-
4 -
In MDI/MDI-X, 100/1000Base-TX PIN defines is as follows:
PIN
MDI
MDI-X
1
BI_DA+/TX+
BI_DB+/RX+
2
BI_DA-/TX-
BI_DB-/RX-
3
BI_DB+/RX+
BI_DA+/TX+
4
BI_DC+/
—
BI_DD+/
—
5
BI_DC-/
—
BI_DD-/
—
6
BI_DB-/RX-
BI_DA-/TX-
7
BI_DD+/
—
BI_DC+/
—
8
BI_DD-/
—
BI_DC-/
—
Note
:
10Base-T/100Base-TX, “TX
±
”transmit data
±
, “RX
±
”receive data
±
, “
—
”not use.
10/100Base-T(X) MDI (straight-through cable)
10/100Base-T(X) MDI-X (Cross-over cable)
Gigabit MDI (straight-through cable)
1
8
