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Altera_Forum
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11 years ago

cyclone V caacading fpll for sdi ii(transceiver) xcvr_refclk filter error?

I use SDI II ip core, the sdi ii xcvr_refclk , I use the Fractional PLL (fPLL) to supply it . http://www.alteraforum.com/forum/attachment.php?attachmentid=10858&stc=1 http://www.alteraforum.co...
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Altera_Forum
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11 years ago

Hi,

As described in the device handbook, on each side of the device, there are only two fPLL cascade clock lines. There are chances that your design somehow require more than two cascade clock lines which lead Fitter error.