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ASRC: Audio Sample Rate Converter

Computer Aided Software Technologies, Inc (dba CAST)

Member

The CAST ASRC (Audio Sample Rate Converter) is a compact, high-performance IP core that delivers precise digital audio conversion across a wide range of sample rates (8 kHz to 192kHz) while preserving signal integrity and minimizing distortion. Supporting both asynchronous and synchronous modes, it ensures seamless real-time streaming or high-speed batch processing for applications in professional audio, broadcast, telecommunications, automotive infotainment, gaming, and VR. The ASRC handles tens to hundreds of TDM channels, achieving ultra-low distortion with THD+N averaging -130 dB. With sub-100ms sync time and minimal latency, it provides transparent, studio-grade 24-bit audio conversion. Designed for easy integration into ASICs or FPGAs, it features AXI4-Stream for audio data, AXI-Lite/APB control interfaces, and optimized resource usage for cost-sensitive environments. Deliverables include Verilog RTL/netlist, testbenches, drivers, and documentation for r...

The CAST ASRC (Audio Sample Rate Converter) is a compact, high-performance IP core that delivers precise digital audio conversion across a wide range of sample rates (8 kHz to 192kHz) while preserving signal integrity and minimizing distortion. Supporting both asynchronous and synchronous modes, it ensures seamless real-time streaming or high-speed batch processing for applications in professional audio, broadcast, telecommunications, automotive infotainment, gaming, and VR. The ASRC handles tens to hundreds of TDM channels, achieving ultra-low distortion with THD+N averaging -130 dB. With sub-100ms sync time and minimal latency, it provides transparent, studio-grade 24-bit audio conversion. Designed for easy integration into ASICs or FPGAs, it features AXI4-Stream for audio data, AXI-Lite/APB control interfaces, and optimized resource usage for cost-sensitive environments. Deliverables include Verilog RTL/netlist, testbenches, drivers, and documentation for rapid deployment

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Key Features

  • Supports asynchronous real-time streaming with auto sample detection and synchronous mode for fast batch audio file processing.
  • Multi-channel audio processing with support for tens to hundreds of TDM channels, scalable to system clock frequency for flexible performance.
  • Achieves sub-100ms sync at 100 MHz with dynamic ratio updates, compensates clock drift, and ensures minimal delay for fast, reliable streaming.
  • Supports audio formats from 8 kHz to 192kHz with up to 24-bit depth, delivering flexibility for diverse input and output requirements.
  • Delivers ultra-low distortion with THD+N down to -130 dB, ensuring clean audio from 8 kHz–192 kHz and eliminating artifacts from jitter or drift.
  • Easy integration with AXI4-Stream for audio, AXI-Lite/APB for control, and a lint-clean, scan-ready design with clear CDC boundaries.
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Offering Brief

Offering Brief

Device Family Arria® V GT FPGA, Arria® V GX FPGA, Arria® V GZ FPGA, Arria® V ST SoC FPGA, Arria® V SX SoC FPGA, Cyclone® IV E FPGA, Cyclone® IV GX FPGA, Cyclone® V E FPGA, Cyclone® V GT FPGA, Cyclone® V GX FPGA, Cyclone® V SE SoC FPGA, Cyclone® V ST SoC FPGA, Cyclone® V SX SoC FPGA, Agilex® 3 FPGAs and SoC FPGAs C-Series, Agilex® 5 FPGAs and SoC FPGAs D-Series, Agilex® 5 FPGAs and SoC FPGAs E-Series, Agilex® 7 FPGAs and SoC FPGAs F-Series, Agilex® 7 FPGAs and SoC FPGAs I-Series, Agilex® 7 FPGAs and SoC FPGAs M-Series, Agilex® 9 FPGAs and SoC FPGAs Direct RF-Series, Arria® 10 GT FPGA, Arria® 10 GX FPGA, Arria® 10 SX SoC FPGA, Cyclone® 10 GX FPGA, Cyclone® 10 LP FPGA, MAX® 10 FPGA, Stratix® 10 AX SoC FPGA, Stratix® 10 DX FPGA, Stratix® 10 GX FPGA, Stratix® 10 SX SoC FPGA, Stratix® 10 TX FPGA, Stratix® IV E FPGA, Stratix® IV GX FPGA, Stratix® V GS FPGA, Stratix® V GX FPGA
Offering Status Production
Integrated Testbench Yes
Evaluation License Yes
Design Examples Available Yes
Demo No
Compliance Yes
Latest Quartus Version Supported 24.3.1
Development Language Encrypted Verilog, Verilog

Verilog/System Verilog, Encrypted Verilog/System Verilog, or FPGA netlist

System Verilog testbench

Comprehensive documentation

Sample synthesis and simulation scripts

Bare Metal Driver

Ordering Information

ASRC

from Direct

$0.00

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Documentation & Resources

design hub icon ASRC datasheet

Market Segment and Sub-Segments

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