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Improve output signal quality from Stratix IV GT transceiver

Altera_Forum
Honored Contributor II
‎03-01-2012 08:57 AM
1,137 Views

Hi All 

 

I am evaluating 10G gigabit ethernet transceiver (using ALTGX macro) on Stratix IV GT FPGA (EP4S40G5H40I1). 

 

I did the test on FPGA board by loopback (port itself and between ports) at SFP. 

 

I just achieved bandwdith 10000Mbps in each port while my target is 10312.5 Mbps. 

 

Now I want to improve the output signal quality from FPGA pins to SFP connector by setting the analog parameters of ALTGX macro in MegaWizard but I don't unsderstand the analog deeply. 

 

Could you give me some tips for setting these parameters or show me some ways to improve the output signal quality from transceiver? 

 

 

Thanks 

Thuyet
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