Merging AES67 RAVENNA Linux driver for ADI ADSP-SC573

Merging Technologies, and Analog Devices, Inc. (ADI) are partnering for an embedded solution for ADI’s ADSP-SC57x SHARC audio digital signal processors (DSPs). As an asset of this new partnership, a much broader audience will be able to access this state-of-the-art AES67 technology and enable OEMs to design for AES67 using the ADI ADSP-SC573.

This solution will give a lot of key features for manufacturers of electronics who want to go the AES67 route.


  • Merging Technologies’ experience in the AoIP field (RAVENNA/AES67)
  • The ADSP-SC573 is a high-performance, power-efficient, real-time platform that delivers greater than 6 giga-floating-point operations per second using two enhanced SHARC+ cores and advanced DSP accelerators.
  • Up to 8 channels of audio (8 in + 8 out) at 44.1/48kHz and 4 channels of audio (4 in + 4 out) at 88.2/96 kHz.
  • Perfect for FIR
  • ARM processor and especially from 2 Sharc DSPs to carry out digital audio processing.
  • Cost efficient licensing. Only pay for the channels needed, no additional licensing fees.
  • The perfect solution for loudspeakers of any type or smaller Audio interfaces.

ADSP-SC573 Overview

ADSP-SC573 Overview


ADSP-SC573-EZ-KIT (pdf file)


The Merging licensed based agreement is per channels based at 44.1/48kHz with chip options of 2, 4, 6, 8 or 16 channels initially.

  • Quarterly license payments based on units sold
  • No additional cost (optional license for using the RAVENNA logo and membership)

For any additional information and requests, please reach out to

Technical specifications

  1. A Linux kernel module: RAV/AES67 LKM
    • Formatting Rx/Tx RTP audio streams
    • Audio sharing with the SHARC through a L2 SRAM
    • PTP Hardware unit interrupt handling and configuration
  2. An executable: Butler
    • High level RAVENNA/AES67 protocol implementation
    • mDNS / SAP discovery
    • NMOS IS-04/05 discovery/registration/management
    • End user configuration via a web server CometD / HTTP REST API frontend
  3. A PTP service: ptp4l
    • PTP boundary clock and ordinary clock
    • Synchronize the PTP hardware clock to the master/system clock

ADSP-SC57x Specs

Demo kit setup

The detailed demo kit setup can be found on our Knowledge base here.

Demo Kit Setup