Rev 40672201TX

 

 

 

 

 

 

 

 

8)

4.

 

 

 

 

 

 

 

 

 

ofTable

 

1

Data Strobe

Printer

Negative

nStrobe

Host Clk

Data strobe

 

 

 

Pin No.

Signal Name

Signal Direction

Logic

Compatible

Nibble

Functions

 

 

 

 

 

 

 

 

 

 

 

 

parallel

 

2 - 9

Data Bit n

Printer

Positive

 

Data 1(LSB) - 8 (MSB)

Data line from/to host

 

 

 

 

 

 

10

Acknowledge

Printer

Negative

nAck

PtrClk

Completion of reception or function

 

 

 

11

Busy

Printer

Positive

Busy

PtrBusy

Data reception not possible

 

I/F

 

12

Paper End

Printer

Positive

PError

AckDataReq

No paper

 

 

 

signals

 

14

Auto Feed

Printer

Negative

nAutoFd

HostBusy

Mode switch request

 

 

13

Select

Printer

Positive

Select

Xflag

On-line

 

 

 

 

 

 

 

 

 

 

 

 

 

-A

15

-

-

-

 

Not defined

Not used

 

 

16

0V

-

-

 

Logic Gnd

Signal ground

 

 

22

 

 

 

 

 

 

 

 

 

 

17

Chassis Ground

-

-

 

Chassis Gnd

Frame ground

 

 

 

 

 

 

 

18

5V

Printer

-

 

Peripheral Logic High

Power supply (max. 50mA) (option)

 

 

 

19

0V

-

-

 

Signal Ground (nStrobe)

Signal ground

 

 

 

20 - 27

0V

-

-

 

Signal Ground (Data 1 - 8)

Signal ground

 

 

 

28

0V

-

-

 

Signal Ground (PError,Select, nAck)

Signal ground

 

 

 

 

29

0V

-

-

 

Signal Ground (Busy, nFault)

Signal ground

 

 

 

30

0V

-

-

 

Signal Ground (nAutoFd, nSelectIn, nInit)

Signal ground

 

 

 

31

Input Prime

Printer

Negative

nInit

nInit

Initialize

 

 

 

32

Fault

Printer

Negative

nFault

nDataAvail

Error occurrence, On-line

 

 

 

33

0V

-

-

 

Not Defined

Signal ground

 

 

 

34

-

-

-

 

Not Defined

Not used

 

 

 

 

35

-

Printer

-

 

Not Defined

Fixed to logic "1"

 

 

 

36

Select In

Printer

Negative

nSelectIn

1284 Active

Mode switch request