2x2, 8x8, or 16x16 Channel CobraNet Module

CobraNet® technology, the de facto standard of digital audio networking technology from Cirrus Logic, has established itself as the product of choice for multivendor networked audio. The CM-2 is based on the highly integrated CS1810xx or CS4961xx CobraNet Silicon Series, providing an interface in the form of a compact, low-power, low-cost module. Featuring 2, 8 or 16 bi-directional channels, the CM-2 is designed to be easily integrated into a wide variety of audio products such as signal processors, mixers, amplifiers and self-powered loudspeakers.


  • 100BASE-Tx Ethernet interface — 100 Mbps, full-duplex Ethernet, fully compliant with IEEE 802.3u Standard
  • Secondary 100BASE-Tx Ethernet interface — redundant network connection for fault tolerance
  • Quad synchronous serial output ports — capable of supplying 2, 8 or 16 channels at 48 or 96 kHz sample rates
  • Quad synchronous serial input ports — capable of receiving 2, 8 or 16 channels at 48 or 96 kHz sample rates
  • Studio-grade, low-jitter clock source — less than 1 ns of jitter
  • High speed parallel host port interface — interfaces to an optional external control processor
  • SNMP agent — standards-based Ethernet control, monitoring and management
  • TFTP support — firmware updates over the network
  • Low latency — selectable 1.33, 2.66 or 5.33 ms across network
  • Optional remote power through RJ-45 connection — for powering via the Cat-5 Ethernet connection. External circuitry required
  • Asynchronous serial I/O port — bridge serial control data over Ethernet
  • Status LEDs — link, activity and CobraNet conductor status for each Ethernet jack

Parametric Specifications

Description Digital audio network interface module
Ethernet IP 100BASE-Tx, 100 Mbps, full duplex Ethernet, fully compliant with IEEE 802.3u
Features Quad Synchronous, Capable of supplying 8 or 16 channels at 48 and/or up to 96 kHz sample rates
Low Latency Selectable 1.33, 2.66 or 5.33 ms across network

Technical Documents

CobraNet Networked Digital Audio Technology

May 30, 2006, 0173-0506-PB : 786 Kb

CobraNet Programmer's Reference Manual

Feb 16, 2006, DS651PM25 : 873 Kb

CM-2 Product Bulletin

Oct 6, 2004, 0088-1004-PB-LP : 333 Kb


Comprehensive Solutions