Cadence Q DRIVE SERIES User Manual download pdf (Page 13)

Appendix B

To understand the timing report, first right-click on your mouse button when you are on

the schematic window. Select “worst path” to highlight the most timing critical path as

shown in Figure 3 and compare this with your timing report.

Figure 3

Now it is time to open the timing.rpt file under “synthesis/report” directory and examine

its contents.

module_clock

ff3

mx1

ff8

sel

cout

sumcin

out

0104

module_clock

time

arrive = 0

arrive = 8.05

arrive = 28.17

arrive = 35.46

arrive = 43.50

T = 10

delay = 8.05

delay = 20.12 delay = 7.29 delay = 8.04

SET UP VIOLATION = 10 - 43.50 = -33.50

SET UP VIOLATION = 10 - 43.50 = -33.50SET UP VIOLATION = 10 - 43.50 = -33.50

SET UP VIOLATION = 10 - 43.50 = -33.50

1 2 ... 8 9 10 11 12 13 14

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Cadence Q DRIVE SERIES User Manual Page 13