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pipistrello: shrink fifos a bit more to relax pnr

This commit is contained in:
Robert Jördens 2016-07-23 12:27:34 +02:00
parent ecda94705e
commit 454b48df97
1 changed files with 5 additions and 7 deletions
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12
artiq/gateware/targets/pipistrello.py
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@ -176,7 +176,7 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
phy = ttl_serdes_spartan6.Inout_4X(platform.request("pmt", i),
self.rtio_crg.rtiox4_stb)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=512,
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=256,
ofifo_depth=4))
# the last TTL is used for ClockGen
@ -191,7 +191,7 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
phy = ttl_simple.Output(platform.request("ttl", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ofifo_depth=256))
rtio_channels.append(rtio.Channel.from_phy(phy, ofifo_depth=128))
phy = ttl_simple.Output(platform.request("ext_led", 0))
self.submodules += phy
@ -202,19 +202,17 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ofifo_depth=4))
spi_pins = self.platform.request("pmod_extended_spi", 0)
self.config["RTIO_REGULAR_TTL_COUNT"] = len(rtio_channels)
phy = ttl_simple.ClockGen(platform.request("ttl", 15))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
phy = spi.SPIMaster(spi_pins)
phy = spi.SPIMaster(self.platform.request("pmod_extended_spi", 0))
self.submodules += phy
self.config["RTIO_FIRST_SPI_CHANNEL"] = len(rtio_channels)
rtio_channels.append(rtio.Channel.from_phy(
phy, ofifo_depth=256, ififo_depth=256))
phy, ofifo_depth=64, ififo_depth=64))
self.config["RTIO_FIRST_DDS_CHANNEL"] = len(rtio_channels)
self.config["RTIO_DDS_COUNT"] = 1
@ -225,7 +223,7 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
phy = dds.AD9858(dds_pins, 8)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy,
ofifo_depth=512,
ofifo_depth=256,
ififo_depth=4))
self.config["RTIO_LOG_CHANNEL"] = len(rtio_channels)