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Altera_Forum
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18 years ago

RGMII with the triple speed ethernet MAC core

Hello, I have a board with a Stratix II 180 C3 FPGA and a Marvell gigabit Ethernet PHY. The MDIO connection with the Phy works well. I can get the Phy status/id/etc. I also receive Ethernet pac...
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Altera_Forum
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14 years ago

I had the same problems:

Terasic DE2 Evaluation Board with Marvel 88E1111:

I use the TSE-Core from Altera, connected over RGMII.

I do no special setup of the Marvel Chip, because I also have no datasheet.

The hint with the 90deg phase was the solution. I created a PLL for the 125 MHz signal. The 0-degree frequency goes into the TX_clock of the IP-core.

The 90-degree freqency goes into the PHY GTX clock.

Then sending of a frame succeeds.