OKI 6ex Manual De Usuario

OKI

A - 2

3)

Table of parallel I/F signals

Pin No.

1

2-9

10

11

12

13

14

15

16

17

18

19

20-27

28

29

30

31

32

33

34

35

36

Signal Name

Data Strobe

Data Bit n

Acknowledge

Busy

Paper End

Select

Auto Feed

—

0V

Chassis Groud

5V

0V

0V

0V

0V

0V

Input Prime

Fault

0V

—

—

Select In

Signal Direction

→

Printer

↔

Printer

Printer

→

Printer

→

Printer

→

Printer

→

→

Printer

—

—

—

Printer

→

—

—

—

—

—

→

Printer

Printer

→

—

—

Printer

→

→

Printer

Logic

Negative

Positive

Negative

Positive

Positive

Positive

Negative

—

—

—

—

—

—

—

—

—

Negative

Negative

—

—

—

Negative

Functions

Data strobe

Data line from/to host

Completion of reception or function

Data reception not possible

No paper

On-line

Mode switch request

Not used

Signal groud

Frame ground

Power supply (max. 50mA)

Signal ground

Signal groud

Signal Groud

Signal groud

Signal groud

Initialize

Error occurrrence, On-line

Signal groud

Not used

Fixed to logic "1"

Mode switch request

Nibble

Host Clk

Data 1(LSB) ~ 8(MSB)

PtrClk

PtrBusy

AckDataReq

Xllag

HostBusy

Not definend

Logic Gnd

Chassis Gnd

Peripheral Logic High

Signal Ground (nStrobe)

Signal Ground (Data 1~ 8)

Signal Ground (PError, Select, nAck)

Signal Ground (Busy, nFault)

Signal Ground (nAutoFd, nSelectln, nlnit)

Not Defined

Not Defined

Not Defined

nlnit

nDataAvail

nReverseRequest

nPeriphRequest

1284 Active

1284 Active

ECP

HostClk

PeriphClk

PeriphAck

nAckReverse

Xflag

HostAck

Compatible

nStrobe

nAck

Busy

PError

Select

nAutoFd

nlnit

nFault

nSelectln