Intel: I want to configure my Stratix IV device in FPP mode, how many MHz can I use DCLK for?
The Max DCLK value for Stratix IV GX devices is up to 125MHz (for FPP).
For details, refer to the Configuration and JTAG Specifications item on page 54 of the URL link below.
https://www.altera.com/en_US/pdfs/literature/hb/stratix-iv/stx4_5v4.pdf
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