How does one, using the Virtex-4 datasheet, calculate IOB setup and hold time requirements and global clock-to-out time for IO standards other than LVCMOS25 fast 12mA?
Thanks in advance, Bob
Xilinx -- please help with Virtex-4 datasheet
May 23, 2006
1 Replies
Bob,
For IO timing, we specify the one standard, and use the following method:
Simulate the IO standard we use as the standard with the pcb traces, package, and load in a SI program (liek Hyperlynx).
The simulate the same IO with your specific standard.
The difference in timing, will be the difference from the standard.
Aust> How does one, using the Virtex-4 datasheet, calculate IOB setup and hold
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