Description
The Vih and Vil levels for the input buffers of the Stratix and Stratix GX configuration dual-purpose pins depend on the VCCIO of the IO bank where these dual-purpose pins reside.
For an example, if the VCCIO of the IO bank of the DATA0 pin is 3.3V, then the corresponding Vih and Vil levels of the DATA0 input buffer are similar with a 3.3V LVTTL input buffer. The same applies for other VCCIO values, as well. Assume that the IO bank of the DATA0 pin is 1.5V, then the DATA0 input buffer has similar Vih and Vil levels with a 1.5V LVTTL input buffer.
For an example, if the VCCIO of the IO bank of the DATA0 pin is 3.3V, then the corresponding Vih and Vil levels of the DATA0 input buffer are similar with a 3.3V LVTTL input buffer. The same applies for other VCCIO values, as well. Assume that the IO bank of the DATA0 pin is 1.5V, then the DATA0 input buffer has similar Vih and Vil levels with a 1.5V LVTTL input buffer.