| I |
Output |
Input data from the GPIO pad to the core fabric. |
| ALT |
Output |
Alternative input connection (in the Interface Designer, the
input Register Option is
none). Alternative connections are GCLK,
GCTRL, and PLL_CLKIN. |
| O |
Input |
Output data to GPIO pad from the core fabric. |
| OE |
Input |
Output enable from core fabric to the I/O block. Can be
registered. |
| OUTCLK |
Input |
Core clock that controls the output and OE register. This clock
is not visible in the user netlist. |
| INCLK |
Input |
Core clock that controls the input register. This clock is not
visible in the user netlist. |
