Bose CD-20 - Page 62

62
CD MECHANISM IC PIN CONFIGURATION TABLES
Pin
No.
I/O Terminal
Name
Description
52 I LIFTSW
B
Lift switch input
53 I COMDO
UT
Correspondence data output
54 NC
55 NC
56 NC
57 - Vpp Power supply of PROM writing
58 - Vdd Power supply (+5V)
59 I CDINOK CD mechanism in switch input
60 O CD+B Divider unit control signal
61 O SCL Clock output for S-RAM data reading
and writhing
62 I/O SDA S-RAM data input/output
63 NC
64 NC
IC 601 (uPD75116GF-K12) Microprocessor Table (continued)
IC 861 (BA6398FP) CD Driver and +5V Regulator Table
Pin
No.
I/O Terminal
Name
Description
1 O OUT+ Focus amp output (-)
2 O OUT - Focus amp output (+)
3 I IN Focus amp input
4- NC
5 O TR-B Regulator control
6 O VREG OUT Regulator control
7 I MUTE Mute control terminal (L: Mute)
8 - Vss GND
9- NC
10 I IN Sled amp input
11 O OUT - Sled amp output (-)
12 O OUT + Sled amp output (+)
13 - Vss GND
14 O OP OUT Op amp output
15 I OP IN - Op amp input (-)
16 I OP IN + Op amp input (+)
17 O OUT + Spindle amp output (+)
18 O OUT - Spindle amp output (-)
19 I IN Spindle amp input
20 - NC
21 - Vcc +8V
22 - Vcc +8V
23 I VREF Bias amp input
24 - NC
25 I IN Tracking amp input
26 O OUT - Tracking amp output (-)
27 O OUT + Tracking amp output (+)
28 - Vss GND