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Altera_Forum's avatar
Altera_Forum
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17 years ago

communication with 3.3V devices with cyclone 3

Hi! Currently I have design board with cyclone 3. Cyclone 3 VCCIO supplies are connected to 2.5V. Other devices have 3.3V voltage supply. Regards to Cyclone 3 manual, it can be directly con...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I have one question more regarding cyclone 3 configuration mode and voltage applied to VCCIO.

When VCCIOs are connected to 3.0V is it possible to configure cyclone 3 in FPP mode?

Namely, in manual(
Configuring Cyclone 3 Devices)
are written how to connect Cyclone 3 in FPP mode for configuration voltage standards: 3.3V/2.5V and 1.8/1.5V.

On my board probably up to 4 Cyclone 3 devices will be connected in FPP configuration.

Regards, Amir