Cyclone IV GX dev kit HSMC connection buned MAXII BGA chip

HI, according to the Cyclone IV GX reference manual (p.38 under HSMC subtitle), it says "The HSMC port A interface has programmable bi-directional I/O pins that can be used as 2.5-V LVCMOS, which is 3.3-V LVTTL-compatible."

With that, is 3.3V permitted as input signal for HSMC Port A?

Or only max up to 2.5V is accepted?

If I supply 3.3V as input signal voltage to HSMC Port A, is there the possibility that it causes the MAXII to burn?