EV-2 Datasheet, PDF (25/44 Pages) Cirrus Logic – Digital Audio Networking Processor

CobraNet™ EV-2
valid network connection or data may be corrupted. Longer distances can be achieved by
upgrading the media or using multiple runs in series.
Switch/Switching Hub
A Switch examines addressing fields on data arriving at each port and attempts to direct the
data out the port or ports to which the data is addressed. Data may be buffered within the
Switching Hub to avoid the collision condition that may be experienced within a Repeater
Hub. A network utilizing Switching Hubs realizes higher overall bandwidth capacity as data
may be received through multiple ports simultaneously without conflict. Switches are
full-duplex devices. A network utilizing switches to connect network segments is referred to
as a switched network.
Unicast Addressing
Data which is unicast is addressed to a specific DTE. A Switching Hub may examine the
unicast address field of the data and determine on which port the addressed DTE resides and
direct the data only to that port. Delivery of an e-mail message is an example of unicast data
addressing.
Unicast Bundle
A unicast Bundle supports a one-to-one routing of audio on the network. Ethernet unicast
addressing is used to deliver a Unicast Bundle. Because unicast addressing is friendly to
Ethernet switches, unicast Bundles should be used for audio delivery whenever possible.
Unregulated Traffic
Refers to any data transmitted onto a network by non-CobraNet devices. Unregulated traffic
is particularly offensive on a repeater network as it interferes with CobraNet's collision
avoidance mechanism and can result in audio dropouts. On a switched network, unregulated
traffic is only a problem if it appears in such copious quantity as to overload the network.
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Rev. 2.1