Forum Discussion
Altera_Forum
Honored Contributor
16 years agookay some question first,
do you use the sopc builder with the cfi flash controller ? in that case did you check that the timing tab has the correct setup access and hold timing according to your cfi flash ? is the write protect pin of the cfi flash pulled to a "enable" level or left floating ? during programming of the cfi flash, could it be that anything else is accessing this device ? interrupt routine stored there ... the reason is during programming you must enshure that there is no access to this device that disturbs the programming sequence.