Ethernet Ports
7-5
7.5 Ethernet Ports
The BajaPPC-750 has a versatile Ethernet interface. It supports full-duplex opera-
tion on either a 10/100Mb/s Fast Ethernet port or a 10Mb/s AUI port. The follow-
ing sections describe these ports.
7.5.1 Fast Ethernet
The Intel 21143 media-independent interface (MII) and ICS 1890 PHY device sup-
port 10/100Mb/s communications for the Fast Ethernet port, which is available at
the P3 connector on the front panel. The pin assignments for P3 are given below:
Figure 7-1. Fast Ethernet Connector (P3, RJ45)
7.5.2 AUI Ethernet
The BajaPPC-750 provides for an additional Ethernet interface at VMEbus con-
nector P2 (see Tables 6-9 and 6-10 for pinouts). This interface conforms to the
IEEE 802.3 specification for an Attachment Unit Interface (AUI) and supplies all
the required Ethernet signals. A standard 1-Amp fuse (Artesyn #2959001) guards
the AUI supply voltage. This fuse (F5) is located near connector P2 on the
BajaPPC-750 circuit board. Spare fuses are located at F1 and F2.
Table 7-4. Fast Ethernet Pin Assignments (P3, RJ45)
Pin
Signal
Pin
Signal
1
Tx+
5
No Connection
2
Tx-
6
Rx-
3
Rx+
7
No Connection
4
No Connection
8
No Connection
1
8
Содержание BajaPPC-750
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