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| author | Dan Callaghan <dcallagh@google.com> | 2022-02-10 15:48:06 +1100 |
|---|---|---|
| committer | Dan Callaghan <dcallagh@google.com> | 2022-02-10 15:48:06 +1100 |
| commit | 5c300933609b5213322e271a4e745e2d4a101b31 (patch) | |
| tree | ab29034939397edc2c4a10e7f955c947064cb51a /fpga_interchange/site_lut_mapping_cache.cc | |
| parent | 74c99f9195eeb47d106ca74b7abb894cfd47cc03 (diff) | |
| download | nextpnr-5c300933609b5213322e271a4e745e2d4a101b31.tar.gz nextpnr-5c300933609b5213322e271a4e745e2d4a101b31.tar.bz2 nextpnr-5c300933609b5213322e271a4e745e2d4a101b31.zip | |
nexus: reduce OSCA worst case to 7%
The current version of Crosslink-NX Family Data Sheet lists the high
frequency oscillator maximum frequency as 481.5MHz (that is, 7% higher
than its nominal 450MHz):
https://www.latticesemi.com/-/media/LatticeSemi/Documents/DataSheets/CrossLink/FPGA-DS-02049-1-2-1-CrossLink-NX-Family.ashx?document_id=52780
Older documents listed a wider frequency range but ±7% is the range for
production parts.
Diffstat (limited to 'fpga_interchange/site_lut_mapping_cache.cc')
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