Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Phase alignment reference using ALTPLL and ALTPLL_RECONFIG modules

Hi, My system contains a PLL linked to a PLL Reconfig module driven by a microcontroller via the Avalon-MM port. I used the AN661 PDF (altera.com/literature/an/an661.pdf Page 4 and 5) to u...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

First, a correction : for ArriaV family it's not ALTPLL any more, but ALTERA_PLL IP.

Then in the ALTERA_PLL User Guide, it is explained that the pin reset, just reset counters and locked state, not the whole PLL and its config.

So now, I apply the reconfig, then I reset PLL, and the clocks are all aligned.