CS48540-DQZ

Digital Signal Processor Dsp Overview

The CS48540-DQZ is a multichannel audio processor from the Cirrus Logic CS485xx family, designed for high-performance digital audio post-processing and mixing. It features a 32-bit fixed-point DSP core capable of 300 million MAC operations per second with dual MAC cycles per clock and 72-bit accumulators. The device supports up to 8-channel input and 8-channel output in a 48-pin LQFP package. Key specifications include configurable serial audio interfaces supporting up to 32-bit resolution at 192 kHz, an integrated PLL-based clock generator, and a low-power standby mode consuming 268 µW.

Digital Signal Processor Dsp Feature Summary

• High-performance 32-bit DSP core with 300M MAC/S and 72-bit accumulators
• Supports up to 8-channel PCM/DSD input and 8-channel output
• Configurable serial audio I/O with TDM modes and 192 kHz S/PDIF transmitter
• Integrated PLL clock manager and hardware watchdog timer

Digital Signal Processor Dsp Applications

• Digital Televisions
• Automotive Head Units
• Automotive Outboard Amplifiers
• DVD Receivers
• Multimedia Peripherals

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pinout compatibility and firmware configuration options. Ensure that any required third-party audio processing licenses, such as those for Dolby or DTS technologies, are secured prior to implementation. Confirm that the system design accommodates the 48-pin LQFP package dimensions and thermal requirements specified in the mechanical drawings.

Digital Signal Processor Dsp Selection Notes

Select the CS48540-DQZ when the application requires more than 4 channels but fewer than 12 channels of audio processing. This model provides 8-channel I/O capabilities, distinguishing it from the CS48520 (4-channel) and CS48560 (12-channel). Consider the internal ROM feature sets if custom firmware development is not planned, or utilize the DSP Composer tool for custom processing chains via the serial control port.

Digital Signal Processor Dsp Part Context

The CS48540-DQZ belongs to the CS485xx family of audio processors, which also includes the CS48520 and CS48560. These devices share a common high-performance DSP core architecture but differ in channel count and memory allocation. The CS485xx series targets cost-effective multi-channel sound enhancement applications, differentiating itself from legacy decoders by offering reduced memory while maintaining high computational performance for virtual and multi-channel audio processing.

Digital Signal Processor Dsp Replacement Considerations

The CS48520-CQZ and CS48560-CQZ are part of the same family but offer different channel counts (4 and 12 respectively). Direct substitution requires verifying that the target application's channel requirements align with the replacement device's capabilities. The CS48540-CQZ is the primary variant within this specific model line.