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AR# 32204

LogiCORE Tri-Mode Ethernet MAC v4.1 - Release Notes and Known Issues for ISE 11.1


This Answer Record contains the Release Notes for the LogiCORE Tri-Mode Ethernet MAC v4.1 Core, which was released in the ISE 11.1 and includes the following:

- New Features

- Bug Fixes

- Known Issues

For installation instructions, general CORE Generator known issues, and design tools requirements, see the IP Release Notes Guide at:



New Features

- ISE 11.1 software support

- Virtex-6 support

- Spartan-6 support

- Virtex-5 TXT support

- Option to generate without Half Duplex logic for Full Duplex applications

- Option to generate with a Media Independent Interface (MII) for 10Mb/s and 100Mb/s only Ethernet speed support

- Option to generate for 1Gb/s only Ethernet speed support: this option replaces the 1-Gigabit Ethernet MAC LogiCORE.

- Example Design Verilog language updated to Verilog 2001 syntax, including port map definitions, use of generate statements and generic/attribute set syntax.

- Example Designs for the Virtex-4 family have been updated with new logic for the GMII and RGMII physical interfaces to improve input setup/hold timing margins. The new logic now uses DCMs.

- RGMII Example Design (using clock enables) updated to allow transmitter global clock sharing across multiple core instantiations.

Bug Fixes

(Xilinx Answer 30644) When using RGMII and Spartan-3 family devices, the example design has a missing period contraint.

Known Issues

(Xilinx Answer 32629) LogiCORE Tri-Mode Ethernet MAC Core - Throughput in half-duplex GMII and RGMII modes

AR# 32204
Date Created 04/21/2009
Last Updated 12/15/2012
Status Active
Type General Article