Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Best way to use 2 phys in a design?

Hello i have two ethernet interfaces each one with it's own phy. In my current design i am using two ALTERA TSE MAC (small mac), TWO SDGMA_TX, two SDGMA_RX and two descriptor memory and it works w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Since you use the TSE small mac option, you are using 10/100Mbps or (exclusive) 1000Mbps.

If you are using the 10/100 phy, then you can try to switch to the opencores mac. I use it in a design with two ethernet interfaces like yours and each one requires about 2500 LE and 62k memory bits.

If you don't want to change tse, then you may reduce descriptor memory, if your application allows it.