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sayma_amc: use high-resolution TTL on SMAs (#792)

This commit is contained in:
Sebastien Bourdeauducq 2019-01-03 20:50:38 +08:00
parent 0972d61e81
commit 62d7c89c48
1 changed files with 10 additions and 7 deletions
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17
artiq/gateware/targets/sayma_amc.py
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@ -18,7 +18,7 @@ from artiq.gateware import fmcdio_vhdci_eem
from artiq.gateware import serwb, remote_csr
from artiq.gateware import rtio
from artiq.gateware import jesd204_tools
from artiq.gateware.rtio.phy import ttl_simple, sawg
from artiq.gateware.rtio.phy import ttl_simple, ttl_serdes_ultrascale, sawg
from artiq.gateware.drtio.transceiver import gth_ultrascale
from artiq.gateware.drtio.siphaser import SiPhaser7Series
from artiq.gateware.drtio.rx_synchronizer import XilinxRXSynchronizer
@ -163,6 +163,9 @@ class Standalone(MiniSoC, AMPSoC, RTMCommon):
phy = ttl_simple.Output(platform.request("user_led", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
# To work around Ultrascale issues (https://www.xilinx.com/support/answers/67885.html),
# we generate the multiplied RTIO clock using the DRTIO GTH transceiver.
# Since there is no DRTIO here and therefoere no multiplied clock, we use ttl_simple.
sma_io = platform.request("sma_io", 0)
self.comb += sma_io.direction.eq(1)
phy = ttl_simple.Output(sma_io.level)
@ -338,12 +341,12 @@ class MasterDAC(MiniSoC, AMPSoC, RTMCommon):
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 0)
self.comb += sma_io.direction.eq(1)
phy = ttl_simple.Output(sma_io.level)
phy = ttl_serdes_ultrascale.Output(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 1)
self.comb += sma_io.direction.eq(0)
phy = ttl_simple.InOut(sma_io.level)
phy = ttl_serdes_ultrascale.InOut(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
@ -497,12 +500,12 @@ class Master(MiniSoC, AMPSoC):
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 0)
self.comb += sma_io.direction.eq(1)
phy = ttl_simple.Output(sma_io.level)
phy = ttl_serdes_ultrascale.Output(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 1)
self.comb += sma_io.direction.eq(0)
phy = ttl_simple.InOut(sma_io.level)
phy = ttl_serdes_ultrascale.InOut(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
@ -575,12 +578,12 @@ class Satellite(BaseSoC, RTMCommon):
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 0)
self.comb += sma_io.direction.eq(1)
phy = ttl_simple.Output(sma_io.level)
phy = ttl_serdes_ultrascale.Output(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
sma_io = platform.request("sma_io", 1)
self.comb += sma_io.direction.eq(0)
phy = ttl_simple.InOut(sma_io.level)
phy = ttl_serdes_ultrascale.InOut(4, sma_io.level)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))