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sw_avb Change Log

5.2.1

  • Fixed issue with PLL pin drive logic that could appear as an oscillation in the PI loop output
  • Updates to sc_ethernet to meet timing under xTIMEcomposer v13beta1
  • Added support for DSP4YOU AVB module
  • Added performance improvements to Talker to support > 2 streams in a single logical core
  • Improved robustness of basic 1722.1 controller functionality

5.2.0

  • Numerous updates to support xTIMEcomposer v12 tools, including updated sc_ethernet
  • 1722.1 Draft 21 support for ADP, ACMP and a subset of AECP including an AEM descriptor set
  • Old TCP/IP based Attero Tech application replaced with a 1722.1 demo
  • Added ability to arbitrarily map between channels in sinked streams and audio outputs
  • 1722 MAAP rewritten to optimise memory and improve compliance to standard
  • AVB status API replaced with new weak attribute hooks
  • Support added for CS2100 variant of PLL
  • sc_xlog printing removed, replaced with XScope
  • Support removed for XDK/XAI, XC-2 and XC-3 dev kits
  • Application support removed for Open Sound Control

5.1.2

  • PTP fix to correct step in g_ptp_adjust (commit #1548fa5ce7)
  • Software support added for CS2100 PLL.
  • Media clock recovery PID tuned to decrease settle time and amplitude of oscillations
  • Fixes to app_xr_avb_lc_demo to work with channel counts < 8
  • Transport stream interface
  • 1722/61883-4 packet encapsulation
  • Update to ethernet and tcp package dependencies

5.1.1

  • Field update module added
  • I2S slave functionality added

5.1.0

  • 802.1Qat support
  • Partial (beta) 1722.1 support
  • Clock recovery corrections for 8kHz and >48kHz
  • 1722 packet format corrections
  • 1722 timestamp corrections
  • Stream lock/unlock more predictable
  • Test harnesses for various features
  • SRP state machine corrections
  • SRP state machine drives stream transmission

5.0.0

  • New control API
  • 1722 MAAP support
  • Standard updates
  • Optimizations
  • See design guide for new release details

4.1.0

  • Move to new build system

4.0.0

  • Fixed missing functionality in media clock server
  • Small changes media server API - see demos for examples
  • Optimized audio transport for local listener streams
  • Major rewrite, many internal APIs changed, overall performance improvements
  • Added gigabit ethernet support
  • Added flexible internal routing (local streams) with simplified API, framework is much more powerful for many-channel applications
  • Rewritten audio_clock_recovery as more flexible media_clock_server
  • Added demos for audio interface board
  • Added 8-channel TDM audio interface
  • Added uip IP/UDP/TCP server for adding configuration layer
  • Various bug fixes

31st July 2009

  • Dropped support for xs1a architecture
  • Major rewrite, many internal APIs changed, overall performance improvements
  • New mii-ethernet layer (better performance, capable of 2-port switch)
  • New clock recovery mechanism (including global clock recovery)
  • Internal APIs now use XC features (desktop tools 9.7.0+)
  • New, more efficient, I2S codec interface code
  • XDK Demo is now both a talker and listener endpoint
  • XDK Demo now has debug log on screen (black button)
  • XDK Demo now has stream selection display (green button)
  • XDK Demo now has touch screen equalizer (16 bank bi-quad filter)
  • Demos (synthesised talker) for XC-2 and XC-3 dev boards
  • Added capability to have multiple talker endpoints on network
  • Some 802.1as bug fixes

30th April 2009

  • Added capability to have multiple talker endpoints on network
  • Some 802.1as bug fixes

6th April 2009

  • Added XC-2 mii code
  • Now default to xslb
  • Windows makefile issues fixed

14th February 2009

  • Code restructuring
  • Added dsp based clock recovery
  • Documentation updates

30th January 2009

  • Various bug fixes
  • Major code restructuring
  • PTP now defaults to old multicast mac address (can be set to 802.1as multicast with build flag)

15th January 2009

  • Various bug fixes.
  • 802.1AS support.
  • First spec of host side API for communicating to an XMOS device implementing AVB.

19th December 2008

  • Media clock recovery now fully based on 802.1AS timestamps. Presentation time is honoured.
  • Changed 1588v2 timing protocol to 802.1as (note that some issues remain - see release notes for details)

10th December 2008

  • Code now runs codec in slave mode on the listener and implements media clock recovery.
  • Fixed timestamp to match spec. Timestamps are generated every 8 samples (according to IEC61883-6 SYT_INTERVAL) - so a valid timestamp is generated every 3 out of 4 packets
  • Implemented internal bandwidth restriction in mac layer. Each link going the mac layer (e.g. ptp, avb stream) can be set to use no more than a certain number of Mbps of bandwidth (see the mac_set_bandwidth function).

27th November 2008

  • Fixed bug in Mii ethernet layer that hung the demo when a short (<64 bytes) packet was received.

21st November 2008

  • General internal code restructuring to prepare for future enhancements
  • Fixed timestamp generation issues, AVB packets are now timestamped every packet (i.e. every 6 samples) corrected
  • Fixed incorrect DBC value creation
  • Tested on RevB silicon