set_min_library and set_operating

set_min_library and set_operating_conditions

mayer | 2009-07-19 11:37:13 阅读：4098

set_min_library and set_operating_conditions

	Target library	Link library	Set_min_library	Set_operating_conditions	result
Setup time	Hold time
1	Slow.db	* slow.db	x	x	Slow slow	Slow slow
2	Slow.db	* slow.db	Set_min_library slow.db –min_version fast.db	Set_operating_conditions -max slow –max_lib slow –min fast –min_lib fast	Slow slow	Fast fast
3	Slow.db	* fast.db slow.db	x	x	Slow slow	Slow slow
4	Slow.db	* fast.db slow.db	Set_min_library slow.db –min_version fast.db	Set_operating_conditions -max slow –max_lib slow –min fast –min_lib fast	Slow slow	Fast fast
5	Slow.db	* slow.db fast.db	Set_min_library slow.db –min_version fast.db	Set_operating_conditions -max slow –max_lib slow –min fast –min_lib fast	Slow slow	Fast fast
6	Slow.db	* slow.db fast.db	x	x	Slow slow	Slow slow
7	Fast.db	* fast.db	x	x	Fast fast	Fast fast
8	Fast.db	* fast.db	Set_min_library slow.db –min_version fast.db	Set_operating_conditions -max slow –max_lib slow –min fast –min_lib fast	Slow slow	Fast fast
9	Fast.db	* slow.db fast.db	x	x	Fast fast	Fast fast
10	Fast.db	* slow.db fast.db	Set_min_library slow.db –min_version fast.db	Set_operating_conditions -max slow –max_lib slow –min fast –min_lib fast	Slow slow	Fast fast

1，从slow.db中找到了default_operating_conditions为slow，没有设置set_min_library和set_operating_conditions，那么就使用slow.db中的slow operating condition进行min和max timing分析。

2，从slow.db中找到了default_operating_conditions为slow，设置set_min_library的时候将fast.db读入到memory中，现在memory中一共两个库，slow.db和fast.db，set_operating_conditions，fast和slow条件均在相应的库中找到，设置有效，max使用slow operating condition,min使用fast operating condition，由于设置了set_min_library，就使用这个设置的库进行分析

3，set_operating_conditions中的库没有后缀，切记！！！！

4，可以查看3和9的operating condition 分别是fast和slow，但是最后进行setup time分析的时候用的是target lib，条件也是其中的条件。

5，一般的set_min_library slow.db -min_version fast.db，其中的min_version不要出现在link library中。

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