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2.2.3 UT-600X 10/100M Ethernet Port PIN Assignment (RJ45)
2.3 Ethernet Port Definition
10/100BaseT(X) Ethernet port
10/100BaseT (X) Ethernet port is located in the front panel of the device; the interface type is RJ45,
the pin distribution of RJ45 port is defined as below figure. It adopts unshielded twisted pair (UTP) or
shielded twisted pair (STP) for connection, the distance should be less than 100m. 100Mbps
connection adopts 100 Ω line cat.5, and 10Mbps connection adopts 100 Ω cat.3, cat.4, cat.5.
The RJ45 port supports auto MDI/MDI-X. For MDI connection, pins 1, 2, 3 and 6 are connected
accordingly. For MDI-X port of serial device server, it adopts cross line: 1→3, 2→6, 3→1, 6→2. The
10Base-T/100Base-TX pin definitions in MDI/MDI-X applications are shown as below:
MDI-X: (Direct line)
RJ45
EIA/TIA 568B
Desc
EIA/TIA 568B
1
Orange
white
TX+
TX+
2
Orange
TX-
TX-
3
Green
white
RX+
RX+
4
Blue
Data+
Data+
5
Blue
white
Data-
Data-
6
Green
RX-
RX-
7
Brown
white
Data+
Data+
8
Brown
Data-
Data-
PIN
MDI
MDI-X
1
TX+
RX+
2
TX-
RX-
3
RX+
TX+
6
RX-
TX-
4, 5, 7, 8
—
—
1
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