Kenwood TK-480 User Manual

TK-480/481

■ Pin function

1

LSDOUT

O

Low speed data output.

2

HSDOUT

O

High speed data output.

3

HSDIN

I

Not used.

4

DTMSTD

I

DTMF decode IC data detect input.

5

SELF

I

Not used.

6

BYTE

I

+5V.

7

CNVSS

I

GND.

8

SFTOE

O

Shift register output enable.

9

LCDCS

O

LCD driver chip select output.

10

RESET

I

Microcomputer reset input.

11

XOUT

-

9.8304MHz (System clock).

12

VSS

-

GND.

13

XIN

-

9.8304MHz (System clock).

14

VCC

-

+5V

15

AUX

I

AUX switch input.

16

AFTRD

I

MSK modulation data output timing

pulse input.

17

AFRTM

I

MSK demodulation data input timing

pulse input.

18

EN2

I

Encoder pulse input 2.

19

PLLCLK

O

PLL IC clock output.

20

BEEP

O

Beep data output.

21

AFRDT

I

MSK demodulation data input.

22

AFREG1

O

AF IC register switching data output 1.

23

AFREG2

O

AF IC register switching data output 2.

24

EEPDAT

O

EEPROM data output.

25

DACSTB

O

D/A converter IC data strobe output.

26

AFCLR

O

MSK flame reset output.

27

SAVE

O

Not used.

28

LAMP

I

LAMP switch input.

29

AUXTXD

O

External Serial interface output.

30

AUXRXD

I

External Serial interface input.

31

PLLUL

I

PLL unlock detect input.

32

AFMSKE

O

MSK modulation enable (Enable active “H”).

33

TXD

O

Serial interface output (ex. PC).

34

RXD

I

Serial interface input (ex. PC).

35

AFDAT

O

MSK data output.

36

PTT

I

PTT switch input.

37

RDY

-

Not used.

38

ALE

-

Not used.

39

HOLD

-

Not used.

40

HLDA

-

Not used.

41

BLCK

-

Not used.

42

RD

-

Flash memory RD bus.

43

BHE

-

Not used.

44

WR

-

Flash memory WR bus.

45

DTMCLK

O

DTMF decode IC clock output.

46

CNTCLK

O

Common clock output.

47

PLLSTB

O

PLL IC data strobe output.

48

CS0

O

Flash memory chip enable.

49

A19

-

Not used.

50~59

A18~A9

-

Flash memory address bus.

60

VCC

-

+5V

61

A8

-

Flash memory address bus.

62

VSS

-

GND.

63~70

A7~A0

-

Flash memory address bus.

71

MONI

I

Monitor switch input.

72

EN4

I

Not used.

73

EN3

I

Not used.

74

EN1

I

Encoder pulse input 1.

75

MINDAT

O

Common data output.

76

KEY2

I

Key scan input 2.

77

KEY1

I

Key scan input 1.

78

RESET

O

Key scan IC reset output..

79~86

D7~D0

-

Flash memory data bus.

87

DTMDAT

I

DTMF decode IC data input.

88

PF

I

PF switch input.

89

VOL

I

Volume level input.

90

BATT

I

Battery voltage input.

91

ANLSQL

I

Squelch level input.

92

TEMP

I

Not used.

93

RSSI

I

Received signal strength indicator input

(RSSI).

94

AVSS

-

GND.

95

LSDIN

I

Low speed data input.

96

VREF

-

+5V

97

AVCC

-

+5V

98

SFTSTB1

O

Shift register data strobe output.

99

W/N

O

Not used.

100

AFSTB

O

AF IC data strobe output.