CS48DV2A-CQZ

Digital Signal Processor Dsp Overview

The CS48DV2A-CQZ is a fixed-function audio processor integrating Dolby Volume technology for consistent volume control across input sources and content. It supports up to 2.1 channel 32-bit PCM I/O at sampling frequencies of 32kHz, 44.1kHz, and 48kHz. The device features an integrated S/PDIF transmitter and operates with low-power standby consumption of 260µW. It utilizes a 48-pin LQFP package and includes SPI/I²C serial control ports for configuration.

Digital Signal Processor Dsp Feature Summary

• Fixed-function 32-bit Dolby Volume processing with 512 FFT window and 20-band analysis
• Supports 2.1 channel PCM I/O at 32kHz, 44.1kHz, and 48kHz sampling rates
• Integrated S/PDIF transmitter for digital audio output
• Low-power standby mode consuming 260µW

Digital Signal Processor Dsp Applications

• Digital Televisions
• Automotive Entertainment Systems
• 2.1 Channel Hi-Fi Receivers
• Home Theater in a Box (HTiB) Systems

Digital Signal Processor Dsp Procurement Notes

Verify the specific revision suffix (A vs B) against current availability, as datasheets indicate different release dates for revisions. Confirm the operating temperature range matches the application requirements, noting that the 'A' suffix typically denotes commercial grade while 'D' denotes automotive grade. Ensure firmware compatibility with the intended host microcontroller or external SPI Flash interface.

Digital Signal Processor Dsp Selection Notes

Select the CS48DV2A-CQZ for applications requiring up to 2.1 channel audio processing. If 5.1 channel support is required, consider the CS48DV6 variant. Verify that the system design accommodates the 48-pin LQFP package dimensions. Ensure the host controller can communicate via SPI or I²C to manage the ten control parameters and firmware downloads.

Digital Signal Processor Dsp Part Context

The CS48DV2A-CQZ belongs to the CS48DVx family of processors designed to solve inconsistent volume issues in consumer electronics. It serves as a dedicated solution for OEMs seeking cost-effective Dolby Volume implementation without external memory requirements. The device simplifies design by requiring only ten parameters for control from the host microcontroller.

Digital Signal Processor Dsp Replacement Considerations

The CS48DV2B-CQZ is a subsequent revision available from April 2008, offering potential updates over the December 2007 CS48DV2A-CQZ. For 5.1 channel applications, the CS48DV6B-CQZ is the appropriate alternative within the same family.