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Altera_Forum
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10 years ago

FT232RL as a clock for a Acex EP1K50TC144-3 fpga

Hi, This is my first post on the Altera forum :) I don't know if there is someone who has knowledge using an "old" Acex EP1K50TC144-3 fpga. I'm using a FT232RL chip which is capable o...
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Altera_Forum
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10 years ago

Why do you need the pull-up? CBUS4 contains a complete buffer and shouldn't need any external pull-up. The 560R you mention could well be loading the signal such that it's shape changes. Have you tried removing it?

You're certainly right to take it into a dedicated clock pin. This shouldn't load the CBUS4 buffer unduly. I assume you don't have anything else loading this net? And you're powering the bank that the dedicated clock pin resides in at 3.3V?

Happy New Year,

Alex