Accton Technology 1000BASE-LX Guide d'installation télécharger pdf (Page 59)

B-3

Twisted-Pair Cable and Pin Assignments

You must connect all four wire pairs as shown in the following diagram to support

Gigabit Ethernet connections.

Figure B-3 Crossover Wiring

1000BASE-T Pin Assignments

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use

straight-through cables for all network connections to PCs or servers, or to other

switches or hubs.

The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports

require that all four pairs of wires be connected. Note that for 1000BASE-T

operation, all four pairs of wires are used for both transmit and receive.

Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded

twisted-pair (STP) cable for 1000BASE-T connections. Also be sure

that the length

of any twisted-pair connection does not exceed 100 meters (328 feet)

Table B-2 1000BASE-T MDI and MDI-X Port Pinouts

Pin MDI Signal Name MDI-X Signal Name

1 Bi-directional Pair A Plus (BI_DA+) Bi-directional Pair B Plus (BI_DB+)

2 Bi-directional Pair A Minus (BI_DA-) Bi-directional Pair B Minus (BI_DB-)

3 Bi-directional Pair B Plus (BI_DB+) Bi-directional Pair A Plus (BI_DA+)

4 Bi-directional Pair C Plus (BI_DC+) Bi-directional Pair D Plus (BI_DD+)

5 Bi-directional Pair C Minus (BI_DC-) Bi-directional Pair D Minus (BI_DD-)

6 Bi-directional Pair B Minus (BI_DB-) Bi-directional Pair A Minus (BI_DA-)

7 Bi-directional Pair D Plus (BI_DD+) Bi-directional Pair C Plus (BI_DC+)

8 Bi-directional Pair D Minus (BI_DD-) Bi-directional Pair C Minus (BI_DC-)

White/Orange Stripe

Orange

White/Green Stripe

EIA/TIA 568B RJ-45 Wiring Standard

10/100BASE-TX Crossover Cable

End A

End B

Green

Blue

White/Blue Stripe

Brown

White/Brown Stripe

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 75 76

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Accton Technology 1000BASE-LX Guide d'installation Page 59