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Altera_Forum
Honored Contributor
14 years agoCyclone III PLL not locking after reconfig
I'm using dynamic reconfiguration to change frequencies of a Cyclone PLL. I'm using the ALTPLLRECONFIG and ALTPLL IPs. When I load the new parameters and send configupdate I lose lock as expecte...
Altera_Forum
Honored Contributor
13 years agoThis can happen on stratix 3 FPGA when the re programmed frequency is too low (Like 5 MHz with an input of 20 MHz).