What does the C4 GX reconfig block do ?

Altera_Forum · ‎04-23-2012

Ans how do I know it's working ? I just implemented a design using

the 1000base-X/PCS/PMA module only and it works without the

reconfig block, although unreliably. I added a reconfig block, using Mega Wizard, and it won't work at all.

So what's the determing factor for using the reconfig block & how do I

verify it's doing what it should ?

Altera_Forum · ‎04-23-2012

A bit offtopic: maybe You've implemented Ethernet for SFP module?

Reconfig block should reconfig the PLL values and the transceiver itself. E.g. Your link changes speed from 1GbE to 100Mbps.

Altera_Forum · ‎04-23-2012

No, I enabled the sgmii bridge so it's not 1000base-X. Reconfig does not

change the link speed from 125Mhz( Gb) to 25Mhz( 100Mb ). In sgmii

mode, the IP core stays at 125Mhz output clock but with gating signals

if the link is 100Mb or 10Mb.

Reconfig should be adjusting the analog settings although there's no

info on what it's doing.