CS48DV2B-CQZR

Digital Signal Processor Dsp Overview

The CS48DV2B-CQZR is a 32-bit fixed-point audio DSP in a 48-pin LQFP package, designed for Dolby Volume and Audistry processing. It supports up to 2.0 channels of digital audio input and 2.1 channels of output with a 32-bit data path. The device operates on a 1.8V core and 3.3V I/O supply (5V tolerant), featuring an integrated PLL and S/PDIF transmitter capable of 192 kHz. Standby power consumption is 268 µW.

Digital Signal Processor Dsp Feature Summary

• Integrated Dolby Volume and Audistry by Dolby firmware overlays
• Dual independent clock domains for mixing different sample rates
• Configurable DAI/DAO supporting I2S, LJ, RJ, and TDM formats
• Slave host boot capability via SPI or I2C serial control port

Digital Signal Processor Dsp Applications

• Digital Televisions
• Soundbars and DTVs with Integrated Soundbars
• Automotive Head Units and Outboard Amplifiers
• Blu-ray Disc and DVD Receivers / Home Theater in a Box
• PC Speakers

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature range. Confirm licensing requirements for third-party algorithms such as Dolby Volume prior to implementation. Check for any product change notifications regarding pinout or electrical characteristics.

Digital Signal Processor Dsp Selection Notes

Select this component for applications requiring dedicated post-processing and volume normalization. Ensure the system design accommodates the 48-pin LQFP footprint and provides appropriate pull-up resistors for open-drain pins. Verify that the host controller can support the required SPI/I2C interface speeds for firmware download.

Digital Signal Processor Dsp Part Context

This part belongs to the Cirrus Logic CS485xx family of audio processors. It is derived from the CS48500 series, integrating S/PDIF Rx/Tx and analog interfaces to reduce system component count. The device utilizes the DSP Composer GUI for application development and firmware configuration.

Digital Signal Processor Dsp Replacement Considerations

Consult the manufacturer's obsolescence notices for potential end-of-life status. Cross-reference with other members of the CS48DV2x family if different firmware overlays or pin configurations are required.