20 lines
523 B
Python
20 lines
523 B
Python
from migen.fhdl.std import *
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from migen.fhdl.specials import Special
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from migen.fhdl.tools import list_signals
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class DifferentialInput(Special):
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def __init__(self, i_p, i_n, o):
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Special.__init__(self)
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self.i_p = i_p
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self.i_n = i_n
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self.o = o
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def iter_expressions(self):
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yield self, "i_p", SPECIAL_INPUT
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yield self, "i_n", SPECIAL_INPUT
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yield self, "o", SPECIAL_OUTPUT
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@staticmethod
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def lower(dr):
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raise NotImplementedError("Attempted to use a differential input, but platform does not support them")
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