XV-N50BK,XV-N55SL
(No.A0041)1-29
4.5 BA6664FM-X (IC251) : Spindle motor driver
• Pin layout
• Block diagram
NC
A3
NC
A2
NC
NC
A1
GND
H1+
H1-
H2+
H2-
H3+
H3-
RNF
VM
GSW
Vcc
FG
PS
EC
ECR
FR
FG2
SB
CNF
BR
VH-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29
30
28
27
26
25
24
23
22
21
20
19
18
17
16
15
BRAKE MODE
Hall Bias
SHORT BRAKE
VH
BR
CNF
SB
FG2
FR
VCC
VCC
R
D Q
CK Q
ECR
EC
PS
FG
VCC
VCC
GSW
VM
R
NF
GAIN
SWITCH
2
4
7
8
9
10
11
12
13
14
H1+
H1-
H2+
H2-
H3+
H3-
+
-
+
-
+
-
+
-
+
-
+
-
TSD
PS
TOROUE
SENSE AMP
GAIN
CONTROL
+
-
+ -
DRIVER
HALL AMP
TL
A3
A2
A1
GND
CURRENT
SENSE AMP
Summary of Contents for XV-N50BK
Page 43: ...XV N50BK XV N55SL No A0041 1 43 ...
Page 51: ...XV N50BK XV N55SL 2 7 MEMO ...