Freescale Semiconductor PE Micro Cyclone Pro, Руководство пользователя

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Cyclone PRO User Manual 95
CYCLONE PRO
through a Hub.
9.4.1 Connecting the Cyclone to the PC over a network:
The Cyclone was intended for use on a network of multiple computers (and
other Cyclones). There are many possible network configurations, and to
describe them all is beyond the scope of this document. However, most
configurations are a modification of a basic theme, which is that of connecting
one or more PCs through a Hub to one or more Cyclones.
In order to connect these devices to the Hub, you will need to use the
provided straight-through Ethernet cable. The straight-through cable, which is
the “standard” Ethernet cable, is used to connect devices of different types
together, such as a PC to a Hub, or a Hub to a Cyclone.
At this point it once again becomes necessary to program the Cyclone with
valid IP numbers, the process for which is described in greater detail in the
following section. However, it is important for the Cyclone and the PCs to
have matching Subnet and Gateway IP numbers, and for each to have a
unique IP number on the network. An example of a setting for above is as
follows:
IP Number Gateway IP Subnet Mask
PC1 192.168.100.1 192.168.100.3 255.255.255.0
PC2 192.168.100.2 192.168.100.3 255.255.255.0
CYCLONE 192.168.100.4 192.168.100.3 255.255.255.0
Gateway 192.168.100.3 192.168.100.3 255.255.255.0
It is important to briefly touch upon the underlying network architecture, which
can be a 10Mb (Megabit), 100Mb, 10/100Mb, half-duplex, or a full-duplex
connection. The details of the underlying network architecture are beyond the
scope of this document, but it is sufficient to note that most modern network
cards, as well as the Cyclone device, have the capability to configure
themselves for the underlying network through the Auto-negotiation
mechanism. Auto-negotiation is performed as soon as a network cable is
connected to the device, and it sets the operating parameters of the device to
match those of the network.
9.4.2 Connecting Cyclone-to-PC via an Ethernet cable
In order to connect the Cyclone to a PC directly via an Ethernet cable, you
need to use what is known as a cross-over cable. A cross-over cable, which is