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suservo: fix clkout cd drive

This commit is contained in:
Robert Jördens 2018-04-24 10:18:32 +00:00
parent f74998a5e0
commit 3942c2d274
1 changed files with 5 additions and 4 deletions
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9
artiq/gateware/targets/kasli.py
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@ -544,7 +544,8 @@ class SUServo(_StandaloneBase):
clkout = Signal()
clkout_fabric = Signal()
self.specials += [
DifferentialInput(pads.clkout_p, pads.clkout_n, clkout),
DifferentialInput(
sampler_pads.clkout_p, sampler_pads.clkout_n, clkout),
Instance("BUFH", i_I=clkout, o_O=clkout_fabric),
Instance("BUFIO", i_I=clkout, o_O=su.adc.clkout_io)
]
@ -602,12 +603,12 @@ class SUServo(_StandaloneBase):
self.add_rtio(rtio_channels)
platform.add_period_constraint(su.adc.cd_ret.clk, 8.)
platform.add_period_constraint(self.cd_ret.clk, 8.)
platform.add_false_path_constraints(
su.adc.cd_ret.clk,
self.cd_ret.clk,
self.rtio_crg.cd_rtio.clk)
platform.add_false_path_constraints(
su.adc.cd_ret.clk,
self.cd_ret.clk,
self.crg.cd_sys.clk)