LG CED-8083B Service Manual page 64

IC510 (BA6664FM) : Spindle Motor Drive IC
It drives the spindle motor receiving the spindle control signal at IC301 (MICOM) and IC201 (OTI-9790).
Block Diagram
• Pin Description
Pin No. Pin Name
1 N.C.
A
2
3
N.C.
3
A
4
2
5 N.C.
6 N.C.
7 A
1
GND
8
H +
9
1
H -
10
1
11 H +
2
12 H -
2
13 H +
3
H
14 -
3
V
15
H
BR
16
17 C
NF
18 SB
19 FG
2
20 FR
E
21
CR
E
22
C
PS
23
24 FG
25 V
CC
26 GSN
V
27
M1
R
28
NF
FIN
FIN
DRIVER
GAIN
A3
CONTROL
2
A2
4 TL
A1
7
HALL AMP
+
GND
-
8
H1+
+
9 -
Hall 1
H1-
+
-
10
H2 +
+
11
-
Hall 2
H2 -
+
-
12
H3 +
+
13
-
Hall 3
H3 -
14
N.C.
Output3 for motor
N.C.
Output2 for motor
N.C.
N.C.
Output1 for motor
GND
Positive input for hall input Amp1.
Negative input for hall input Amp1.
Positive input for hall input Amp2.
Negative input for hall input Amp2.
Positive input for hall input Amp3.
Negative input for hall input Amp3.
Hall bias terminal
Brake Mode terminal
Capacitor connection pin for phase compensation
Short brake terminal
3 Phase synthesized FG signal output terminal
Rotation detect signal output terminal
Torque control standard voltage input terminal
Torque control voltage input terminal
START/STOP Switch
FG signal output terminal
Power supply for signal division
Gain Switch
Power supply for driver division
Resistance connection pin for output current sense
GND
R
NF
28
R
VM
TSD
27
GSW
GAIN
26
SWITCH
VCC
CURRENT
VCC
25
+
SENSE AMP -
FG
24
PS
P S
23
TORQUE
EC
SENSE AMP
22
+
-
ECR
21
VCC
FR
VCC
20
FG2
R
19
Q
D
CK Q SB
18
SHORT BRAKE
CNF
17
BR
BRAKE MODE
16
VH
Hall Bias
15
FIN
Description
NF
V
M
Vcc
SERVO
SIGNAL
47