Ethernet Interfaces
The PP 110/01x board is fitted with two independent 1Gbit/s Ethernet interfaces, implemented
with an Intel 82546EB controller. These interfaces can connect in different ways, depending
primarily on the build configuration of the board. This configuration is indicated by the first digit of
the board name suffix. For example, the name PP 110/012-12 indicates a 1.2GHz processor
board with 1.5 Gbytes of DRAM, V(I/O) set for 5V, and built for Rear Ethernet. The name
PP 110/012-22 indicates the same board but built for backplane networking (PICMG 2.16).
5.1
Rear Ethernet Configuration
If the board is built for operation with Rear Ethernet, both interfaces connect via J3 to a
Transition Module which provides the isolating “magnetics” to support standard RJ45 connectors
and Category 5 cable. Ethernet channel 0 may be switched to route the signals to either the
front panel connector or to the connector on the Transition Module. This switching may be
performed by appropriate software running on the board, but can also be set up using the BIOS
Setup screen for
Advanced
configuration. Neither interface can be connected simultaneously
via the front panel and Transition Module connections. When operating via the front panel
connector, the Ethernet line speed is limited to 10 or 100Mbits/s. When operating via the
Transition Module, 1Gbit/s operation is supported.
5.2
PICMG 2.16 Configuration
If the board is built for operation with backplane networking (PICMG 2.16), both interfaces
connect via J3, but the isolating “magnetics” are now also built into the PP 110/01x board itself.
This allows the board to connect directly to fabric boards via the J3 sub-plane of a PICMG 2.16
backplane. If a Transition Module is used, it must be wired or jumpered such that it does not
connect to the pins on J3 which provide the Ethernet signals. The AD PP5/001 Transition
Module is fitted with switches to provide this isolation where necessary. Ethernet channel 0 may
be switched between front panel and backplane connections, using the same methods as for the
Rear Ethernet configuration. The speed of operation is again limited to 10 or 100Mbits/s via the
front panel connector, but 1Gbit/s via the backplane.
PP 110/01x
5-1
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