Forum Discussion
Altera_Forum
Honored Contributor
16 years agoThank you FvM!
Sorry for the dalayed reply. I changed the FPGA configuration pin settings to regular I/O and was able to fit the design. The fitter shows Critical Warning: PLL clock inst|....|pll1|clk[1] not driven by a dedicated clock pin or neighboring PLL source. To ensure minimum jitter on memory interface clock outputs, the PLL clock source should be a dedicated PLL input clock pin or an output of the neighboring PLL. & warnings like: *alt_vip_IS2Vid:*|is_serial_output [*] could not be matched with a keeper. (filter problem-mismatch) After simulating altpll in Modelsim, the transcript msg reads Note: Cyclone III PLL locked to incoming clock I'm not familiar with pll & VIP suite and learning it. Kindly guide me.