CS48540-CQZ

Digital Signal Processor Dsp Overview

The CS48540-CQZ is a high-performance 32-bit fixed-point Digital Signal Processor (DSP) designed for multi-channel audio post-processing. It features a processing capability of 300 million MACs per second with dual MAC cycles per clock and 72-bit accumulators. The device includes 24k x 32 SRAM, an integrated PLL-based clock generator, and an 8-channel DMA controller. It supports configurable serial audio inputs and outputs with maximum resolutions of 32-bit at 192 kHz, including TDM modes and S/PDIF transmission. The core operates at 1.8V with 3.3V I/O tolerant to 5V.

Digital Signal Processor Dsp Feature Summary

• High-performance 32-bit DSP core delivering 300,000,000 MAC/S with dual MAC cycles per clock and 72-bit accumulators.
• Configurable digital audio interfaces supporting up to 32-bit resolution at 192 kHz, including TDM input modes and S/PDIF transmitter.
• Integrated 8-channel DMA controller and hardware watchdog timer for lock-up prevention.
• Low-power standby mode consuming 268 µW, suitable for Energy Star® Ready applications.

Digital Signal Processor Dsp Applications

• Digital Televisions
• Automotive Head Units
• HD-DVD™ and Blu-ray Disc® DVD Receivers

Digital Signal Processor Dsp Procurement Notes

Verify the latest datasheet revision before design implementation. Confirm that third-party algorithm licenses, such as Dolby or DTS, are secured separately from the silicon purchase. Ensure the host system provides appropriate power sequencing for the 1.8V core and 3.3V I/O domains.

Digital Signal Processor Dsp Selection Notes

Select the CS48540-CQZ when up to 8-channel input and 8-channel output processing is required. This model sits between the CS48520 (4-channel) and CS48560 (12-channel) in the family. Verify that the application requires the specific channel count and memory allocation provided by this variant rather than the other family members.

Digital Signal Processor Dsp Part Context

The CS48540-CQZ belongs to the CS485xx family of multichannel audio processors. It shares the same 48-pin LQFP package and DSP core architecture as the CS48520 and CS48560. Differentiation within the family is primarily based on the number of available audio input/output channels and associated firmware feature sets.

Digital Signal Processor Dsp Replacement Considerations

Direct functional substitutes within the same package include the CS48520-CQZ and CS48560-CQZ. Note that these variants offer different channel counts (4-channel and 12-channel respectively). Pin compatibility exists, but software and hardware resource utilization must be adjusted accordingly.