CS495313-CVZ

Digital Signal Processor Dsp Overview

The CS495313-CVZ is a 32-bit audio decoder DSP from the Cirrus Logic CS4953xx family, featuring dual Coyote 32-bit DSP cores operating at 150 MHz. It integrates extensive on-chip ROM containing mainstream audio processing codes for Dolby Digital EX, AAC, DTS-ES, and THX Ultra2, eliminating the need for external SDRAM for these tasks. The device supports up to 12 channels of 32-bit serial audio input and 16 channels of 32-bit PCM output with optional 192 kHz S/PDIF transmission. It includes large internal X, Y, and Program RAM/ROM, supporting lip-sync delays up to 150 ms per channel.

Digital Signal Processor Dsp Feature Summary

• Dual 32-bit Coyote DSP cores with 300 MIPS performance and integrated DMA controller
• On-chip ROM includes Dolby Digital EX, AAC, DTS-ES 96/24, THX Ultra2, and Audyssey 2EQ algorithms
• Supports up to 12-channel digital audio input (PCM, IEC61937, DSD) and 16-channel PCM output
• Flexible control interfaces including two SPI/I2C ports and one parallel port (144-pin package)
• Designed for easy migration from CS495xx family with minor hardware/software changes

Digital Signal Processor Dsp Applications

• Audio Decoder systems requiring multi-standard decoding without external memory
• Digital Broadcast Decoders utilizing high-performance post-processing
• DVD Audio/Video Players needing precise lip-sync delay management
• Audio Post-processor applications integrating bass management and parametric EQ

Digital Signal Processor Dsp Procurement Notes

Verify the specific pin count and package variant required, as the CS495313 is available in both 128-pin and 144-pin LQFP packages. Confirm that the selected version aligns with the necessary peripheral availability, such as the parallel control port which is exclusive to the 144-pin configuration. Ensure compatibility with the 1.8 V core and 3.3 V I/O supply requirements during system design.

Digital Signal Processor Dsp Selection Notes

Select the CS495313 over the CS49530x series when larger internal memory is needed for extended lip-sync delays or complex post-processing overlays. Choose the 144-pin package if parallel interface support or dual S/PDIF transmitters are required. Note that the CS495313 belongs to the CS4953x3 class (ROM ID 3), which does not support DSP Condenser; consider the CS495314 (ROM ID 4) if automatic boot from Serial FLASH is desired.

Digital Signal Processor Dsp Part Context

The CS495313-CVZ is part of the enhanced CS4953xx DSP family, an upgrade to the earlier CS495xx series. It offers higher overall performance and lower system cost by integrating more on-chip memory and processing capabilities. This family is designed to support demanding audio post-processing requirements while reducing reliance on external memory components compared to its predecessors.

Digital Signal Processor Dsp Replacement Considerations

Direct replacement within the same family requires checking the ROM ID class. The CS495313 (ROM ID 3) can be replaced by other CS49531x devices like the CS495314, but note that the CS495314 supports DSP Condenser features not present in the CS495313. Migration from the older CS495xx series involves minor hardware and software adjustments.