AC'97 Controller

Block Diagram

Solution Type: IP Core

End Market: Consumer, Medical

Evaluation Method: OpenCore Plus

Technology: Interface Protocols: Serial

Arria Series: Arria V

Cyclone Series: Cyclone IV, Cyclone V

MAX Series: MAX 10, MAX V

Stratix Series: Stratix IV, Stratix V


Supported Device Family: 

Solution Type: 


Avalon compliant AC`97 (Audio Codec) Controller IP core provides an interface between Nios II processor and AC`97. It supports one AC`97 codec with 6 output and 3 input channels. The core is fully compliant with AC?97 specification Rev.2.1. It is provided as Altera Qsys ready component and integrates easily into any Qsys generated system.


  • Variable and fixed sample rate support up 48 KHz
  • Compliant with AC 97, rev 2.1 (LM4550)
  • Stereo input channel support, Mono microphone channel support
  • Supports 6 output channel surround sound
  • 16, 18 and 20 bit sample size support

Device Utilization and Performance


Getting Started

1. Request an Evaluation version with License from 2. An email send to download the IP Core and the license file to compile the Quartus II design. 3. The IP Core installs documents including tutorial, software guide, reference design, Nios II driver and examples, Windows driver and examples and testing applications. 4. Integrate and test in your design. 5. Reference documents are also available at For any question or support, contact at

IP Quality Metrics

Year IP was first released2005
Latest version of Quartus supported15.1
Altera Customer Use
IP has been successfully implemented in production with at least one customerY

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim Altera edition
  • Timing and/or layout constraints
  • Testbench or design example
  • Documentation with revision control
  • Readme file
Parameterization GUI allowing end user to configure IPY
IP core is enabled for OpenCore Plus SupportY
Source language
Testbench languageVerilog
Software drivers providedY
Driver OS supportNone
User InterfaceAvalon-MM
IP-XACT Metadata includedN
Simulators supportedAltera ModelSim
Hardware validated Y. Altera Board Name
Industry standard compliance testing performed
If No, is it planned?Y
IP has undergone interoperability testing
Interoperability reports available  N

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