LG GSA-4120B Service Manual page 64

IC601 (M63041AFP) : SPINDLE MOTOR AND 6CH ACTUATOR DRIVER
Block Diagram
M
For SPINDLE
7-13.2V
VM1
GND
SWICHING
Commutation
commutation
STTH
STARTER
CLK
Pin Function
No Pin name Function
1 SPIN Spindle control voltage input
2 SL1IN Slide control voltage input1
3 SL2IN Slide control voltage input2
4 SPLIM Input terminal for spindle current limit
5 VM2 Motor Power Supply 2(for Slide)
6 SL2+ Slide non-inverted output2
7 GND GND
8 SL2- Slide inverted output2
9 SL1+ Slide non-inverted output1
10 SL1- Slide inverted outptut1
11 GND GND
12 U Motor drive output U
13 V Motor drive output V
14 W Motor drive output W
15 ACTFLG Pickup protect flag output
16 OPOUT Operational amplifier output
17 OPIN- Operational amplifier inverted input *
18 SLLIM Input terminal for slide current limit
19 FG Frequency generator output
20 EN1 Input terminal for enable 1
21 EN2 Input terminal for enable 2
*1) Please connect 17terninal (OPIN-) to GND, when the OPamp is not used.
*2) Please connect 25terminal(ACTRST) to 5VCC, When the Pick-up protection circuit is not used.
67
Current gain
3A/V
PWM
CIRCUIT
Frequency
150KHz
TSD
FG(x3)
Reverse detect
6.4MHz
7-13.2V
For SLIDE
For/FO/TR/TILT
4.5-5.5V
Voltage gain Voltage gain
X12 X12
Current gain
0.44[0.88]A/V
CTL
CTL
Frequncy
75KHz
PWM
CIRCUIT
No Pin name Function
42 REF
41 LOIN
40 FOIN
39 TOIN
38 TLIN
37 TL-
36 TL+
35 FO-
34 FO+
33 GND
32 5VCC
31 TO+
30 TO-
29 GND
28 LO-
27 LO+
26 VM3
1
25 ACTRST*
24 STTH
23 SLGS
22 VM1
For LOADING
4.5-5.5V
7-13.2V
Voltage gain
X12
Current gain
0.44[0.88]A/V
Frequncy
75KHz
PWM
CIRCUIT
Reference voltage input
Loading control input
Focus control voltage input
Tracking control voltage input
Tilt control voltage input
Tilt inverted output
Tilt non-inverted output
Focus inverted output
Focus non-inverted output
GND
5V Power Supply (for FS,TS,TL)
Tracking non-inverted output
Tracking inverted output
GND
Loading inverted outptut
Loading non-inverted output
Power Supply3(for Loading)
2 Pickup protect Reset *
Reference voltage for spindle start up
Input terminal for gain select SL
Motor Power Supply 1(for Spindle)
M
H Bridge
OPOUT
OPIN-
SLGS
Gain Select(SL)
EN2
DSP
ENABLE
EN1
DSP
2