3. Making Network Connections
3.1 Dual-speed Twisted-pair Ports
Figure 3-1 16 Dual-speed TP Ports
The hub provides 16 dual-speed TP ports. Each can support one con- nection to either a 10BASE-T Ethernet device or a 100BASE-TX Fast Ethernet device using 2-pair UTP cable.
RJ-45 Connectors
Each of Port #1 to Port #15 provides one RJ-45 connector, which are implemented as MDI-X jack. An MDI-X jack is designed with internal crossover function. The function allows a connection to a computer us- ing straight-through UTP cable. The Port #16 provides one MDI-X RJ- 45 connector and one MDI-I RJ-45 connector. Only one connector can be used at the same time.
The pin definitions for MDI-X jack and MDI-I jack are as follows:
PIN# | MDI-X Jack | MDI-I Jack |
1 | Rx+ | | Tx+ |
2 | Rx- | Tx- |
3 | Tx+ | Rx+ |
6 | Tx- | Rx- |
4,5,7,8 | NC | NC |
