Terminal Function - Kenwood TK-880 Service Manual

CN7 (TX-RX Unit A/2) ← → CN502 (TX-RX Unit B/2)
Pin No. Name
1 W/N
2 T/R
3 MO
4 TO
5 BEEP
6 8R
7 PSW
8 DEO
9 MM
10 AFO
11 ME
12 MI
13 AHK
14 IGN
15 SB
16 SB
17 8C
18 KEY
19 CK
20 DT
21 RSSI
22 LD
23 ES
24 EP
25 EN
26 APTT
27 CP
28 DTC
29 TXD
30 RXD
31 OE
32 FSW
33 E
98

TERMINAL FUNCTION

Function
Wide/Narrow. H : Wide
TX/RX switch. H : Receive
Modulation signal.
Low speed data signal.
Beep.
NC
Power switch.
Receive signal to control unit.
MIC mute. H : MIC mute
Receive signal from control unit.
MIC ground.
External MIC.
Hook signal. H : Off hook
Ignition signal.
13.2V.
13.2V.
8V.
TX signal.
Shift register clock.
PLL/Shift register/DA converter data.
RSSI.
PLL unlock detection.
Shift register enable.
PLL enable.
DA converter enable.
External PTT.
PLL clock.
Data control.
Serial data.
Serial data.
Serial data.
Foot switch.
Ground.
CN101 (VCO) ← → TX-RX Unit A/2
Pin No. Name
1 ST Switched transmit input. H : Transmit
2 HT RF output.
3 E Ground.
4 9CL 9V input.
5 8CL 8V input.
6 MD Modulation input.
7 CV Control voltage input.
CN501 (TX-RX Unit B/2)
Pin No. Name
1 E Ground.
2 5C Logic power (5V).
3 CS Chip selector signal. L : Option
4 CK Serial clock signal.
5 SID Serial data input.
6 (NC) Unused terminal.
7 (NC) Unused terminal.
8 LED(A) LED anode terminal.
9 LED(K) LED cathode terminal.
10 NC Unused terminal.
J501 (TX-RX Unit B/2)
Pin No. Name
1 BLC MIC key backlight control.
2 PSB 13.2V.
3 E Ground.
4 PTT/TXD PTT.
5 ME MIC ground.
6 MIC MIC signal input.
7 HOOK/RXD Hook detection
8 CM MIC data detection.
Function
Function
Function