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clock relation Chapter 5. Tcl Command Reference

[-net <arg>] Optional use the domain of this net

[-unique] Optional use a unique domain for

domains with the same

frequency

[-multi] Optional with -net or -pin: report a list of

domains instead of a single

domain

[-xp <arg>] Optional select xp value, for use with -freq

[-best] Optional select best frequency, for use

with -freq

[-freq] Optional return the frequency (MHz);

requires a domain

[-period] Optional return the period (ps); requires a

domain

[-phase] Optional return the phase; requires a

domain

[-get xp] Optional return the xp value; requires a

domain

[-edge type] Optional 1 for pos-edge, -1 for neg-edge, 0

for combinational; requires a

domain

[-routing type] Optional string denoting the routing type,

empty if not set; requires a

domain

[-core] Optional 1 if used in the core, otherwise 0;

or list of domains used in core

[-driver] Optional name of the driving pin or port;

requires a domain

[-clock net] Optional name of the clock net; requires a

domain

[-xplist] Optional list of xp values; requires a

domain

[-info] Optional list as for ’array set’; requires a

domain

[-group] Optional list of related domains, or list of

groups

[-equal] Optional list of domains with same

frequency; requires a domain

[-sdc] Optional return list of sdc commands

clock relation

clock relation <domain1> <domain2> [-default] [-group] [-sdc]

Return relation between clocks. For related clocks the return is a list with 5 values: the word ”related”

followed by T1 T2 e1 e2. T is the abstract period: T1/T2 = period1/period2. e is an abstract offset (in the

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