原创 硬件接口定义规范-I

Pin<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Name

ITU-T

Dir

Description

1

GND

101

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" />

Shield Ground

2

TXD

103

Transmit Data

3

RXD

104

Receive Data

4

RTS

105

Request to Send

5

CTS

106

Clear to Send

6

DSR

107

Data Set Ready

7

GND

102

System Ground

8

CD

109

Carrier Detect

9

-

-

RESERVED

10

-

-

RESERVED

11

STF

126

Select Transmit Channel

12

S.CD

?

Secondary Carrier Detect

13

S.CTS

?

Secondary Clear to Send

14

S.TXD

?

Secondary Transmit Data

15

TCK

114

Transmission Signal Element Timing

16

S.RXD

?

Secondary Receive Data

17

RCK

115

Receiver Signal Element Timing

18

LL

141

Local <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Loop Control

19

S.RTS

?

Secondary Request to Send

20

DTR

108

Data Terminal Ready

21

RL

140

Remote Loop Control

22

RI

125

Ring Indicator

23

DSR

111

Data Signal Rate Selector

24

XCK

113

Transmit Signal Element Timing

25

TI

142

Test Indicator

Pin

Name

Dir

Description

1

CD

Carrier Detect

2

RXD

Receive Data

3

TXD

Transmit Data

4

DTR

Data Terminal Ready

5

GND

System Ground

6

DSR

Data Set Ready

7

RTS

Request to Send

8

CTS

Clear to Send

9

RI

Ring Indicator

Pin

Name

Dir

Description

1

/STROBE

Strobe

2

D0

Data Bit 0

3

D1

Data Bit 1

4

D2

Data Bit 2

5

D3

Data Bit 3

6

D4

Data Bit 4

7

D5

Data Bit 5

8

D6

Data Bit 6

9

D7

Data Bit 7

10

/ACK

Acknowledge

11

BUSY

Busy

12

PE

Paper End

13

SEL

Select

14

/AUTOFD

Autofeed

15

/ERROR

Error

16

/INIT

Initialize

17

/SELIN

Select In

18

GND

Signal Ground

19

GND

Signal Ground

20

GND

Signal Ground

21

GND

Signal Ground

22

GND

Signal Ground

23

GND

Signal Ground

24

GND

Signal Ground

25

GND

Signal Ground

Pin

Name

Dir

Description

1

DATA

Key Data

2

n/c

-

Not connected

3

GND

Gnd

4

VCC

Power , +5 VDC

5

CLK

Clock

6

n/c

-

Not connected

Pin

Name

Description

Technical

1

CLOCK

Clock

CLK/CTS, Open-collector

2

DATA

Data

RxD/TxD/RTS, Open-collector

3

n/c

Not connected

Reset on some very old keyboards.

4

GND

Ground

5

VCC

+5 VDC

Pin

Name

Description

1

TX+

Tranceive Data+ (发信号+)

2

TX-

Tranceive Data- (发信号-)

3

RX+

Receive Data+ (收信号+)

4

n/c

Not connected (空脚)

5

n/c

Not connected (空脚)

6

RX-

Receive Data- (收信号-)

7

n/c

Not connected (空脚)

8

n/c

Not connected (空脚)

Pin

Name

Dir

Description

1

/RESET

Reset

2

GND

Ground

3

DD7

Data 7

4

DD8

Data 8

5

DD6

Data 6

6

DD9

Data 9

7

DD5

Data 5

8

DD10

Data 10

9

DD4

Data 4

10

DD11

Data 11

11

DD3

Data 3

12

DD12

Data 12

13

DD2

Data 2

14

DD13

Data 13

15

DD1

Data 1

16

DD14

Data 14

17

DD0

Data 0

18

DD15

Data 15

19

GND

Ground

20

KEY

-

Key

21

n/c

-

Not connected

22

GND

Ground

23

/IOW

Write Strobe

24

GND

Ground

25

/IOR

Read Strobe

26

GND

Ground

27

IO_CH_RDY

28

ALE

Address Latch Enable

29

n/c

-

Not connected

30

GND

Ground

31

IRQR

Interrupt Request

32

/IOCS16

?

IO ChipSelect 16

33

DA1

Address 1

34

n/c

-

Not connected

35

DA0

Address 0

36

DA2

Address 2

37

/IDE_CS0

(1F0-1F7)

38

/IDE_CS1

(3F6-3F7)

39

/ACTIVE

Led driver

40

GND

Ground