CS47028C-CQZR

Digital Signal Processor Dsp Overview

The CS47028C-CQZR is a high-performance 32-bit audio system-on-a-chip (ASOC) processor from Cirrus Logic. It integrates a DSP core capable of 300 million MACs per second with dual MAC cycles per clock and 72-bit accumulators. The device includes eight 24-bit DAC channels (108dB DR, -98 dB THD+N) and two 24-bit ADC channels (105dB DR, -98 dB THD+N) with an integrated 5:1 analog mux. It features integrated 192 kHz S/PDIF Rx/Tx, three hardware sample rate converters, and configurable serial audio I/O. Operating on a 1.8V core and 3.3V/5V-tolerant I/O, it is housed in a 100-pin LQFP package.

Digital Signal Processor Dsp Feature Summary

• 32-bit DSP Core: 300M MAC/s performance with dual MAC cycles and 72-bit accumulators.
• Integrated Audio Conversion: 8-channel 24-bit DAC (108dB DR) and 2-channel 24-bit ADC (105dB DR).
• Digital Interfaces: Integrated 192 kHz S/PDIF Rx/Tx, I2S, TDM modes, and up to 5 DAI ports.
• Sample Rate Conversion: Three internal hardware SRC blocks for mixing different sample rates.

Digital Signal Processor Dsp Applications

• Automotive head units and outboard amplifiers
• Automotive processors and integration hubs
• Digital TV receivers
• AVR and DVD receivers
• DSP-controlled speakers and sound bars

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'C' indicates the Commercial temperature grade (0°C to +70°C), as the 'D' suffix denotes Automotive grade (-40°C to +85°C). Confirm current availability status with distributors, as this component may be subject to discontinuation or limited stock. Ensure design-in compatibility with the required firmware overlays and development tools.

Digital Signal Processor Dsp Selection Notes

Select the CS47028C-CQZR when eight simultaneous DAC outputs are required alongside two analog inputs with multiplexing. Compare against the CS47048 if four ADC channels are needed, or the CS47024 if only four DAC channels suffice. Consider the Automotive grade (CS47028-DQZ) if operation below 0°C is required. Verify that the 100-pin LQFP package fits the PCB layout constraints.

Digital Signal Processor Dsp Part Context

The CS47028C-CQZR belongs to the CS470xx family of audio DSPs, which also includes the CS47048 and CS47024. These devices share the same 32-bit DSP core, memory architecture, and peripheral interfaces but differ in the number of integrated ADC and DAC channels. This family targets cost-sensitive, high-fidelity audio designs by integrating functions typically requiring multiple chips.

Digital Signal Processor Dsp Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Cirrus Logic sales representatives for potential obsolescence management or next-generation replacements.