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Altera_Forum's avatar
Altera_Forum
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12 years ago

QuartusII IBUF and OBUF delays

I'm using QuartusII 13.0sp1 and targeting device 5SGXEA7N2F45C2. For a successive run, I'm getting different IBUF and OBUF delays for the same path as shown in the attached screenshot. Initall...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Was the runs under the same conditions: IE was the routing the same?

Or was the temperature Skewed. (IE hot vs cold corners)?

Without looking at the full report, I'm not sure I can answer, but I know voltage level, temperature, and line routing all are part of the timing calculations.

Pete