Digi NS7520 manual Timing Diagrams, TimingSpecifications

E l e c t r i c a l C h a r a c t e r i s t i c s

Timing Diagrams

Timing_Specifications

All timing specifications consist of the relationship between a reference clock and a signal:

There are bussed and non–bussed signals. Non–bussed signals separately illustrate 0–to–1 and 1–to–0 transitions.

Inputs have setup/hold times versus clock rising.

Outputs have switching time relative to either clock rising or clock falling.

Note: Timing relationships in this diagram are drawn without proportion to actual delay.

Clock
Signal			0-to-1 from rising	edge			1-to-0 from rising edge
	0-to-1 from falling	edge			1-to-0 from falling	edge
		Setup time
			Hold time
	Valid from falling	edge					Valid from rising edge
Bus
		Setup time					Hold

w w w . d i g i . c o m 2 6 9