CS48520-DQZ

Digital Signal Processor Dsp Overview

The CS48520-DQZ is a high-performance 32-bit fixed-point digital signal processor from the Cirrus Logic CS485xx family, designed for multichannel audio post-processing and mixing. It features a DSP core capable of 300 million MACs per second with dual MAC cycles per clock and 72-bit accumulators. The device includes 24k x 32 SRAM, configurable internal ROM for sound enhancement sets, and an 8-channel DMA controller. It supports up to 4-channel input and 4-channel output at sample rates up to 192 kHz, with interfaces including I²C, SPI, S/PDIF transmitter, and DSD input. Operating voltages are 1.8V core and 3.3V I/O tolerant to 5V.

Digital Signal Processor Dsp Feature Summary

• 32-bit fixed-point DSP core delivering 300M MAC/s with dual MAC cycles and 72-bit accumulators
• Integrated memory comprising 24k x 32 SRAM and internal ROM with configurable sound enhancement feature sets
• Supports up to 4-channel PCM/DSD input and 4-channel output at 192 kHz with TDM modes
• Dual clock domain capability for mixing audio streams with different sampling frequencies

Digital Signal Processor Dsp Applications

• Digital Televisions
• Multimedia Peripherals
• iPod Docking Stations
• Automotive Head Units
• HD-DVD and Blu-ray Disc DVD Receivers

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Confirm that any required third-party algorithm licenses, such as Dolby or SRS, are secured prior to implementation. Check for obsolescence notices or product change notifications associated with this part number before finalizing procurement plans.

Digital Signal Processor Dsp Selection Notes

Select the CS48520-DQZ when the application requires up to 4 input and 4 output channels. Choose this model over the CS48540 or CS48560 if higher channel counts are not needed, as it offers a cost-effective solution for standard multichannel audio enhancement tasks. Ensure the system design accommodates the 48-pin LQFP package and provides necessary external components for the PLL and power supplies.

Digital Signal Processor Dsp Part Context

The CS48520-DQZ belongs to the CS485xx family, which also includes the CS48540 and CS48560. These devices share the same 32-bit DSP core and architecture but differ in the number of supported audio channels. The CS48520 is the entry-level model in this family, tailored for applications requiring fewer channels compared to the 8-channel CS48540 and 12-channel CS48560.

Digital Signal Processor Dsp Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. For pin-compatible alternatives or updated generations, consult Cirrus Logic sales representatives directly.