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ttl_serdes_7series: refactor IOSERDES

This commit is contained in:
Robert Jördens 2018-01-02 12:59:41 +01:00
parent b7f38b123b
commit 6d20b71dde
1 changed files with 3 additions and 12 deletions
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15
artiq/gateware/rtio/phy/ttl_serdes_7series.py
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@ -67,19 +67,9 @@ class _IOSERDESE2_8X(Module):
pad_i = Signal() pad_i = Signal()
pad_o = Signal() pad_o = Signal()
i = self.i iserdes = _ISERDESE2_8X(pad_i)
self.specials += Instance("ISERDESE2", p_DATA_RATE="DDR",
p_DATA_WIDTH=8,
p_INTERFACE_TYPE="NETWORKING", p_NUM_CE=1,
o_Q1=i[7], o_Q2=i[6], o_Q3=i[5], o_Q4=i[4],
o_Q5=i[3], o_Q6=i[2], o_Q7=i[1], o_Q8=i[0],
i_D=pad_i,
i_CLK=ClockSignal("rtiox4"),
i_CLKB=~ClockSignal("rtiox4"),
i_CE1=1, i_RST=0,
i_CLKDIV=ClockSignal("rio_phy"))
oserdes = _OSERDESE2_8X(pad_o) oserdes = _OSERDESE2_8X(pad_o)
self.submodules += oserdes self.submodules += iserdes, oserdes
if pad_n is None: if pad_n is None:
self.specials += Instance("IOBUF", self.specials += Instance("IOBUF",
i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out, i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out,
@ -89,6 +79,7 @@ class _IOSERDESE2_8X(Module):
i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out, i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out,
io_IO=pad, io_IOB=pad_n) io_IO=pad, io_IOB=pad_n)
self.comb += [ self.comb += [
self.i.eq(iserdes.i),
oserdes.t_in.eq(~self.oe), oserdes.t_in.eq(~self.oe),
oserdes.o.eq(self.o) oserdes.o.eq(self.o)
] ]