TK-3180
41
Pin No.
Name
I/O
Function
5
EMC
I
External MIC input
Impedance : 1.8k
Ω
typ (at 1kHz)
Audio level : 7.5
±
2.5mVrms for 60% of
system deviation
Nominal DC voltage : 5.0
±
1V DC
6
ME
-
External MIC GND
7
PTT
I
External PTT input
L : PTT ON
8
PF
I
Programmable function key input
Input voltage : 0V~5.0V
Input level : 4.4V~5.0V (None), 3.1V~4.4V
(PF2 key ON), 2.3V~3.1V (PF1 key ON), 0V~
2.3V (PF1,PF2 key ON) (Pull up to 5V 10k
Ω
)
9
OPT
-
Non connection
10
E
-
GND
11
5U
O
5V power supply output
Max output current : 140mA
12
TXD
O
Serial data output
L
≤
0.45V, H
≥
4.7V/25k
Ω
load
Baud rate : 115200bps max
13
RXD
I
Serial data input
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
Baud rate : 57600bps max
14
NC (E)
-
Not use (GND)
Solder pad
Name
I/O
Function
OPT5
O
Option boad I/F 5
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
OPT6
O
Option boad I/F 6
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
OPT3
I/O
Option boad I/F 3
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
OPT1
O
Option boad I/F 1
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
Name
I/O
Function
RXD
I
Serial data input
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
TXD
O
Serial data output
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
RXI
I
Audio signal input (DC coupled) before de-emphasis
STON
I
Side tone input
1kHz, 5Vp-p
TCONT
I
Speaker mute signal input
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
TXO
O
MIC signal output (AC coupled) before pre-emphasis
ZL
≥
22k
Ω
, 130
±
50mVp-p
RXEO
O
Audio signal output (DC coupled) after de-emphasis
ZL
≥
30k
Ω
, 1
±
0.3Vp-p
OPT2
I/O
Option boad I/F 2
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
OPT4
O
Option boad I/F 4
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
GND
-
GND
SB2
I
Power input after power switch
7.5V typ, 100mA max
RXEI
I
Audio signal input (DC coupled) after de-emphasis
Zin
≥
15k
Ω
, 1
±
0.3Vp-p
TXI
I
MIC signal input (AC coupled) before pre-emphasis
Zin
≥
22k
Ω
, 130
±
50mVp-p
RXO
O
Audio signal output (DC coupled) before de-emphasis
5A
O
5V power supply output
78mA max
DI/ANI
I
Data signal input
Zin
≥
22k
Ω
, 600
±
200mVp-p
INH
O
MIC mute signal input
RSSI
O
RSSI output
Zo=56k
Ω
MDSW
I
Man down switch input
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
GND
-
GND for man down switch
RXD1
I
Serial data input
Input : L
≤
1.0V, H
≥
4.0V, Input voltage : 0V~5.0V
TXD1
O
Serial data output / PTT signal output (SC20-460)
Output : L
≤
0.45V, H
≥
4.7V/25k
Ω
load
TERMINAL FUNCTION