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发表于 2011-10-31 14:42:40
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NAME
specifyNetWeight
SYNTAX
specifyNetWeight
<netName> <...>
<netWeightValue>
DESCRIPTION
Specifies the priority weighting of a net.
Note: Partition pin assignment honors specifyNetWeight. Pins that connect to a net that has a higher net weight are assigned before the pins that con-
nect to a net with a lower net weight.
You can use this command after importing the design.
Parameters
<..> Specifies the name(s) of an individual net.
You can use wildcards (*?) with this parameter.
<netWeightValue> Specifies the weighting priority of the
net name, with values 512 (highest) through 1
(lowest), or 0 (dont care). Default: If you do
not specify this parameter, the weight for nets is
2. Cadence recommends using a value between 1 to
10. The maximum net weight is 512. If you set the
value greater than 512, the value will be set at
512.
Examples
The following commands set the priority net weighting for nets STRW to first, WE2N to second, and IOWIN to third:
specifyNetWeight WE2N 9
好像是 做pin assign用的吧 |
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