Some problems about Arria II GX kits used ethernet

Question

Hello,everyone.I used the arria ii gx kit to ethernet development which reference tohttp://www.alterawiki.com/wiki/nios_ii_ethernet_standard_rgmii_design_example.

I could operated the example successfully,but i found the speed of ethernet is not good.I want to use the 1000Mbps,but only 100Mbps.So i have some questions about it:

1.How to use the 1000Mbps of ethernet speed in the arria ii gx kit?

2.My actual speed only 2MBytes per second,how to accelerating the ethernet speed?

Thanks.

altera_forum · Answer

Is the board connected to Your computer or a switch? The device You connected to is 100Mbps speed only.

altera_forum · Answer

Thanks for help.My board is server,computer is client.The TSE MegaCore and 88E1111 are support the 10/100/1000Mbps.How to choosed the GBE mode?

altera_forum · Answer

It is alreadi chosen, since it shows RGMII. There are 3 possibilities:

1) Your computer is only capable of 100/10Mbps.

2) You use China Cat5e cable, which has only 2 pairs instead of required 4 pairs.

3) You set Ena1000 to 0 in the TSE interface.

altera_forum · Answer

Hi,my board is already connected to 1000Mpbs mode,but i modified line 253 in altera_avalon_tse.h to

"#define ALTERA_TSE_MAC_SPEED_DEFAULT TSE_PHY_SPEED_1000" .

But i don't know why it is not auto-negotiation to 1000Mbps.Could you tell me how to set the ENA1000 to 1 in the TSE interface.I don't know where the set up of TSE interface.

altera_forum · Answer

check the sopc system instantiation file for "set_1000_to_the_tse_mac"

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Some problems about Arria II GX kits used ethernet

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