Clock_relation, 18 clock relation, Clock relation – Achronix ACE Version 5.0 User Manual
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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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UG001 Rev. 5.0 - 5th December 2012