26-Pin Accessory Connector - Kenwood TK-2180 Modification Information

1 TERMINAL FUNCTION
1.2

26-pin Accessory Connector

Signal Input/
Pin.
Name Output
1 OPT1 Input/Output
2 OPT3 Input/Output
3 RXD1 Input
4 TXD1 Output
5 CK -
6 OPT4 Output
7 USEL Output
8 OPT5 Output
9 DGND -
10 AGND -
11 AI Input
12 AO Output
13 AGND -
5A Output
14
5E Output
15 STON Input
DI/ANI Input
16
DTI Input
TCONT Input
17
TCTL Input
Output
MAN DOWN
18
NC -
INH Input
19
AUDIH Input
20 OPT2 Input/Output
21 TXO Output
22 RXEO Output
23 RXEI Input
24 TXI Input
25 OPT6 Output
SB2 Output
26
8C Output
2
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V
Serial Data Input; L= less than 1.0V, H= more than 4.0V, TTL level
Serial Data Output/ PTT signal Output; L= less than 0.45V, H= more than 4.7V/25kohm, TTL level
Serial Clock Output (Not Available)
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
UART Speed Select Output; L=19200bps fixed, H: 115200 bps
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
Ground
Ground
VGS Audio Input; Zin= more than 10kohm, 1Vpp max Input Range 0 to 5V
VGS Audio Output; Zo=less than 10kohm
Ground
5V Power supply Output; 78mAmax (TK-2180/3180)
5V Power supply Output; 78mAmax (TK-7180/8180)
Side Tone Input; 1kHz 5Vpp
Data Signal Input; Zin=more than 22kohm, 600+/-200mVpp@STD (TK-2180/3180)
Data Signal Input; Zin=more than 22kohm, 600+/-200mVpp@STD (TK-7180/8180)
Speaker Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Range 0 to 5V (TK-2180/3180)
Speaker Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Range 0 to 5V (TK-7180/8180)
Man Down Output; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-2180/3180)
NC (TK-7180/8180)
Mic Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-2180/3180)
Mic Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-7180/8180)
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V
Mic Signal Output; ZL= more than 22kohm, 130+/-50mVpp, Before Pre-Emphasis, AC coupled
Audio Signal Output; ZL=more than 30kohm, 1+/-0.3Vpp, After De-Emphasis, DC coupled
Audio Signal Input; Zin=more than 15kohm, 1+/-0.3Vpp, After De-Emphasis, DC coupled
Mic Signal Input; Zin=more than 22kohm, 130+/-50mVpp, Before Pre-Emphasis, AC coupled
Output; L= less than 0.45V, H= more than 4.7V/25kohm load
Switched Battery power/ 7.5V typ, 100mAmax
8V AVR Output; 8.0V tpy, 100mAmax
Modification Information
The 26-pin connector is located on the main PCB inside
of the transceiver and you can connect external devices,
such as an optional board, to this connector.
Table 1-2 26-pin Accessory Connector Pin Assignment
Description
Version: 1.13 USA