AIWA RF-M60YU
Service Manual

IC BLOCK DIAGRAM
IC, KS57C0301
P0.0 /CLO P0.1 /TIO P0.2 /INT1 RESET BASIC TIMER INERRUPT CONTROL BLOCK WATCH TIMER INTERNAL INTERRUPTS P2.0-P2.3 P3.0 /SCK P3.1 /SO P3.2 /SI P3.3 /BUZ I/O PORT 2 I/O PORT 3 ARITHMETIC LOGIC UNIT FLAGS SERIAL I/O PORT P1.0 /KS0 /CIN0 P1.1 /KS1 /CIN1 P1.2 /KS2 /CIN2 P1.3 /KS3 /CIN3 I/O PORT 1 INSTRUCTION DECODER CLOCK STACK POINTER 8-BIT TIMER/ COUNTER XIN XOUT I/O PORT 0

PROGRAM COUNTER

PROGRAM STATUS WORD

COMPARATOR

256 x 4-BIT DATA MEMORY

2-KBYTE PROGRAM MEMORY

P0.0/CLO 1 P0.1/TIO 2 P0.2/INT1 3 P1.0/KS0/CIN0 4 P1.1/KS1/CIN1 5 P1.2/KS2/CIN2 6 P1.3/KS3/CIN3 7 XOUT 8 XIN 9 VSS 10

20 VDD 19 P3.3/BUZ 18 P3.2/SI 17 P3.1/SO

KS57C0301 (Top view)

16 P3.0/SCK 15 P2.3 14 P2.2 13 P2.1 12 P2.0 11 RESET

NOTE: Pin assignments are identical for the 20-pin DIP and SOP package.

IC, NJM2035
2-CH IN PUT 14 NC 13 12 TRIMMING 11 V+ 10 MPX OUT PUT 9 PILOT OUT PUT 8

2CH AMP TIME DIVISION MPX 1CH AMP Q

BUFFER

DIVIDER

19K

Q BUFFER 38K OSC AMP

1 1-CH IN PUT

2 NC

3 AC BYPASS

4 GND

5 AC BYPASS

6 YO CRYSTAL

7 TO CAPACITOR

8