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IC603 (BA6792-Y) : Sled Motor/Loading Motor Control Drive IC
It controls the sled movement and takes the tray to open/close in track search mode.
IC604 (BA6792-Y) : Focus/Tracking Actuator Control Drive IC
This Drive IC controls the Focus/Tracking Actuator receiving the focus error or tracking error signal
from IC301.
Block Diagram
25
24
23
-
V / I
Vcc/2
Vcc/2
-
+
1
2
3
Pin Description
Pin No.
Pin Name
1
N.C.
No connecion
2
OUT
-
Driver CH1 negative output
1
3
OUT
+
Driver CH1 positive output
1
4
N.C.
No connection
5
V
CC
V
CC
6
GND
Substrate Ground
7
N.C.
No connection
8
GND
Substrate Ground
9
V
CC
V
CC
10
N.C.
No connection
11
OUT
+
Driver CH2 positive output
2
12
OUT
-
Driver CH2 negative output
2
13
N.C.
No connection
3
NOTE) 1. Symbol of + and - (output of DRIVERS) means polarity to input pin. (For example if voltage of pin 26
is high, pin 3 is high.)
2. Radiation pins short-circuit with pin 8 inside.
22
21
20
MUTE
+
Vcc/2
-
+
4
5
6
Function
19
T.
S.
D
7
8
Pin No.
Pin Name
14
N.C.
°Ø
15
IN
2
16
IN
2
17
N.C.
18
N.C.
19
BIAS
20
MUTE
21
N.C.
22
N.C.
23
IN
1
24
°Ø
IN
1
25
N.C.
18
17
16
15
-
+
V / I
Vcc/2
Vcc/2
Vcc/2
-
-
+
+
9
10
11
12
Function
No connection
CH2 input, gain adjustment pin
Driver CH2 input
No connection
No connection
Bias amplifier input
Driver mute control input
No connection
No connection
Driver CH1 input
CH1 input, gain adjustment pin
No connection
14
13
39
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