Signals – Printronix T4204 User Manual

Page 181

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Signals

181

Signals

Table 9 lists each of the signals associated with the corresponding pins on the
IEEE 1284 interface. Descriptions of the signals follow.

Table 9. IEEE 1284 Signals

Pin

Source of Data

Type of Mode

Compatible

Nibble

Byte

1

Host

nStrobe

HostClk

Host/Clk

2

Host/Printer

Data 1 (LSB)

3

Host/Printer

Data 2

4

Host/Printer

Data 3

5

Host/Printer

Data 4

6

Host/Printer

Data 5

7

Host/Printer

Data 6

8

Host/Printer

Data 7

9

Host/Printer

Data 8 (MSB)

10

Printer

nAck

PtrClk

PtrClk

11

Printer

Busy

PtrBusy

PtrBusy

12

Printer

PError

AckDataReq

AckDataReq

13

Printer

Select

Xflag

Xflag

14

Host

nAutoFd

Host Busy

HostAck

15

Not Defined

16

Logic Grid

17

Chassis Grid

18

Printer

Peripheral Logic High

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)

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