2015.4:
 * Version 2.1 (Rev. 7)
 * Revision change in one or more subcores

2015.3:
 * Version 2.1 (Rev. 6)
 * IP revision number added to HDL module, library, and include file names, to support designs with both locked and upgraded IP instances
 * Revision change in one or more subcores

2015.2.1:
 * Version 2.1 (Rev. 5)
 * No changes

2015.2:
 * Version 2.1 (Rev. 5)
 * No changes

2015.1:
 * Version 2.1 (Rev. 5)
 * The support status for Kintex UltraScale is changed from Pre-Production to Production.

2014.4.1:
 * Version 2.1 (Rev. 4)
 * No changes

2014.4:
 * Version 2.1 (Rev. 4)
 * Internal device family change, no functional changes

2014.3:
 * Version 2.1 (Rev. 3)
 * Clean-up benign Multiple Driver Nets warnings

2014.2:
 * Version 2.1 (Rev. 2)
 * No changes

2014.1:
 * Version 2.1 (Rev. 2)
 * Internal device family name change, no functional changes

2013.4:
 * Version 2.1 (Rev. 1)
 * Kintex UltraScale Pre-Production support

2013.3:
 * Version 2.1
 * Reduced warnings in synthesis and simulation.
 * Added support for Cadence IES and Synopsys VCS simulators.
 * Internal FIFO buffers updated to use FIFO Generator v11.0.

2013.2:
 * Version 2.0 (Rev. 1)
 * Repackaged to enable internal version management, no functional changes.

2013.1:
 * Version 2.0
 * Native Vivado Release
 * There have been no functional or interface changes to this IP.  The version number has changed to support unique versioning in Vivado starting with 2013.1.

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