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A.5 reference for the parallel port connector – Sun Microsystems 220R User Manual

Page 240

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Pin

Signal Name

Description

66

Dat<9>_

Data 9

67

Dat<10>_

Data 10

68

Dat<11>_

Data 11

A.5

Reference for the Parallel Port Connector

The parallel port connector is a DB-25 type connector located on the main logic
board back panel.

A.5.1

Parallel Port Connector Diagram

A.5.2

Parallel Port Signals

Pin

Mnemonic

Signal Name

Description

1

Data_Strobe_L

Data Strobe
Low

Set low during forward channel
transfers to latch data into
peripheral device. Set high during
reverse channel transfers.

2 to 9

Data[0..7]

Data0 Through
Data7

The main data bus for the parallel
port. Data0 is the least significant
bit (LSB). Are not used during
reverse channel transfers.

240

Sun Enterprise 220R Server Service Manual

January 2000, Revision A