Why is the option to "Use differential mode" greyed-out in the ALTIOBUF IP core? - Intel Community

Intel® Quartus® Prime Software

Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)

Why is the option to "Use differential mode" greyed-out in the ALTIOBUF IP core?

976 Views

According to AN 522, differential mode is supported in Cyclone III devices. I am using Quartus 9.1 and cannot upgrade.

Link Copied

1 Reply

892 Views

Hi SLuon2,

ALTIOBUF IP core is not supported Cyclone III.

You may refer to ALTIOBUF IP user guide below for supported devices:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_altiobuf.pdf

Thanks

Copy link

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.