AVB Audio Daisy Chain

Part #: XK-SK-AVB-DC
Silicon on Board: XS1-L16A-128-QF124

The XMOS Audio Video Bridging Daisy Chain endpoint (AVB-DC) is a two-port Ethernet MAC relay implementation that provides time-synchronized, low latency streaming services through IEEE 802 networks.

AVB Audio Daisy Chain Key Features:

  • 2 x 100 Mbit/s full duplex Ethernet interface via MII
  • Support for 1722.1 discovery, enumeration, command and control: ADP, AECP (AEM) and ACMP
  • Simultaneous 1722 Talker and Listener support for sourcing and sinking audio (4 channel in and out)
  • 1722 MAAP support for Talker stream MAC address allocation
  • 802.1Q Stream Reservation Protocols for QoS including MSRP and MVRP
  • 802.1AS Precision Time Protocol server for synchronization
  • I2S audio interface for connection to external codecs and DSPs
  • Media clock recovery and interface to a PLL clock source for high quality audio clock reproduction


1. Download xTIMEcomposer 13.2.1 Tools, AVnu-certified AVB software and AVB-DC software.

2. Following the instructions in the AVB-DC Quick Start Guide to import and build the software.


AVB Audio Daisy Chain kit contents:

  • 2x XP-SKC-L2 core board
  • 4x XA-SK-E100
  • 2x XA-XTAG
  • 2x XA-SK-XTAG
  • 2x PSU (12V 2.5A)
  • 2x USB extension cable 1m
  • 2x Ethernet cable 1m

AVB Software Reference Design

The AVB Audio software reference design is available free of charge from the TSN/AVB Software page and is released under a royalty free license.