Optical disc ICs
!Input output circuit
Three-phase motor driver output
19
10
Spindle driver current detection input
51pin
20
18
11
9
17
Hall signal input
54pin
54pin
1
3
5
54pin
2
4
6
BD7902CFS
Hall bias
54pin
7
FG signal output
54pin
21
PWM driver output SLED1, 2
31 32
34
35
36
37
BTL driver output FO, TK
51pin
44pin
51pin
BTL driver output LD
51pin
51pin
51pin
45
46
49
50
47
48
33
BTL driver input FO, TK, LD
51pin
51pin
26
52
53
47kΩ
PWM driver input SLED1, 2
54pin
30pin
28
29
47kΩ
PWM driver input Spindle
54pin
54pin
24
15kΩ
Control signal reference voltage input
51pin
27
10kΩ 15kΩ
50kΩ
50kΩ
Control signal input
54pin
54pin
50kΩ
50kΩ
22
23
50kΩ
5/17