B&B Electronics EIR505-XX User Manual
Page 17
Manual Documentation Number: EIR505-xx_5107m
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B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
RJ-45 Pin Assignments
Pin Number
Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
All ports on this switch support automatic MDI/MDI-X operation.
Straight-through cables can be used for all network connections. In
straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are
connected straight through to pins 1, 2, 3 and 6 at the other end of the cable.
The table below shows the 10BASE-T/100BASE-TX MDI and MDI-X port
pin outs.
Pin MDI-X
Signal Name
MDI Signal Name
1
Receive Data plus (RD+)
Transmit Data plus (TD+)
2
Receive Data minus (RD-) Transmit Data minus (TD-)
3
Transmit Data plus (TD+)
Receive Data plus (RD+)
6
Transmit Data minus (TD-) Receive Data minus (RD-)
Straight Through Cable Schematic