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phaser: false paths sys<->{jesd,phy.tx}

This commit is contained in:
Robert Jördens 2016-11-21 09:57:33 +01:00
parent 9221a275cb
commit 174c4be218
1 changed files with 9 additions and 5 deletions
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14
artiq/gateware/targets/kc705.py
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@ -451,7 +451,7 @@ class AD9154JESD(Module, AutoCSR):
qpll = GTXQuadPLL(refclk, refclk_freq, linerate) qpll = GTXQuadPLL(refclk, refclk_freq, linerate)
self.submodules += qpll self.submodules += qpll
phys = [] self.phys = []
for i in range(4): for i in range(4):
phy = JESD204BPhyTX( phy = JESD204BPhyTX(
qpll, platform.request("ad9154_jesd", i), fabric_freq) qpll, platform.request("ad9154_jesd", i), fabric_freq)
@ -459,9 +459,9 @@ class AD9154JESD(Module, AutoCSR):
platform.add_period_constraint(phy.gtx.cd_tx.clk, 40*1e9/linerate) platform.add_period_constraint(phy.gtx.cd_tx.clk, 40*1e9/linerate)
platform.add_false_path_constraints(self.cd_jesd.clk, platform.add_false_path_constraints(self.cd_jesd.clk,
phy.gtx.cd_tx.clk) phy.gtx.cd_tx.clk)
phys.append(phy) self.phys.append(phy)
to_jesd = ClockDomainsRenamer("jesd") to_jesd = ClockDomainsRenamer("jesd")
self.submodules.core = to_jesd(JESD204BCoreTX(phys, settings, self.submodules.core = to_jesd(JESD204BCoreTX(self.phys, settings,
converter_data_width=32)) converter_data_width=32))
self.submodules.control = to_jesd(JESD204BCoreTXControl(self.core)) self.submodules.control = to_jesd(JESD204BCoreTXControl(self.core))
@ -595,8 +595,12 @@ class Phaser(MiniSoC, AMPSoC):
self.config["RTIO_FINE_TS_WIDTH"] = self.rtio.fine_ts_width self.config["RTIO_FINE_TS_WIDTH"] = self.rtio.fine_ts_width
platform.add_false_path_constraints( platform.add_false_path_constraints(
self.crg.cd_sys.clk, self.crg.cd_sys.clk, self.rtio_crg.cd_rtio.clk)
self.rtio_crg.cd_rtio.clk) platform.add_false_path_constraints(
self.crg.cd_sys.clk, self.ad9154.jesd.cd_jesd.clk)
for phy in self.ad9154.jesd.phys:
platform.add_false_path_constraints(
self.crg.cd_sys.clk, phy.gtx.cd_tx.clk)
def main(): def main():