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Altera_Forum
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14 years ago

Programming CPLD second time

Hello everybody, My test guys are having a problem programming our CPLD's, but only on the second time around when the CPLD already has a POF loaded. This would indicate to me that the CPL...
Altera_Forum's avatar
Altera_Forum
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14 years ago

DEV_OE functionaility has to be enabled in the CPLD code, you should know if it has any effect in your case. Stopping the input clock would be the most promising method to suppress possible interferences,

I generally agree about the random guess. By the way, an effective method to lock up further JTAG programming would be to disable the JTAG interface in the design.