Responding to the demand for increased memory and performance in advanced audio applications, Freescale has designed digital signal processing (DSP) chips that support multiple high-definition (HD) audio standards. The Symphony™ audio DSP56721 is part of a family of multi-core 24-bit processors from Freescale, further broadening the company's expansive audio portfolio. The DSP56721 retains code compatibility with Freescale's popular DSP56000 and DSP56300 core families of DSPs while enhancing its capabilities with many new features such as integrated S/PDIF module, an embedded asynchronous sample rate converter and more audio channels. The DSP56721 is similar to the DSP56720 except that there is no external memory controller and this product is offered in two packages – 144LQFP and 80LQFP.
The Symphony audio DSP56721 excels at audio processing for automotive, consumer and professional audio applications requiring high million instructions per second (MIPS). Higher MIPS and memory requirements are driven by the new HD audio standards (Dolby® Digital Plus, Dolby® TrueHD, DTS-HD). In addition, the DSPs are optimal for the professional audio market requiring audio recording, signal processing and digital audio synthesis.
Features
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Dual DSP56300 cores for high performance
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248K x 24-bit words RAM
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Asynchronous Sample Rate Converter (ASRC) to allow multiple data rates in a system
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Integrated S/PDIF transceiver to reduce system cost and complexity
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Enhanced Serial Audio Interface (ESAI) – 4 modules to allow multiple sources
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Dual Serial Host Interfaces (SHI) that support SPI or I2C protocols which provides high speed communication between multiple the DSP and other integrated circuits in the system
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Dual Triple Timer modules for a flexible, programmable timer system
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Dual Hardware Watchdog Timers (WDT) to allow for recovery from runaway code
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Host Interface for DMA Support to allow for high speed audio or control transfers (144LQFP package only)
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144LQFP and 80LQFP package options
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This product is included in Freescale’s , with assured supply for a minimum of 10 years after launch
Target Applications
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A/V receivers
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Blu-ray and HD-DVD players
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Car audio/amplifiers
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Professional audio recording systems