Unused Transceivers in Arria 10

Question

Hi,I am using quartus 18.1 Standard edition.FPGA : Arria 10 : 10AX066N2F40E1HGI was advised to use the following setting in QSF to protect the unused transceivers from degrading.set_global_assignment -name PRESERVE_UNUSED_XCVR_CHANNEL ONHow can unused transceivers degrade?Regards,Manoj

fvm · Answer

Hi,there's a paragraph in PHY users manual describing the issue: "3.8. Unused/Idle Clock Line Requirements". The degradation mechanism isn't explained exactly though.

wz2 · Answer

Hi there,Some users might power up transceiver banks normally, even though they don’t use these banks in their design. In such cases, it’s possible for issues similar to those mentioned in this Intel article to occur:https://www.intel.com/content/www/us/en/docs/programmable/683617/21-1/unused-idle-clock-line-requirements.htmlBest regards,wz

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Unused Transceivers in Arria 10

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