Help: ICE_FLAGS_DEGLITCH

Enables deglitch circuit for MUXCLK inputs


Enables deglitch circuit for MUXCLK inputs.  This is useful for digital
inputs with irregular clocks, such as from a switch matrix in scan mode 
where the input clock may contain small ( < 4 nanosecond) glitches that 
can cause unpredictable behavior in the IOC processor.  This adds a 
slight delay of approximately 5 nanoseconds to the input clock.  For 
clocks > 50MHz, the CLKDLY=N or CLKRE flags may be needed to clock the
data on a clean edge.