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Separated relative delay into rise/fall.

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Hunter Nichols
2018-11-14 23:34:53 -08:00
parent e9f6566e59
commit 6e47de3f9b
11 changed files with 97 additions and 51 deletions
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compiler/modules/delay_chain.py
+4 -2
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@@ -225,15 +225,17 @@ class delay_chain(design.design):
dc_cin = self.inv.get_cin()
return dc_cin
def determine_delayed_en_stage_efforts(self, ext_delayed_en_cout):
def determine_delayed_en_stage_efforts(self, ext_delayed_en_cout, inp_is_rise=True):
"""Get the stage efforts from the en to s_en. Does not compute the delay for the bitline load."""
stage_effort_list = []
#Add a stage to the list for every stage in delay chain. Stages only differ in fanout except the last which has an external cout.
last_stage_is_rise = inp_is_rise
for stage_fanout in self.fanout_list:
stage_cout = self.inv.get_cin()*(stage_fanout+1)
if len(stage_effort_list) == len(self.fanout_list)-1: #last stage
stage_cout+=ext_delayed_en_cout
stage = self.inv.get_effort_stage(stage_cout)
stage = self.inv.get_effort_stage(stage_cout, last_stage_is_rise)
stage_effort_list.append(stage)
last_stage_is_rise = stage.is_rise
return stage_effort_list