CS497014-CVZR

Digital Signal Processor Dsp Overview

The CS497014-CVZR is a high-definition audio decoder DSP from Cirrus Logic, featuring dual 32-bit Coyote DSP cores. It supports decoding of Dolby Digital Plus, Dolby TrueHD, MPEG-2 AAC LC 5.1, and various legacy formats like Dolby Pro Logic IIz and THX Ultra2. The device provides up to 12 channels of 32-bit serial audio input and outputs 16 channels of PCM with dual S/PDIF transmitters. Operating conditions include a core supply of 1.8V (1.71V–1.89V), I/O and PLL supplies of 3.3V (3.13V–3.46V), and an operating temperature range of 0°C to 70°C. It is housed in a 128-pin LQFP package.

Digital Signal Processor Dsp Feature Summary

• Dual-core architecture: DSP A handles HD audio decoding while DSP B manages post-processing and enhancement.
• Supports major HD audio formats including Dolby TrueHD and DTS-HD Master Audio (requires external SDRAM).
• Integrated 12-channel digital audio input port and two 8-channel digital audio output ports supporting up to 192 kHz.
• Includes extensive on-chip memory and support for external SDRAM and Serial Flash.

Digital Signal Processor Dsp Applications

• High-definition audio decoders for home theater systems.
• Digital broadcast receivers requiring multi-standard decoding.
• DVD/Blu-ray players and media players with advanced audio processing needs.

Digital Signal Processor Dsp Procurement Notes

Verify the specific firmware overlay requirements for desired audio codecs, as some HD formats require external SDRAM. Confirm that the system design accommodates the 3.3V I/O voltage levels and the 128-pin LQFP thermal characteristics. Ensure compliance with the recommended power-up sequence where the 3.3V IO supply comes up ahead of or simultaneously with the 1.8V core supply.

Digital Signal Processor Dsp Selection Notes

Select the CS497014-CVZR when Dolby TrueHD and AAC LC 5.1 decoding are required without DTS formats. For designs needing DTS-HD Master Audio or DTS Express, consider the CS497024 variant instead. Ensure sufficient external SDRAM capacity is allocated if utilizing Dolby TrueHD or DTS-HD Master Audio overlays, as these algorithms exceed on-chip memory limits.

Digital Signal Processor Dsp Part Context

The CS4970x4 family serves as an enhanced successor to the CS4953xx series, offering higher performance and additional HD audio decoding capabilities. It maintains compatibility with existing CS495xx software libraries while providing a migration path for systems requiring more demanding post-processing tasks. The dual-core design allows simultaneous decoding and enhancement, distinguishing it from single-core predecessors.

Digital Signal Processor Dsp Replacement Considerations

The CS497024-CVZR is a compatible alternative within the same family that includes DTS format support. The CS495314-CVZR is a predecessor but lacks HD audio decoding features. Verify pinout and voltage differences, particularly the PLL supply voltage which is 3.3V on the CS4970x4 compared to 1.8V on older CS495xx devices.