Constant Setting of
28
SLEQ I Connection Pin for Constant of Sled Phase
Defect Detection of the Disc.
Compensation.
60 PH1
1 Capacitor Connection Pin for Peak-hold of RF
29 SLD
o Output Pin for Sled Control Signal.
Signal.
30 SL-
1 Input Pin for Sled Signal from Micro Processor.
61 BH1
f
Capacitor Connection Pin for Bottom-hold of
31
SL + I
RF Signal.
32 JP-
1 Input Pin for Tracking Jump Signal from Digital 62 LDD
o Output Pin of APC (Automatic Power Control)
33 JP +
I
Signal Processor.
Circuit.
34 TGL
I
Input Pin for Tracking Gain Control Signal from
63 LDS
I
Input Pin of APC (Automatic Power Control)
Circuit.
Digital Signal Processor. TGL = H: Gain Low
64 Vccl
f
VCC for RF Root
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