Aiwa TP-S90 Service Manual page 11

IC, LB1977M
1 OSC
2 COM
3 VS
4 GND
5 S/S
6 VREF
7 IN+
8 VSP
9 OUT
10 RI
11 FC
12 LB
13 HS
14 DR
15 BRAKE
16 VCC
17 MC
18 UOUT
19 VOUT
20 WOUT
21 P-GND
22 WB
23 VB
24 UB
I/O
–
O
I
–
I
–
I
O
O
–
–
–
–
I
I
–
O
O
O
O
–
–
–
–
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