NAMC-ODSP-M

The NAMC-ODSP-M is a DSP based media processing/gateway AMC that offers audio and video acceleration to a MTCA system. It combines an array of DSPs with a powerful FPGA, an on-board switch, and advanced media gateway software.

Up to eight Octasic OCT2224M DSPs, each with twenty-four DSP cores, provide the specialized processing power needed for video and audio media processing. Each DSP is equipped with its own private external 512MB DDR3 memory. This pool of DSPs is controlled from a host application over Ethernet using one of the redundant 1/10GbE ports of the NAMC-ODSP-M.

The onboard Xilinx Kintex-7 FPGA provides a local Linux processor for low-overhead management to the interfacing host system, while also giving headroom for further extension and customization.

The AMC Ethernet ports are connected to the onboard managed Ethernet switch, to which each individual DSP is also connected by two separate 1GbE links to support, for example, 1080p video conferencing functions.

An FPGA-based ITDM to TDM controller enables one or two 8k channel ITDM interfaces, resulting in up 16k ITDM channels.

The NAMC-ODSP-M has two redundant 10GbE interfaces at ports 4-7 and 8-11, and two redundant 1GbE interfaces at ports 0/1 of the backplane.

An integrated Ethernet-based API enables simple connection and configuration, as well as attachment of the media gateway software.

The NAMC-ODSP-M comes with Octasic’s Vocallo media gateway software, providing rich audio and video applications based on IP and TDM, with many codecs and protocols included, such as high-density H.264, MPEG4, H.263 video codec and G.711, G.729, SILK, Opus and EVS voice transcoding. Octasic has enhanced this standard functionality with video and voice quality features such as video scaling, mixing and keying, as well as echo cancellation, conferencing, and adaptive noise reduction.

This covers many advanced audio / video applications, conferencing systems, audio / video transcoding, video surveillance and T.38 fax relay applications. The software provides an Ethernet packet-based configuration API so no DSP programming is required. It offers a very flexible architecture for prototyping, development, and deployment.

• AMC form factor, single mid- or full-size

Processing Resources

• Xilinx Kintex-7 XC7K160T, FBG676 (160k LE, 12Mbit internal SRAM, 8SerDes, 400 I/0)
• Microblaze soft-core CPU

Media Processing Array and Memory

• Up to eight 24-core Octasic OCT2224M DSPs, each connected to two 16-bit wide DDR3 memory slots using 2Gb devices => 512MB DRAM per DSP.
• Each DSP has its TDM interface (4 Rx + 4 Tx lines, up to 32MHz) connected to the FPGA

Backplane Connectivity

• GbE at AMC Ports 0/1
• 10GbE XAUI at AMC Ports 4-7 and 8-11
• TCLKA-D (for syncing onboard iTDM/TDM to system)

Networking

• Vitesse VSC7448 Ethernet switch
  • 24x 1GbE ports
  • 4x 10GbE ports
• 2x 1GbE interfaces per DSP
• 3x 1GbE and 2x 10GbE interfaces between FPGA and on-board Ethernet switch
• L2 and L3 switching / routing

Clocking

• Clocking Chip Si5338 (4 programmable low jitter clock outputs)
• Stratum 3 Telecom PLL

Supported audio codecs

• Wireline: G.711, G.722, G.723, G.726, G.729a
• Wireless: AMR, AMR-WB, EFR, GSM-FR, EVRC -A/-B/-NW2K, EVS
• Internet: SILK, Opus, iLBC
• Acoustic echo cancellation, noise reduction, level control
• Tone detection / generation / relay
• Conferencing

Supported video codecs

• 263, MPEG4, H.264, MPEG2
• 1080p to QCIF resizing
• Bit rate / frame rate adaptation
• Mixer, picture-in-picture
• Data
• 38 Fax Relay
• Voice band-data

Operating system support

• Embedded Linux operating system