Terminal Function; Tx-Rx Unit (X57-6940-10); Display Unit (X54-3470-Xx) - Kenwood TK-3180 Service Manual

Display unit (X54-3470-XX)

Pin No. Name I/O
CN507
1 SW2 O Key matrix output (Side2 key)
2 K1 I Key matrix input (Side key)
3 GND - GND
4 PTT I PTT input
5 SW1 O Key matrix output (Side1 key)
CN508
1 NC - Non connection
2 V5 O LCD driving voltage output
3 Vss - GND
4 V5OUT I Step up voltage input
5 C2- - Step up capacitor connecting terminal
6 C2+ - Step up capacitor connecting terminal
7 C1- - Step up capacitor connecting terminal
8 C1+ - Step up capacitor connecting terminal
9 Vci O Voltage converter power supply output
10 VDD O LCD power supply output
11 OSC1 - Non connection
12 OSC2 - Non connection
13 RESET O LCD reset output
14 P/S O GND
15 RS O Register select output
16 R/W O GND
17 SCL O Serial clock output
18 SIO O Serial data output
19 CS O Chip select output
20 Vss -
CN509
1 NC - Non connection
2 NC - Non connection
3 NC - Non connection
4 LCDRS I LCD RS input
5 AGND - GND
6 ME - Internal microphone ground
7 MIC O Internal microphone output
8 PTT O PTT output
9 SPSTB I Shift register storage enable input
10 CLK I Serial clock input
11 DATA I Serial data input
12 KI1 O Key matrix 1 output
13 KI2 O Key matrix 2 output

TERMINAL FUNCTION

Function
Pin No. Name I/O
14 NC - Non connection
15 SB2 I Power input after power switch
16 NC - Non connection
17 DGND - GND
18 LCDCS I LCD chip select input
19 LCDRST I LCD reset input
20 5M I 5V

TX-RX unit (X57-6940-10)

Pin No. Name I/O
CN400
1 SB1 I Power input after power switch
2 +B O Power output after passing through the fuse
3 EN3 I Encoder pulse input
4 EN4 I Encoder pulse input
5 DGND - GND
6 EN2 I Encoder pulse input
7 EN1 I Encoder pulse input
8 DGND - GND
9 VOL I Volume level input for audio control
10 5M O 5V
CN500
1 5M O 5V
2 LCDRST O LCD reset output
3 LCDCS O LCD chip select output
4 DGND - GND
5 NC - Non connection
6 SB2 O Power output after power switch
7 NC - Non connection
8 KI2 I Key matrix 2 input
9 KI1 I Key matrix 1 input
10 DATA O Serial data output
11 CLK O Serial clock output
12 SPSTB O Shift register storage enable output
13 PTT I PTT input
14 MIC I Internal microphone input
15 ME - Internal microphone ground
16 AGND - GND
17 LCDRS O LCD RS output
18 NC - Non connection
19 NC - Non connection
20 NC - Non connection
TK-3180
Function
Function
39