Personal Computer User Manual

Features Descriptions
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P2 Input/Output (I/O) Modes
The MVME5100 has two P2 I/O modes (SBC and PMC) that are user-
configurable with jumpers on the board (J6 and J20). The jumpers route
the on-board Ethernet port 2 to row C of the P2 connector. Ethernet
jumpers (J4, J10, and J17) should also be configured.
The SBC mode (also called 761 or IPMC mode) are backwards compatible
with the corresponding MVME712 and MVME761 transition cards and
the P2 adapter card (excluding PMC I/O routing) used on the
MVME2600/2700. The SBC mode is accomplished by configuring the on-
board jumpers and attaching an IPMC712 or IPMC761 PMC in PMC slot
1 of the MVME5100.
PMC mode is backwards compatible with the MVME2300/MVME2400.
PMC mode is accomplished by simply configuring the on-board jumpers.
Note Refer to Chapter 5, Pin Assignments for P2 Input/Output Mode
jumper settings.
Input/Output Interfaces
The following subsections describe the major I/O interfaces on the
MVME5100 including Ethernet, VMEbus, asynchronous communications
ports, real-time clock/NVRAM/Watchdog Timer, other timer interfaces,
interrupt routing capabilities and IDSEL routing capabilities.
Ethernet Interface
The MVME5100 incorporates dual Ethernet interfaces (Port 1 and Port 2)
via two Fast Ethernet PCI controller chips.
The Port 1 10BaseT/100BaseTX interface is routed to the front panel. The
Port 2 Ethernet interface is routed to either the front panel or the P2
connector as configured by jumpers. The front panel connectors are of the
RJ45 type.