9.3.25 Slew

The slew rate is the amount of rise or fall time an input signal takes to get from logic low to logic high or vice versa. It is commonly defined to be the propagation delay between 10% and 90% of the signal's voltage swing. The I/O Editor supports slew rate control in non-differential output mode. Turning the slew rate on results in faster slew rate, which improves the available timing margin. When slew rate is turned off, the device uses the default slew rate to reduce the impact of SSN. By default, the slew control is OFF. Not all I/O standards support the slew rate control.