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ElasticBuffer: infer reset

This commit is contained in:
Robert Jordens 2016-10-14 09:43:09 +02:00 committed by Florent Kermarrec
parent 4362e5c528
commit 677243bd8c
1 changed files with 5 additions and 4 deletions
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9
litex/gen/genlib/cdc.py
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@ -144,21 +144,22 @@ class GrayCounter(Module):
class ElasticBuffer(Module): class ElasticBuffer(Module):
def __init__(self, width, depth, idomain, odomain): def __init__(self, width, depth, idomain, odomain):
self.reset = Signal()
self.din = Signal(width) self.din = Signal(width)
self.dout = Signal(width) self.dout = Signal(width)
# # # # # #
reset = Signal()
cd_write = ClockDomain() cd_write = ClockDomain()
cd_read = ClockDomain() cd_read = ClockDomain()
self.comb += [ self.comb += [
cd_write.clk.eq(ClockSignal(idomain)), cd_write.clk.eq(ClockSignal(idomain)),
cd_read.clk.eq(ClockSignal(odomain)) cd_read.clk.eq(ClockSignal(odomain)),
reset.eq(ResetSignal(idomain) | ResetSignal(odomain))
] ]
self.specials += [ self.specials += [
AsyncResetSynchronizer(cd_write, self.reset), AsyncResetSynchronizer(cd_write, reset),
AsyncResetSynchronizer(cd_read, self.reset) AsyncResetSynchronizer(cd_read, reset)
] ]
self.clock_domains += cd_write, cd_read self.clock_domains += cd_write, cd_read