40
TK-480/481
CN No. Pin No.
Name I/O Function
TX-RX UNIT (X57-5630-XX) : TX-RX section
CN1 1 B O
Power input after passing through the fuse.
2B O
Power input after passing through the fuse.
3 SB I Power output after power switch.
4 SB I Power output after power switch.
5 5M O 5V.
6 VOL I Volume level input for audio control.
7E – GND
8 EN2 I Encoder pulse input.
9E – GND
10 EN1 I Encoder pulse input.
CN2 1 MON I
Normally;5V, MON when connected GND.
for X54-
2 LAMP I
Normally;5V, LAMP when connected GND.
SW 3 PTT I
Normally;5V, transmit when connected GND.
section
4 GND – GND
CN3 1 AF O Audio output.
2 AFE – Audio GND.
for 3 NC – Not use.
X54- 4 PF I External PF signal input.
Display
5 CK O Clock data output.
unit 6 RXD I Serial control signal input.
7 TXD O Serial control signal output.
8DT O
Data output for LCD driver/decade counter.
9 KRS O Key scan IC reset output.
10 KI1 I KEY input
11 KI2 I KEY input
12 GND - GND
13 5M O 5V.
14 AM O Audio mute signal output.
Mute:”L”, Unmute:”H”
15 CS O LCD driver chip select output.
16 NC – Not use.
17 PTT I PTT signal input.
18 AUX I AUX key input.
19 LR O
TX LED control. Normally:0V, lighting:5V.
20 LG O
RX LED control. Normally:0V, lighting:5V.
21 LBL O Backlight LED control.
Normally:0V, lighting:5V.
22 ME – MIC GND.
23 MIC I MIC signal input.
24 SB O Power output after power switch.
DISPLAY UNIT (X54-3210-XX A/2) : DISPLAY section
CN300
1 SB I Power input after power switch.
2 MIC O MIC signal output.
for 3 ME – MIC GND.
X57- 4 LBL I Backlight LED control.
TX-RX Normally:0V, lighting:5V.
unit 5 LG I
RX LED control. Normally:0V, lighting:5V.
6LR I
TX LED control. Normally:0V, lighting:5V.
7 AUX O AUX key output.
CN No. Pin No.
Name I/O Function
8 PTT O PTT signal output.
9NC – Not use.
10 CS I LCD driver chip select input.
11 AM I Audio mute signal input.
Mute:”L”, Unmute:”H”
12 5M I 5V.
13 GND – GND
14 KI2 O KEY output
15 KI1 O KEY output
16 KRS I Key scan IC reset input
17 DT I
Data input for LCD driver/decade counter.
18 TXD I Serial control signal input.
19 RXD O Serial control signal output.
20 CK I Clock data input.
21 PF O External PF signal output.
22 NC – Not use.
23 AFE – Audio GND.
24 AF I Audio input.
CN301
1 SSW I EXT/INT speaker switch input.
2 SP+ O BTL output + for external speaker.
3 SP- O BTL output - for external speaker.
4 MSW I EXT/INT MIC switch input.
5 EMC I External microphone input.
6ME – External microphone ground.
7 PTT I External PTT input.
8 PF I Programmable function key input.
9NC – Not use.
10 E – GND
11 5M O 5V output
12 TXD O Serial data output.
13 RXD I Serial data input.
14 NC – Not use
CN302
1 SP O Output for internal speaker.
2E – GND
CN304
1NC – Not use.
2 LEDK I Backlight LED control.
3 LEDA O Backlight LED control.
4 VCI O LCD power supply.
5 SOD O Serial data output for LCD driver.
6 SID I Serial data input for LCD driver.
7 SCLK O Clock data output for LCD driver.
8 CS O LCD driver chip select output.
9 Vcc O 5V
10 GND – GND
DISPLAY UNIT (X54-3210-XX B/2) : SW section
CN303
1 MON O
Normally;5V, MON when connected GND.
for x57-
2 LAMP O
Normally;5V, LAMP when connected GND.
TX-RX 3 PTT O
Normally;5V, transmit when connected GND.
unit 4 GND – GND
TERMINAL FUNCTION
