Cirrus Logic CobraNet - Manual (Page 3)

Digital Audio Networking Processor
CobraNet
DS651PM25
©
Copyright 2006 Cirrus Logic, Inc. 3
General Description
CobraNet is a combination of hardware (the CobraNet
interface), network protocol, and firmware. CobraNet
operates on a switched Ethernet network or on a
dedicated Ethernet repeater network. CobraNet
provides the following additional communications
services for an Ethernet network.
• Isochronous Audio Data Transport
• Sample Clock Distribution
• Control and Monitoring Data Transport
The CobraNet interface performs synchronous-to-
isochronous and isochronous-to-synchronous
conversions as well as the data formatting required for
transporting real-time digital audio over the network.
The CobraNet interface utilizes standard Ethernet. It
has the added capability to carry and utilize other
Ethernet and IP compatible protocols for control and
monitoring such as Simple Network Management
Protocol (SNMP) and User Datagram Protocol (UDP)
through the same network connection. This capability
is shown below as unregulated traffic. Data
communications and CobraNet applications can
coexist on the same physical network in most cases.
Isochronous Data
(Audio)
Control Data
Clock
Unregulated
Traffic
Ethernet Ethernet
Control Data
Isochronous Data
(Audio)
Unregulated
Traffic
Clock
Figure 1. Digital Audio Distribution via Ethernet