TKR-750
18
■
Pin Function
Pin No.
Name
I/O
Function
1
IO5
I/O
Aux I/O No.5 (Acc D-sub 25 pin)
2
IO4
I/O
Aux I/O No.4 (Acc D-sub 25 pin)
3
5TN
I
5-tone input
4
IO2
I/O
Aux I/O No.2 (Acc D-sub 25 pin)
5
IO1
I/O
Aux I/O No.1 (Acc D-sub 25 pin)
6
BYTE
–
5V
7
CNVss
–
GND
8
ENT
O
TX PLL IC enable
9
ENR
O
RX PLL IC enable
10
Reset
I
Microcomputer reset input
11
Xout
–
14.7456MHz
12
Vss
–
GND
13
Xin
–
14.7456MHz
14
Vcc
–
5V
15
NMI
–
Not used
16
BUP
I
Backup battery detect
H : Backup, L : Main
17
TEMP
I
Temperature detect for fan action
H : Temp high, L : Temp low
18
INTy
I
INT request from DSP
19
CLK
O
Common clock
20
DAT
O
Common data
21
SFT
O
Beat shift
H : On, L : Off
22
LD1
O
Control D/A converter LD
23
IO3
I/O
Aux I/O No.3 (Acc D-sub 25 pin)
24
BEEP
O
Beep output
25
LD2
O
D/A converter 2LD
26
RS
O
DSP reset
H : Off, L : On
27
EPTT
O
Acc PTT (Acc D-sub 25 pin)
H : Off, L : On
28
PTT
I
Mic PTT
H : Off, L : On
29
TXD1
O
Mic TXD
30
RXD1
I
Mic HOOK/RXD
31
SCLK
O
EEPROM clock
32
SDAT
I/O
EEPROM data
33
TXD0
O
Acc TXD (Acc D-sub 25 pin)
34
RXD0
I
Acc RXD (Acc D-sub 25 pin)
35
CP
O
PLL IC clock
36
DP
O
PLL IC data
37
RDY
I
CPU ready input
Pin No.
Name
I/O
Function
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
H : Off, L : On
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)
SEMICONDUCTOR DATA
Main CPU : 30622M4A-487GP (TX-RX unit IC604)
