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jesd204: remove ibuf_disable 

We use the MOSFET to mute the HMC7043 noise on hardware v2 instead.
This commit is contained in:
Sebastien Bourdeauducq 2019-10-06 22:26:31 +08:00
parent 1bc7743e03
commit 97a0dee3e8
1 changed files with 1 additions and 2 deletions
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3
artiq/gateware/jesd204_tools.py
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@ -20,7 +20,6 @@ class UltrascaleCRG(Module, AutoCSR):
fabric_freq = int(125e6) fabric_freq = int(125e6)
def __init__(self, platform, use_rtio_clock=False): def __init__(self, platform, use_rtio_clock=False):
self.ibuf_disable = CSRStorage(reset=1)
self.jreset = CSRStorage(reset=1) self.jreset = CSRStorage(reset=1)
self.refclk = Signal() self.refclk = Signal()
self.clock_domains.cd_jesd = ClockDomain() self.clock_domains.cd_jesd = ClockDomain()
@ -29,7 +28,7 @@ class UltrascaleCRG(Module, AutoCSR):
refclk_pads = platform.request("dac_refclk", 0) refclk_pads = platform.request("dac_refclk", 0)
platform.add_period_constraint(refclk_pads.p, 1e9/self.refclk_freq) platform.add_period_constraint(refclk_pads.p, 1e9/self.refclk_freq)
self.specials += [ self.specials += [
Instance("IBUFDS_GTE3", i_CEB=self.ibuf_disable.storage, p_REFCLK_HROW_CK_SEL=0b00, Instance("IBUFDS_GTE3", i_CEB=0, p_REFCLK_HROW_CK_SEL=0b00,
i_I=refclk_pads.p, i_IB=refclk_pads.n, i_I=refclk_pads.p, i_IB=refclk_pads.n,
o_O=self.refclk, o_ODIV2=refclk2), o_O=self.refclk, o_ODIV2=refclk2),
AsyncResetSynchronizer(self.cd_jesd, self.jreset.storage), AsyncResetSynchronizer(self.cd_jesd, self.jreset.storage),