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Altera_Forum
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8 years ago

Effect of nCE (Chip Enable)

Does nCE=High only disable the Configuration pins or would other pins also be affected? And does "disable" imply that the affected pins are high impedance? What happens if nCE is driven high in...
Altera_Forum's avatar
Altera_Forum
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8 years ago

nCE has a purpose in two situations

- multiple FPGAs configured from a single memory

- enabling access to the AS or AP configuration memory for an external host

If non of these conditions apply, nCE would be permanently tied to GND.