Cirrus Logic, Inc. DSP (Digital Signal Processors) CS48520-DQZ

The CS48520-DQZ is a high-performance 32-bit fixed-point Digital Signal Processor (DSP) designed for cost-effective applications in multi-channel and virtual-channel sound enhancements. It operates at a processing capability of 300 million multiply-accumulate operations per second (MAC/S) and features dual MAC cycles per clock, ensuring efficient audio processing. This DSP includes 24k x 32 SRAM, which can be assigned for data or program storage, and has an internal ROM that provides various configurable sound enhancement features. It supports multiple audio input and output configurations, including 8-channel internal DMA, configurable serial audio inputs/outputs, and a maximum audio sample rate of 192 kHz. The device is capable of handling dual processing paths and supports time-division multiplexed (TDM) input modes. The CS48520-DQZ is suitable for a range of applications, including digital televisions, multimedia peripherals, automotive head units, and HD-DVD/Blu-ray receivers. It is programmed using the Cirrus proprietary DSP Composer,Ñ¢ GUI development tool, allowing for easy design of processing chains through a drag-and-drop interface. The device operates with a low-power mode, making it "Energy Star¬Æ Ready," and features a watchdog timer for DSP lock-up prevention. Overall, the CS48520-DQZ is a versatile DSP option for engineers looking to implement advanced audio processing in their projects.