5.3.2Connector pin assignment

Connector (cable side): Shielded plug

MOLEX 52316-3611 (shielded cover kit with latches) or equivalent Figure 5.7 shows the parallel interface connector.

1

18

19

36

(Cable side) (Male type)

Figure 5.7 Parallel interface connector (IEEE1284-C)

Signal definition:

Table 5.2 lists parallel interface signals and their functions.

 

 

 

 

 

Table 5.2

Parallel interface signals

 

 

 

 

 

 

 

 

 

 

Connector

Return

 

 

 

Signal

 

 

 

pin

line pin

Compati mode

 

Direction

Description

number

number

 

 

 

Nibble mode

 

 

 

 

 

 

 

 

 

 

 

 

 

1

19

Busy

 

Output

Data cannot be received when this signal is high,

 

 

 

 

 

 

 

 

 

e.g., if the buffer is full or an error occurs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Printer Busy

 

 

Reverse data transfer phase:

 

 

 

 

 

 

 

 

 

Data bit 3, data bit 7, then forward path (host to

 

 

 

 

 

 

 

 

 

printer) busy status

 

 

 

 

 

 

 

 

 

 

2

20

Select (SLCT)

 

Output

This signal goes high when the printer is selected

 

 

 

 

 

 

 

 

 

(online), and goes low when the printer is deselected

 

 

 

 

 

 

 

 

 

(offline).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X Flag

 

 

Reverse data transfer phase:

 

 

 

 

 

 

 

 

 

Data bit 1, then data bit 5

 

 

 

 

 

 

 

 

 

 

3

21

 

 

 

 

 

 

Output

• Pulse signal indicating data reception completed

Acknowledge

 

 

 

 

(ACK)

 

 

 

(or data reception enabled) status

 

 

 

 

 

 

 

 

 

• Issued when the printer switches from offline to

 

 

 

 

 

 

 

 

 

online

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Printer Clock

 

 

Reverse data transfer phase:

 

 

 

 

 

 

 

 

 

This signal goes high when data being sent to the

 

 

 

 

 

 

 

 

 

host is established.

 

 

 

 

 

 

 

 

 

Reverse idle phase:

 

 

 

 

 

 

 

 

 

This signal is set low then goes high to interrupt the

 

 

 

 

 

 

 

 

 

host, indicating that data is available.

 

 

 

 

 

 

 

 

 

 

5-8

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Fujitsu C145-C037-01EN manual Parallel interface connector IEEE1284-C