CobraNet CM-1 ® Digital Audio Network Interface Module CobraNet® Technology Advantages • Also available as low-cost ICs without licensing or royalty fees. • CobraNet® technology can coexist with data traffic over existing Ethernet networks, saving money by eliminating additional infrastructure costs. • De-facto industry standard with more than one million channels of installed audio around the world. • Networked audio, control and monitoring (bi-directional). • Uses SNMP for control and monitoring (IT-friendly). • Incorporates multiple fault-tolerant features. • Ability to send audio from any CobraNet® interface to any other – unlimited addressing, unlimited capacity. CobraNet® technology has established itself as the • Studio Grade, Low-Jitter Clock Source. market-leading solution of choice for networked audio. • High Speed Parallel Host Port Interface – The CobraNet® solution leverages the rapid developments in the IT networking industry to provide an increasingly cost-effective connectivity solution for audio professionals worldwide. The CM-1 is a DSPbased solution that provides an interface in the form of a compact, low-power module. Featuring 32 simultaneous channels, each with distributed digital audio input and output, the CM-1 is designed to be easily integrated into a wide variety of professional Cirrus Logic, Inc. 2901 Via Fortuna Austin, Texas 78746 United States T +1-512-851-4000 F +1-512-851-4977 Toll-Free +1-800-888-5016 Sales Support North America +1 800-625-4084 Asia Pacific +852 2376-0801 Japan +81 (3) 5226-7757 Europe/UK +44 (90) 1628-891-300 learn more at www.cirrus.com audio products such as signal processors, mixers, amplifiers and self-powered loudspeakers. 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. Features • 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 32 total audio channels at 48 or 96 kHz sample rates. • Quad Synchronous Serial Input Ports – capable of receiving 32 total audio channels at 48 or 96 kHz sample rates. • Status LEDs – Link, Activity and CobraNet.® conductor status for each Ethernet jack. • Order CM-1 or CM-1-FWZ option – The CM-1 Ethernet connector includes an RJ-45 jack with integrated transformer isolation. The CM-1-FWZ option includes solder points to be wired to external Ethernet connector. Electrical Specifications Power Host Port Description Direction Notes Description Notes Host Data In/Out Host port data (x8) VCC +3.3 System +3.3 V, +/-0.3 Volts, 1.2 A Host Address In Host port address (x3) VCC +5 System +5.0 V, +/-0.25 Volts, 0.1 A Host Direction In Host port transfer direction GND System ground Host Request Out Host port DMA request Host Alert Out Host port interrupt request Host Strobe In Host port select Operating Temperature Range – 0 to 70 degrees Celsius ambient. Asynchronous Serial Description Synchronous Serial (Audio ) Ports Direction Notes Serial Receive Data In Serial data receive Out Serial data transmit Out RS485 multi-drop transmit enable Description Direction Notes Serial Transmit Data Audio Bit Clock Out Synchronous serial bit clock Transmit Drive Enable Audio Output Data Out Output serial audio data (x4) Audio Input Data In Input serial audio data (x4) Sample Clock Out 48 or 96 kHz sample clock Description Direction Notes Master Audio Clock In In External 24.576 MHz clock input for systems containing multiple CobraNet® interfaces Reset In System reset (active low) Watch Dog Out Continuously toggles to indicate proper operation Master Audio Clock Out Out Low jitter master 24.576 MHz clock output Interface Ready Out Reference Clock In Auxiliary reference sample clock input for synchronizing network to an external clock source De-asserts during installation when fault detected or connection to network is lost Cable Power In/Out Aux RJ-45 pins for Cat-5 powered applications CM-1 Ethernet Electrical Specifications • Ethernet Primary Connector – RJ-45 jack. Standard Ethernet pinout. Complies with IEEE 802.3u standard. Miscellaneous CM-1 (Top View) • Ethernet Secondary Connector – RJ-45 jack with integrated transformer isolation. Standard Ethernet pinout. Complies with IEEE 802.3u standard. • Ethernet uses 2 of the 4 twisted wire pairs available on a Cat-5 cable. The unused pairs are available at the module interface connector as Cable Power for DC power (if supplied). CM-1-FWZ Ethernet Electrical Specifications • Ethernet Primary Connector – Solder points to be wired to external Ethernet connector. Transformer isolated. In-use/conductor and Link/Act/Fault LEDs supported. Complies with IEEE 802.3u standard. • Ethernet Secondary Connector – Solder points to be wired to external Ethernet connector. Transformer isolated. In-use/conductor and Link/Act/Fault LEDs supported. Complies with IEEE 802.3u Standard. • Ethernet uses 2 of the 4 twisted wire pairs available on a Cat-5 cable. Connection points are provided for all 8 conductors on each port. The unused pairs are available at the module interface connector as Cable Power for DC power (if supplied). ©2009 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic, Cirrus, the Cirrus Logic logo design and CobraNet are trademarks of Cirrus Logic, Inc. Other brand and product names may be trademarks or service marks of their respective owners. Product Bulletin 0087-0609-PB