Kenwood TK-480 User Manual

TK-480/481

CN1

1

B

O

Power input after passing through the fuse.

2

B

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.

7

E

–

GND

8

EN2

I

Encoder pulse input.

9

E

–

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.

8

DT

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.

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.

6

LR

I

TX LED control. Normally:0V, lighting:5V.

7

AUX

O

AUX key output.

8

PTT

O

PTT signal output.

9

NC

–

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.

6

ME

–

External microphone ground.

7

PTT

I

External PTT input.

8

PF

I

Programmable function key input.

9

NC

–

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.

2

E

–

GND

CN304

1

NC

–

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

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