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Altera_Forum
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12 years ago

XAUI IP Core compilation problem

Hi, I am designing a state machine to send a UDP packet through XAUI. The packet will be divided into 72 bits and reach a XAUI PHY IP Core produced by Megafunction. So basically it is not so compl...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Thank you very much !

As you said, the problem was the incorrect port connection at the top level.

So Analysis and synthesis was successful. However, I faced another error that is,

Error (177035): The input pin hsma_rx_n[0] assigned to HSSI Pin_U1 has no fanout.

Error (177035): The input pin hsma_rx_n[1] assigned to HSSI Pin_R1 has no fanout.

Error (177035): The input pin hsma_rx_n[2] assigned to HSSI Pin_N1 has no fanout.

Error (177035): The input pin hsma_rx_n[3] assigned to HSSI Pin_L1 has no fanout.

I have connected the positive pins directly to the DATAIN port of the IP Core. But I don't really know where I should connect the negative ones to. Probably a voltage value of (negative - positive) should be the correct one to go into the DATAIN port instead of only the positive one itself. However I couldn't figure out how to subtract a voltage signal from another.

Your helpful advise would be greatly appreciated again.