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which portion of the doc are you referring to? note that Table 9-10 applies to AP not AS configuration
the mention device should support AS
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this is what I found confusing, from chapter 9:
Smaller Cyclone III devices or package options (E144, M164, Q240, F256, and U256
packages) do not have the MSEL[3] pin. The AS Fast POR configuration scheme at 3.0-
or 2.5-V configuration voltage standard and the AP configuration scheme are not
supported in Cyclone III devices without the MSEL[3] pin. To configure these devices
with other supported configuration schemes, select the MSEL[2..0] pins according to
the MSEL settings in Table 9–7.
Perhaps this means that the AS fast POR at 3-2.5V is not supported but it is at 3.3V???
So there is no MSEL[3] pin but all the configurations show it used....
Thanks
Rich