Chapter 5 IEEE 1284 Parallel Interface

Table 10. 1284 Signals (continued)

 

 

 

Type of Mode

 

Pin

Source of Data

 

 

 

Compatible

Nibble

Byte

 

 

 

 

 

 

 

 

 

 

 

19

 

Signal Ground (nStrobe)

 

 

 

 

 

20

 

Signal Ground (Data 1)

 

 

 

 

 

21

 

Signal Ground (Data 2)

 

 

 

 

 

22

 

Signal Ground (Data 3)

 

 

 

 

 

23

 

Signal Ground (Data 4)

 

 

 

 

 

24

 

Signal Ground (Data 5)

 

 

 

 

 

25

 

Signal Ground (Data 6)

 

 

 

 

 

26

 

Signal Ground (Data 7)

 

 

 

 

 

27

 

Signal Ground (Data 8)

 

 

 

 

28

 

Signal Ground (PError, Select, nAck)

 

 

 

 

29

 

Signal Ground (Busy, nFault)

 

 

 

 

30

 

Signal Ground (nAutoFd, nSelectIn, nInit)

 

 

 

 

 

31

Host

nInit

 

 

 

 

 

 

 

32

Printer

NFault

nDataAvail

aDataAvail

 

 

 

 

 

33

 

Not Defined

 

 

 

 

 

 

 

34

 

Not Defined

 

 

 

 

 

 

 

35

 

Not Defined

 

 

 

 

 

 

 

36

Host

nSelectIn

1284 Active

1284 Active

 

 

 

 

 

NOTE: The length of the data cable from the host computer to the printer should not exceed 32 feet (10 meters).

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