ModuleWare Reference Guide - Hornad

Stimulus PartsSimple Clock (clk)The default clock has a rising edge. You can invert the waveform by double-clicking on the red“handle” on the horizontal waveform.Time intervals can optionally be specified in milliseconds (ms), microseconds (us),nanoseconds (ns) or picoseconds (ps). Seconds are assumed if no unit is specified. Spaces areautomatically used between the time value and unit in the generated HDL.Frequencies can be specified in kilohertz (kHz), megahertz (MHz), gigahertz (GHz) or terahertz(THz). If no units are specified, hertz are assumed.ParametersTable 11-1. Simple Clock ParametersParameter Values DefaultLabelFrequencyClock PeriodStop AtRun ForeverInitial ValueTiming OffsetCycle TimeDuty CycleA unique HDL identifierReal number (optionally in kHz, MHz, GHz or THz)Real number (optionally in ms, us, ns or ps)Real number (optionally in ms, us, ns or ps)On or Off0, 1, X or ZReal number (optionally in ms, us, ns or ps)Real number (optionally in ms, us, ns or ps)Calculated from the cycle timeclk10.00MHz100ns1000nsOff00ns50ns50%Checks• An entry error is issued if invalid time units are specified in the dialog box or if a parameteris outside its permitted range.ModuleWare Reference Manual, Library Version 1.9 263September 18, 2008