Kenwood TK-90 Service Manual page 117

TK-90
3. Semiconductor Data
3-1. Microprocessor: 3062LFGPUKBNA (IC1)
Pin No. Port Name
1~3 P94~P92
4 BAUD
5 SQC
6 BYTE
7 CNVSS/(WCNV)
8 SSEL1
9 P86
10 RESET/(WRST)
11 XOUT
12 VSS
13 XIN
14 VCC1
15 NMI
16 INTRA
17 HINT
18 RXDINT
19,20 P81,P80
21 DINT
22 DRST
23~26 YOBI1~YOBI4
27 RTCL/EEPCL
28 RTDT/EEPDT
29 WTXD
30 WRXD
31 WCLK
32 WBSY
33 TXD0
34 RXD0
35 RTS0
36 CTS0
37 HRDY
38 ALE
39 HOLD/(WEPM)
40 HLDA
41 BCLK
42 RD
43 BHE
44 WR/(WCE)
45 HCS
46,47 CS2,CS1
48 SCS
49,50 A19,A18
120
KPE-2 (ALE UNIT /
I/O Function
O NC
I Baud rate selection
I Squelch input
I 3.3V
I Not used
I Not used
O NC
I Reset input
O Main clock output
- GND
I Main clock input
- VCC
I Not used
I RTC interrupt input
I DSP host port interrupt input
I RXD interrupt input
O Not used
O DSP interrupt output
O DSP reset output
O NC
O RTC/EEPROM Clock
I/O RTC/EEPROM Data
I Not used
I Not used
I Not used
I Not used
O Serial communications with main MCU
I Serial communications with main MCU
O Serial communications with main MCU
I Serial communications with main MCU
I DSP wait signal
O NC
I Not used
O NC
O CPU clock output (TP)
O Read signal
O Not used
O Write signal
O DSP chip select
I Not used
O SRAM chip select
O Address bus (OPEN)
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