Hey awesome folks! For MPW, can we connect the external
clock
pin into
user_project_wrapper
? It should be possible by minimally changing some RTL. I would buffer it before passing into
user_project_wrapper
to minimize the impact on PLL/DCO. Is there any other concerns that I should be aware of?
m
Matt Venn
05/20/2022, 8:12 AM
the external clock pin goes via pll and then is provided to user_project_wrapper as wb_clk_i
a
Ang Li
05/20/2022, 1:47 PM
Hi @Matt Venn thanks for the reply. I need a clock to synchronize data on the MPRJ IOs. I thought wb_clk_i and user_clock2 are both divided/regenerated clocks, so there might be unknown phase difference between those and the clock on the external clock pin. Are you suggesting that I bypass the PLL/DCO so that wb_clk_i is just buffered external clock so there is a fixed phase difference?
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