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DSP runs at 1.2GHz

Posted: 16 Nov 2007 ?? ?Print Version ?Bookmark and Share

Keywords:fastest single-core DSP? Ethernet? GbE switch? VoIP?

Texas Instruments Inc. is boosting the speed of its TMS320C6455 DSP from 1GHz to 1.2GHz, giving it the fastest single-core DSP on the market. Despite the speed increase, the price of the chip remains unchanged (at $245), so the extra speed is essentially "free."

HBF-306

Comparison of high-performance DSPs from TI.
(Click to view table.)

TI has also introduced the newest member of its C6000 family, the TMS320C6452. The device comes in 720 and 900MHz versions, and targets telcom, medical and emerging applications. The TMS320C6452 is an upgrade to TI's TMS320C6414/15/16 DSPs. Compared with the C6414/15/16 parts, the C6452 has more on-chip memory, increased I/O bandwidth (DDR2 bus width is doubled to 32bits and PCI clock rate is doubled to 66MHz), and better cycle efficiency due to the C64x+ core (C6414/15/16 devices use the C64x core).

The C6452 also features two new SGMII Ethernet MAC ports and a GbE switch. The Ethernet switch allows each DSP in a multi-DSP system to process only the packets associated with that DSP. In addition, the C6452 includes a Telcom Serial Interface Port (TSIP) for seamless connection to common telcom data streams. TI reports that the TSIP can handle twice as many TDM time slots as the McBSP interconnect found on other C645x DSPs.

TI partner Adaptive Digital Technologies (ADT) plans to port its G.PAK VoIP software onto the C6452. ADT calculates that the 900MHz C6452 can support 82 channels of VoIP in a typical configuration. In comparison, the 1GHz C6415T can support 52 channels.

- Seth Benton, Kenton Williston
DSP DesignLine




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