Implementing External GMII - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

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16.2 English

In certain applications, the client-side GMII datapath can be used as a true GMII to connect externally off-device across a PCB. This external GMII functionality is included in the HDL example design delivered with the core by the IP catalog for 1000BASE-X or 2500BASE-X designs. The extra logic required to accomplish this is described in this appendix.

Note: AMD Virtex™ 7 devices support GMII at 3.3 V or lower only in certain parts and packages; see the AMD Virtex™ 7 Device Documentation.AMD Zynq™ 7000, AMD Kintex™ 7, and AMD Artix™ 7 devices support GMII at 3.3V or lower.