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Altera_Forum's avatar
Altera_Forum
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15 years ago

Gigabit Ethernet, Cyclone III and RGMII

I want to interface a gigabit phy to a cycloneIII part using the RGMII as seems to be the case with the 120 Dev kit but upon looking under Switching Characteristics I see that C7 can do 237mhz out an...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The RGMII interface is actually a DDR at 125 MHz. Altera's example design uses a C8, it compiles fine and passes the timing analysis, so there isn't any problem making it run.