19 lines
568 B
Python
19 lines
568 B
Python
from migen.fhdl.structure import *
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from migen.fhdl.specials import Special
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class AsyncResetSynchronizer(Special):
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def __init__(self, cd, async_reset):
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Special.__init__(self)
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self.cd = cd
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self.async_reset = async_reset
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def iter_expressions(self):
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yield self.cd, "clk", SPECIAL_INPUT
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yield self.cd, "rst", SPECIAL_OUTPUT
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yield self, "async_reset", SPECIAL_INPUT
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@staticmethod
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def lower(dr):
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raise NotImplementedError("Attempted to use a reset synchronizer, but platform does not support them")
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