TK-2180
13
Pin No.
Port Name
I/O
Function
1
VREF
-
+5V
2
AVCC
-
+5V
3
SBC
O
Switched B control
4
5RC
O
RX control
5
5TC
O
TX control
6
APC/TV2
O
TX APC adjust / TV adjust 2
7
HSDO
O
High speed data output
8
STSW
O
Side tone switch
9
RTCL/EEPCL
O
RTC/EEPROM clock
10
HSDIN
I
High speed data input
11
MAN-DN IN
I
Man down switch input
12
RTDT/EEPDAT
I/O
RTC/EEPROM data
13
BYTE
-
+5V
14
CNVSS
-
DGND (Vss)
15
DMUTE
O
Det mute
16
AM2
O
Audio mute 2
17
RST
I
Reset
18
Xout
O
11.0592MHz clock output
19
DGND
-
DGND (Vss)
20
Xin
I
11.0592MHz clock input
21
VCC1
-
+5V
22
NMI
-
+5V
23
PSW
I
Power switch input
24
INT
I
BATT voltage INT
25
INTRA
I
RTC INT
26
SHIFT/MODEL I/O
Beat shift / Model select
27
BEEP
O
Beep out
28
SPSTB
O
BU2099 storage enable
29
VCO ADJ
O
VCO adjust switch
30
LEDR
O
LED red
31
LEDG
O
LED green
32
DSTB
O
STB for DAC
33
LSDO
O
Low speed data output
34
KEY1
I
Key matrix 1 input
35
KEY2
I
Key matrix 2 input
36
TXD1
I/O
TXD1 and PTT (SC20-460)
37
Vcc1
-
+5V
38
RXD1
I
RXD1
39
DGND
-
DGND (Vss)
SEMICONDUCTOR DATA
Pin No.
Port Name
I/O
Function
40
MMUTE
O
Mic mute
41
AUX
I
AUX key
42
TXD
O
TXD (COM0)
43
RXD
I
RXD (COM0)
44
AFDAT
O
BB TDATA and DTRCLK
45
AFDIO
I/O
BB DI/O
46
AFDIR
O
BB DIR
47
DTRLOAD
O
BB DTMF enable
48
AFSTD
I
BB STD
49
LSW
O
BB LIM switch
50
RDY
-
+5V
51
NC
-
Non connection
52
HOLD
-
+5V
53
NC
-
Non connection
54~57
EN4~EN1
I
Encoder in 4~1
58
NC
O
Non connection
59
RD
O
Read (RD)
60
NC
O
Non connection
61
WR
O
Write (WR)
62
APCSW
O
APC switch output
63
DSW
O
APC voltage discharge switch
64
5UC
O
5U control
65
BTSE/VOX
O
BATT select / VOX input switch
66
LCDRST
O
LCD reset
67
LCDCS
O
LCD chip select
68
CS0
O
Chip select 0
69
NC
-
-
70~79
A18~A9
O
Address bus 18~9
80
UL
I
PLL unlock
81
PLE
O
PLL enable
82
PCK
O
PLL clock
83
NC
-
NC
84
OPT6
O
Option board I/F 6
85
VCC2
-
+5V
86
A8
O
Address bus 8
87
DGND
-
DGND (Vss)
88~95
A7~A0
O
Address bus 7~0
96
PTT
I
PTT input
97
AFRTM
I
BB RDF/FD
Microprocesser : M30625MGP (TX-RX unit IC502)