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ttl_serdes_ultrascale: use GTH clock domains

This commit is contained in:
Sebastien Bourdeauducq 2019-01-03 20:50:04 +08:00
parent f007895fad
commit 0972d61e81
1 changed files with 6 additions and 9 deletions
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15
artiq/gateware/rtio/phy/ttl_serdes_ultrascale.py
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@ -3,9 +3,6 @@ from migen import *
from artiq.gateware.rtio.phy import ttl_serdes_generic from artiq.gateware.rtio.phy import ttl_serdes_generic
# SERDES clocks are in dedicated domains to make the implementation
# of the convoluted clocking schemes from AR#67885 less tedious.
class _OSERDESE3(Module): class _OSERDESE3(Module):
def __init__(self, dw, pad, pad_n=None): def __init__(self, dw, pad, pad_n=None):
self.o = Signal(dw) self.o = Signal(dw)
@ -20,8 +17,8 @@ class _OSERDESE3(Module):
p_IS_CLK_INVERTED=0, p_IS_CLKDIV_INVERTED=0, p_IS_RST_INVERTED=0, p_IS_CLK_INVERTED=0, p_IS_CLKDIV_INVERTED=0, p_IS_RST_INVERTED=0,
o_OQ=pad_o, o_T_OUT=self.t_out, o_OQ=pad_o, o_T_OUT=self.t_out,
i_RST=ResetSignal("rtio_serdes"), i_RST=ResetSignal("rtio"),
i_CLK=ClockSignal("rtiox_serdes"), i_CLKDIV=ClockSignal("rtio_serdes"), i_CLK=ClockSignal("rtiox"), i_CLKDIV=ClockSignal("rtio"),
i_D=self.o, i_T=self.t_in) i_D=self.o, i_T=self.t_in)
if pad_n is None: if pad_n is None:
self.comb += pad.eq(pad_o) self.comb += pad.eq(pad_o)
@ -49,11 +46,11 @@ class _ISERDESE3(Module):
p_DATA_WIDTH=dw, p_DATA_WIDTH=dw,
i_D=pad_i, i_D=pad_i,
i_RST=ResetSignal("rtio_serdes"), i_RST=ResetSignal("rtio"),
i_FIFO_RD_EN=0, i_FIFO_RD_EN=0,
i_CLK=ClockSignal("rtiox_serdes"), i_CLK=ClockSignal("rtiox"),
i_CLK_B=ClockSignal("rtiox_serdes"), # locally inverted i_CLK_B=ClockSignal("rtiox"), # locally inverted
i_CLKDIV=ClockSignal("rtio_serdes"), i_CLKDIV=ClockSignal("rtio"),
o_Q=Cat(*[self.i[i] for i in reversed(range(dw))])) o_Q=Cat(*[self.i[i] for i in reversed(range(dw))]))
if pad_n is None: if pad_n is None:
self.comb += pad_i.eq(pad) self.comb += pad_i.eq(pad)