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Altera_Forum
Honored Contributor
17 years agoYou can use VCCIO of 2.5V for JTAG and configuaration. All pull-up resistors and JTAG connector VCC should be wired to the respective VCCIO voltages. There may be a problem with Altera AS devices, that are not available with other supply voltages than 3.3V up to now. Output pins to AS memory should reside in a 3.3V powered bank by specification, otherwise the high level margin would be too low.