CS47048C-CQZR

Digital Signal Processor Dsp Overview

The CS47048C-CQZR is a high-performance 32-bit fixed-point audio system-on-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 features eight 24-bit DAC outputs and four 24-bit ADC inputs, including an integrated 5:1 analog mux for stereo channels. It supports up to 192 kHz sample rates via integrated S/PDIF Rx/Tx and I²S interfaces. Power requirements include a 1.8V core supply and 3.3V I/O tolerant to 5V. The component is housed in a 100-pin LQFP package with an exposed pad.

Digital Signal Processor Dsp Feature Summary

• 32-bit DSP Core: Performs 300M MAC/s with dual MAC cycles per clock and 72-bit precision accumulators.
• Audio Interfaces: Integrates 8-channel 24-bit DACs (108dB DR) and 4-channel 24-bit ADCs (105dB DR) with a 5:1 analog mux.
• Digital Connectivity: Supports 192 kHz S/PDIF Rx/Tx, I²S, and TDM modes with three hardware Sample Rate Converter (SRC) blocks.
• Memory & Control: Includes 32K x 32-bit SRAM and allows host control/boot via SPI or I²C serial interfaces.

Digital Signal Processor Dsp Applications

• Automotive head units and outboard amplifiers
• High-end Digital TVs
• AVR and DVD receivers
• DSP-controlled speakers such as subwoofers and sound bars

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'C' indicates the Commercial temperature grade (0°C to +70°C). Confirm that the 'Z' suffix denotes lead-free packaging compliant with RoHS standards. Check current availability status as this component may be subject to discontinuation notices. Ensure the ordering quantity matches the manufacturer's standard packaging configuration.

Digital Signal Processor Dsp Selection Notes

Select the CS47048C-CQZR when eight simultaneous DAC outputs are required, distinguishing it from the CS47028 (8 DACs/2 ADCs) and CS47024 (4 DACs/2 ADCs). Choose the 'C' variant for commercial applications within 0°C to +70°C; use the 'D' variant for automotive grades (-40°C to +85°C). Ensure the design accommodates the 100-pin LQFP-EP package dimensions and thermal dissipation requirements.

Digital Signal Processor Dsp Part Context

This part belongs to the CS470xx family of audio processors, which simplifies system design by integrating S/PDIF, analog I/O, and SRCs into a single chip. The CS47048 represents the highest channel count variant in this series, offering 4 ADC and 8 DAC channels compared to the reduced counts in the CS47024 and CS47028 models.

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 current alternative recommendations or obsolescence management strategies.