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The ENDAT-3203M/3220M System Board
5-2. UTP Cable / RJ-45 Jack Definition
Straight through twisted pair cable is typically used to connect a hub to a server or
workstation. In a straight through connection, Pin 1 at the server, Pin 2 at the hub connects to
Pin 2 at the server, and so on. Figure A-1 shows the locations of pins on a standard RJ-45 plug
on a twisted-pair cable.
Table A-1 shows the wiring in a straight-through twisted-pair cable (Pins 4, 5, 7 and 8 are not
used).
Twisted Pair
Number
Pin Number
Signal
Description
To
Pin
Number
Signal
Description
1
1
2
TD+
TD–
1
2
TD+
TD–
2
3
6
RD+
RD–
3
6
RD+
RD–
RJ-45 Connector Pin Assignments
Figure A-1 shows the RJ-45 Connector pin assignments
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