Freescale Audio DSP for High Definition Audio

Freescale introduced the Symphony DSP56720 and DSP56721 digital signal processing (DSP) chips, to meet the high performance requirements of many audio applications including multiple high definition (HD) audio standards. The chips are processed in 90nm CMOS technology and include two DSP cores, on-chip memory and a rich set of peripherals to create a high quality audio.

The Symphony audio DSP56720 and DSP56721 single-chip solutions were designed using dual DSP56300 24-bit cores. Each core operates at 200 MIPs with a 200 MHz clock, enabling the chip to meet the high performance requirements of many audio applications including HD audio standards such as DTS-HD, Dolby(R) Digital+ and Dolby TrueHD.

The chips feature integrated memory, including on-chip 608K x 24-bit words ROM and 248K x 24-bit words RAM. The DSP56720 adds an external memory interface to accommodate long delays such as reverbs and lip sync. Both DSPs integrate a SPD/IF transceiver and a 10 channel asynchronous sample rate converter (ASRC) that reduces component cost. The chips are able to support up to eight DMA channels per core.

The Symphony DSP56720 and DSP56721 are code compatible with Freescale’s existing 24-bit DSP solutions,  enabling customers to migrate quickly and easily. Both multi-core DSPs incorporate the same plug-and-play software architecture that exists in the Freescale DSP563xx family and support not just the standard audio decoders but also enable flexibility and customization of post processing algorithms.

Along with the introduction of the multi-core DSP56720 and DSP56721, Freescale is developing a new software development tool suite to support the multi-core DSP567xx family as well as the single core DSP563xx family. The new tool suite will include an integrated development environment (IDE), provide a single debugger to target a hardware or software simulator and provide support for parallel port and USB command converters. The new software suite will be available in the second quarter of 2007.

Availability
DSP56720 and DSP56721 currently available for sampling in limited quantities. Volume production is expected in the third quarter of 2007. Suggested resale price US $11.89 for 10K quantity.

Source: Freescale Semiconductor