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qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Calculate skew timing with Cyclone V and ksz9031

hello, i have troubles with the ethernet bandwith and retransmissions (ack). after some diagnostic i think it is an timing issue. the wire length from the fpga -> knz9031 is: mil ...
qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

Hello,

the retransmission error results from an to low voltage supply for the ksz9031.

DVDDL was 0,1mV to low.

thanks for your support.