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Ethernet Cable Pinouts
Ethernet Cable Pinouts
Introduction This cable may have a maximum length of up to 100m and must conform to the
802.3 10BaseT specification, with a nominal impedance of 100 ohms. Category 3, 4,
or 5 cable may be used. Category 4 or 5 is preferred.
Additional
Information
Refer to ANSI/TIA/EIA 568A and the following references:
• CSMA/CD Access Method and Physical Layer Specifications, IEEE standard
802.3-1992.
• Draft supplement to IEEE standard 802.3, System Considerations for Multi
Segment 10B/S Baseband Networks (Chapter 13) and Medium Attachment
Unit and Baseband Medium Specification, Type 10BaseT (Chapter 14),
p802.3i-1990.
Ethernet RJ-45S
Connector Signals
The following table shows the Ethernet RJ-45S connector signals.
Ethernet DB-15
Connector Signals
The AIU cable uses male DB-15 to female DB-15 connectors with slide latches in a
straight-through connection.
The twisted pair combinations are 1/2, 3/6, and 4/5, and may be used for Ethernet.
This cable may have a maximum length of up to 50m and must conform to the 802.3
10BASE5 specification.
The following table shows the Ethernet DB-15 connector signals.
Pin Signal
1Transmit +
2Transmit -
3 Receive +
6 Receive -
Pin Signal
1Shield
2 Collision+
3Transmit+
4Shield
5 Receive+
6Ground
8Shield
9 Collision-
10 Transmit-
11 Shield