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16.2.2 CobraNet Transmitters
A CobraNet transmitter is a logical entity in the CobraNet interface that has the ability to send a bundle of audio
samples on the CobraNet network. CobraNet devices typically have multiple transmitters. Each Hono Mini
CobraNet interface, for example, has 4 transmitters. An incomplete list of transmitter routing variables follows:
txBundle
– this variable specifies the bundle number to transmit. A value of 0 indicates that the transmitter
is disabled.
txSubMap
– a sequence of up to 8 audio routing channel numbers that specify which audio samples
should be placed in the bundle. A value of 0 indicates an unused slot in the bundle.
txSubFomat
– a sequence of format specifiers that define how many bits per sample are placed in the
bundle.
txSubCount
– the number of channels in this bundle.
16.2.3 CobraNet Receivers
A CobraNet receiver is a logical entity in the CobraNet interface that has the ability to receiver a bundle of audio
samples from the CobraNet network. CobraNet devices typically have multiple receivers. Each Hono Mini
CobraNet interface, for example, has 4 receivers. An incomplete list of receiver routing variables follows:
rxBundle
– the number of the bundle to receive. This should be the same bundle number being
transmitted somewhere else on the network. A value of 0 indicates that the receiver is disabled.
rxSubMap
– a sequence of up to 8 audio routing channel numbers that specify where incoming bundle
samples should be routed.
16.2.4 CobraNet Sample Rate and Latency
The CobraNet sample rate supported by s fixed at 48kHz with three latency modes of 5.33ms (default), 2.67ms,
or 1.33ms.
16.2.5 CobraNet References
This document is not intended to be an expansive guide to CobraNet networking and routing. The Hono Mini
CobraNet interfaces adhere to the CobraNet standard through the use of off-the-shelf CobraNet silicon from
Cirr
us Logic. More detailed CobraNet information is available from Cirrus Logic’s website.
The following links may be helpful:
CobraNet Info:
http://www.cobranet.info/en/support/cobranet/
CobraNet CobraCAD and CobraNet Discovery:
http://www.cobranet.info/dispatch/forms/sup/boardreg/breg/BregController.jpf
CobraNet Audio Routing Primer:
http://cirrus.com/en/pubs/appNote/CobraNet_AudioRoutingPrimer.pdf
Hardware Manual and Programmer’s Reference:
http://www.cobranet.info/en/support/cobranet/developer/tech_data_sheet.html
Switched Networks and Redundancy:
http://www.cirrus.com/en/support/cobranet/design/switched_networks.html
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