Semiconductor Data - Kenwood TKR-850 Service Manual

TKR-850
Main CPU : 30622M4A-487GP (TX-RX unit IC604)
■ Pin Function
Pin No. Name I/O
1 IO5 I/O
2 IO4 I/O
3 5TN I
4 IO2 I/O
5 IO1 I/O
6 BYTE –
7 CNVss –
8 ENT O
9 ENR O
10 Reset I
11 Xout –
12 Vss –
13 Xin –
14 Vcc –
15 NMI –
16 BUP I
17 TEMP I
18 INTy I
19 CLK O
20 DAT O
21 SFT O
22 LD1 O
23 IO3 I/O
24 BEEP O
25 LD2 O
26 RS O
27 EPTT O
28 PTT I
29 TXD1 O
30 RXD1 I
31 SCLK O
32 SDAT I/O
33 TXD0 O
34 RXD0 I
35 CP O
36 DP O
37 RDY I
18

SEMICONDUCTOR DATA

Function
Aux I/O No.5 (Acc D-sub 25 pin)
Aux I/O No.4 (Acc D-sub 25 pin)
5-tone input
Aux I/O No.2 (Acc D-sub 25 pin)
Aux I/O No.1 (Acc D-sub 25 pin)
5V
GND
TX PLL IC enable
RX PLL IC enable
Microcomputer reset input
14.7456MHz
GND
14.7456MHz
5V
Not used
Backup battery detect
H : Backup, L : Main
Temperature detect for fan action
H : Temp high, L : Temp low
INT request from DSP
Common clock
Common data
Beat shift H : On, L : Off
Control D/A converter LD
Aux I/O No.3 (Acc D-sub 25 pin)
Beep output
D/A converter 2LD
DSP reset H : Off, L : On
Acc PTT (Acc D-sub 25 pin)
H : Off, L : On
Mic PTT H : Off, L : On
Mic TXD
Mic HOOK/RXD
EEPROM clock
EEPROM data
Acc TXD (Acc D-sub 25 pin)
Acc RXD (Acc D-sub 25 pin)
PLL IC clock
PLL IC data
CPU ready input
Pin No. Name I/O
38 ALE – Not used
39 HOLD – Not used
40 HLDA – Not used
41 BCLK O Not used
42 RD O Flash ROM WR/DSP HDS1
43 BHE – Not used
44 WR O Flash ROM WR/DSP HDS2
45 STB2 O Control shift register STB
46 INTx O DSP interrupt
47 HCS O DSP HCS
48 CS0 O Flash ROM CS
49 A19 O Not used
50~59 A18~A9 O Flash ROM address bus
60 Vcc – 5V
61 A8 O Flash ROM address bus
62 Vss – GND
63~70 A7~A0 O Flash ROM address bus
71 EMON I Acc monitor (Acc D-sub 25 pin)
H : Off, L : On
72 LDR I RX VCO lock detect
H : Lock, L : Unlock
73 LDT I TX VCO lock detect
H : Lock, L : Unlock
74,75 KEY5,KEY4 O Key matrix output
76~78 KEY3~KEY1 I Key matrix input
79~86 D7~D0 I/O Flash ROM data bus
87 FWD I RF power down level input
88 RSSI I RSSI level input
89 ASQ I Squelch level input
90 VLI I Volume level input
91 BATT I Power supply voltage level input
92 AI1 I Aux input No.1 (Acc D-sub 25 pin)
93 AI2 I Aux input No.2 (Acc D-sub 25 pin)
94 AVss – GND
95 AI3 I Aux input No.3 (Acc D-sub 25 pin)
96 Vref – 5V
97 AVcc – 5V
98 STB1 O Display shift register STB
99 SOE O Shift register common OE
100 IO6 I/O Aux I/O No.6 (Acc D-sub 25 pin)
Function
H : Off, L : On