Floating-point DSPs feature 65% power reduction

Floating-point DSPs feature 65% power reduction

300-MHz devices target audio, medical, and industrial applications

Merging the advantages of floating point with a set of connectivity peripherals, low power, and low cost, the TMS320C6745 and TMS320C6747 DSPs and the OMAP-L137 applications processor include USB 2.0, an 10/100 Ethernet, and MMC/SD interfaces, plus three enhanced PWMs, and 32 DMA channels. The devices take only 490 mW, a 65% reduction in power over previous generations. Standby power has been cut 50% to 65 mW.

The C6745 runs at up to 300 MHz and has multichannel audio serial ports with up to 16 serializers and FIFO buffers. It has an 8-bit external asynchronous memory interface for NAND/NOR flash and a 16-bit synchronous external memory interface for SDRAM. The C6747 DSP adds an additional 128 Kbytes of on-chip RAM, and memory interfaces are upgraded to 16 and 32 bit.

The OMAP-L137 applications processor includes the 300-MHz C674x floating-point DSP core plus a ARM9 processor. The ICs come in TQFP176 and PBGA256 packages. (Ea/100: TMS320C6745, $10.41; TMS320C6747, $11.72; OMAP-L137, $18.93 — samples available 4th qtr.)

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