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drtio: disable SED lane spread

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Doesn't improve things as the buffer space would still be determined
by the full FIFO, and adds unnecessary logic.
This commit is contained in:
Sebastien Bourdeauducq 2017-09-26 16:46:09 +08:00
parent d7ef07a0c2
commit 73043c3464
1 changed files with 2 additions and 1 deletions
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3
artiq/gateware/drtio/core.py
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@ -91,7 +91,8 @@ class DRTIOSatellite(Module):
self.submodules.outputs = ClockDomainsRenamer("rio")(
SED(channels, fine_ts_width, "sync",
lane_count=lane_count, fifo_depth=fifo_depth,
report_buffer_space=True, interface=self.rt_packet.cri))
enable_spread=False, report_buffer_space=True,
interface=self.rt_packet.cri))
self.comb += self.outputs.coarse_timestamp.eq(coarse_ts)
self.sync += self.outputs.minimum_coarse_timestamp.eq(coarse_ts + 16)