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Functional Description
3
Note The unique Ethernet address is set at the factory and should not
be changed. Any attempt to change this address may create node
or bus contention and thereby render the board inoperable.
If the data in NVRAM is lost, use the number on the label in the PMC
connector keepout area to restore it.
For the pin assignments of the 10BaseT/100BaseTX connector, refer to
Appendix B, Connector Pin Assignments.
At the physical layer, the Ethernet interface bandwidth is 10Mbit/second
for 10BaseT. For the 100BaseTX, it is 100Mbit/second. Refer to the
BBRAM/TOD Clock memory map description in the MVME2400 Series
VME Processor Module Programmer’s Reference Guide for detailed
programming information.
PCI Mezzanine Card (PMC) Interface
A key feature of the MVME240x family is the PCI bus. In addition to the
on-board local bus devices (Ethernet, etc.), the PCI bus supports an
industry-standard mezzanine interface, IEEE P1386.1 PCI Mezzanine
Card (PMC).
PMC modules offer a variety of possibilities for I/O expansion such as
FDDI (Fiber Distributed Data Interface), ATM (Asynchronous Transfer
Mode), graphics, Ethernet, or SCSI ports. For a complete listing of
available PMCs, go to the GroupIPC’s Web site at
http://www.groupipc.com/. The MVME240x supports PMC front panel
and rear P2 I/O. There is also provision for stacking one or two PMC
carrier boards, or PMCspan PCI expansion modules, on the MVME240x
for additional expansion.
The MVME240x supports two PMC slots. Two sets of four 64-pin
connectors on the base board (J11 - J14, and J21 - J24) interface with
32-bit/64-bit IEEE P1386.1 PMC-compatible mezzanines to add any
desirable function.
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