N.A.T. GmbH
Heiko Koerte
VP, Director Sales and Marketing

Advanced Mezzanine Card (AMC) CPU Board with either 8 or 16 Blackfin DSPs

The NAMC-ADSP is a multi-purpose (tele-)communication resource board in AMC (Advanced Mezzanine Card) form factor, being equipped with either 8 or 16 Blackfin DSPs from Analog Devices.

The NAMC-ADSP is targeted at applications in communication environments with extensive need for voice or data computation. The module is designed to process standard telecom algorithms like voice and data compression and decompression or DTMF detection and generation. The NAMC-ADSP is suitable for any voice/data application in any signalling or VoP solution such as in ISDN, SS7, ATM, VoIP or 3G environments are suitable.

The module is capable of handling individual timeslots transmitted via I-TDM protocol over backplane Gigabit-Ethernet. The design is optimized for handling in parallel as many timeslots (TDM data) as possible. The TDM data streams are supplied by a standard I-TDM backplane interface located on port 0 and port 1 (redundant configuration) or port 8 of the AMC connector.

- NAMC-16ADSP: single-width, mid- or full-size AMC module
- directly connection of the local bus and the on-board devices to the backplane via PCIe-X1 lane

Backplane I-TDM Access
- TSI (Time Slot Interchanger) and TDM-to-I-TDM bridge are incorporated in a ECP2M50 FPGA from Lattice
- flexible routing and multi-casting of 64kbps timeslots between the various DSPs (TSI)
- conversion of TDM oriented bit stream into Ethernet packets and vice versa via TDM-to-iTDM bridge
- sending and receiving of ethernet packets via a 1000BaseT-BX Ethernet interface
Each DSP handles up to 256 bidirectional TDM channels.
- up to 4096 timeslots of 64kbps bandwidth

DSP Resources
- NAMC-ADSP-8: eight ADSP-BF535P Blackfin CPUs from Analog Devices
- NAMC-ADSP-16: sixteen ADSP-BF535P Blackfin CPUs
- 32MB individual SDRAM
- 1MB individual FLASH
- Blackfin DSP core frequency: 350MHz
- Blackfin DSP: 700 MMACs (max.) and 3.5MIPS per TDM channel
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