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mdidomenico3
New Contributor
1 year agofPLL to IOPLL cascading | Stratix 10
I am working on a design in which I'd like to receive transceiver data synchronous to an fPLL clock, and then transfer that data to another part of a design using a collection of synchronous I/O PLL generated clocks. Is there any guidance or documentation for cascading an fPLL clock to an I/O PLL such that the fPLL output clock (I/O PLL reference clock) is phase aligned/synchronous to the I/O PLL output clocks?
Thanks!
1 Reply
- mdidomenico3
New Contributor
After looking into this more, it looks like the I/O PLL does not lock when fed by the fPLL at all, is there any guidance regarding this?