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RGMII to GMII Bridge

Lattice Reference DesignsGMII (Gigabit Media Independent Interface) is an Ethernet interface standard, and RGMII (Reduced Gigabit Media Independent Interface) is intended to be an alternative to GMII. The principle objective of RGMII is to reduce the number of pins from 22 down to 12 in a cost-effective and technology-independent manner. This reference design provides a bi-directional bridge function for transferring data between RGMII and GMII.

RGMII to GMII Bridge


Tested Device* SLICEs LUTs I/Os fMAX
LFEC20E-4 14 4 33 >125 MHz
LFXP10E-4 13 3 33 >125 MHz

 

PDF file download design documentation

 

EXE files download source code for LatticeECP/EC

 

EXE files download source code for LatticeXP

 

* May work in other devices as well.

Note: The performance and design sizes shown above are estimates only. The actual results may vary depending upon the chosen parameters, timing constraints, and device implementation. See the design's documentation for details. All coding and design work was done on a PC platform unless noted otherwise.