A skew-tolerant, glitch-free reset distribution apparatus and method are
provided in an intellectual property (IP) block that supports a
multi-channel input/output protocol. During reset mode, synchronizers are
used to create more predictable timing, to pipeline the propagation
delay, and to tolerate RC-induced skews of up to a clock period in
routing a reset signal to all the channels and within the channels in an
IP block. Two control signals, which are available from programmable
logic resource core circuitry, are used to control the input of the reset
signal into the IP block. Because the control signals are designed to be
glitch-free, the reset signal is therefore also glitch-free, thus
preventing the IP block from inadvertently transitioning into or out of
reset mode.