Devices increase V0IP and wireless performance.(leading edge)(Freescale Semiconductor)(Brief Article)

EDN, December, 2004 by Cravotta, Robert

FREESCALE'S MSC812x devices integrate as many as four SC140 DSP cores, along with as much as 4 Mbytes of on-chip memory, a turbo-coding coprocessor, and a Viterbi coprocessor in a single package to support high-density, carrier-class VOIP (Voice over Internet Protocol) and wireless-infrastructure applications. The two coprocessors are available only on the MSC8126, and at 500 MHz, can handle 400 Viterbi-decoding channels and 20 turbo-coding, 384-kbps channels. They can provide 80 complete symbol-rate channels of 3GPP (Third Generation Partnership Project) voice AMR (adaptive-multirate) channels at 12.2 kbps or 20 data channels of 3GPP at 384 kbps, including symbol- and chip-rate-assistance functions.

The MSC812x devices include a 166-MHz SDRAM controller,...

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