occheung/artiq
1
0
Fork 0
forked from M-Labs/artiq
Code Pull Requests Activity

ttl_serdes_7series: cleanup

Browse Source
This commit is contained in:
Sebastien Bourdeauducq 2021-02-07 21:33:21 +08:00
parent db25f4e8f7
commit 88c212b84f
1 changed files with 44 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
artiq/gateware/rtio/phy/ttl_serdes_7series.py
View File

@ -4,7 +4,8 @@ from artiq.gateware.rtio.phy import ttl_serdes_generic
class _OSERDESE2_8X(Module):
def __init__(self, pad, pad_n=None, invert=False):
def __init__(self, invert=False):
self.ser_out = Signal()
self.o = Signal(8)
self.t_in = Signal()
self.t_out = Signal()
@ -12,12 +13,11 @@ class _OSERDESE2_8X(Module):
# # #
o = self.o
pad_o = Signal()
self.specials += Instance("OSERDESE2",
p_DATA_RATE_OQ="DDR", p_DATA_RATE_TQ="BUF",
p_DATA_WIDTH=8, p_TRISTATE_WIDTH=1,
p_INIT_OQ=0b11111111 if invert else 0b00000000,
o_OQ=pad_o, o_TQ=self.t_out,
o_OQ=self.ser_out, o_TQ=self.t_out,
i_RST=ResetSignal("rio_phy"),
i_CLK=ClockSignal("rtiox4"),
i_CLKDIV=ClockSignal("rio_phy"),
@ -25,86 +25,83 @@ class _OSERDESE2_8X(Module):
i_D5=o[4] ^ invert, i_D6=o[5] ^ invert, i_D7=o[6] ^ invert, i_D8=o[7] ^ invert,
i_TCE=1, i_OCE=1,
i_T1=self.t_in)
if pad_n is None:
self.comb += pad.eq(pad_o)
else:
self.specials += Instance("IOBUFDS",
i_I=pad_o,
i_T=self.t_out,
io_IO=pad, io_IOB=pad_n)
class _ISERDESE2_8X(Module):
def __init__(self, pad, pad_n=None):
def __init__(self):
self.ser_in = Signal()
self.o = Signal(8)
self.i = Signal(8)
self.oe = Signal()
# # #
pad_i = Signal()
i = self.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_D=self.ser_in,
i_CLK=ClockSignal("rtiox4"),
i_CLKB=~ClockSignal("rtiox4"),
i_CE1=1,
i_RST=ResetSignal("rio_phy"),
i_CLKDIV=ClockSignal("rio_phy"))
if pad_n is None:
self.comb += pad_i.eq(pad)
else:
self.specials += Instance("IBUFDS",
o_O=pad_i,
io_I=pad, io_IB=pad_n)
class _IOSERDESE2_8X(Module):
def __init__(self, pad, pad_n=None):
def __init__(self):
self.o = Signal(8)
self.i = Signal(8)
self.oe = Signal()
# # #
pad_i = Signal()
pad_o = Signal()
iserdes = _ISERDESE2_8X(pad_i)
oserdes = _OSERDESE2_8X(pad_o)
iserdes = _ISERDESE2_8X()
oserdes = _OSERDESE2_8X()
self.submodules += iserdes, oserdes
self.comb += [
self.i.eq(iserdes.i),
oserdes.o.eq(self.o),
oserdes.t_in.eq(~self.oe),
]
self.ser_out = oserdes.ser_out
self.ser_in = iserdes.ser_in
self.t_out = oserdes.t_out
class Output_8X(ttl_serdes_generic.Output):
def __init__(self, pad, pad_n=None, invert=False):
serdes = _OSERDESE2_8X(invert)
self.submodules += serdes
ttl_serdes_generic.Output.__init__(self, serdes)
if pad_n is None:
self.comb += pad.eq(pad_o)
else:
self.specials += Instance("IOBUFDS",
i_I=serdes.ser_out,
i_T=serdes.t_out,
io_IO=pad, io_IOB=pad_n)
class InOut_8X(ttl_serdes_generic.InOut):
def __init__(self, pad, pad_n=None):
serdes = _IOSERDESE2_8X()
self.submodules += serdes
ttl_serdes_generic.InOut.__init__(self, serdes)
if pad_n is None:
self.specials += Instance("IOBUF",
i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out,
i_I=serdes.ser_out, o_O=serdes.ser_in, i_T=serdes.t_out,
io_IO=pad)
else:
self.specials += Instance("IOBUFDS_INTERMDISABLE",
p_DIFF_TERM="TRUE",
p_IBUF_LOW_PWR="TRUE",
p_USE_IBUFDISABLE="TRUE",
i_IBUFDISABLE=~oserdes.t_out,
i_INTERMDISABLE=~oserdes.t_out,
i_I=pad_o, o_O=pad_i, i_T=oserdes.t_out,
i_IBUFDISABLE=~serdes.t_out,
i_INTERMDISABLE=~serdes.t_out,
i_I=serdes.ser_out, o_O=serdes.ser_in, i_T=serdes.t_out,
io_IO=pad, io_IOB=pad_n)
self.comb += [
self.i.eq(iserdes.i),
oserdes.t_in.eq(~self.oe),
oserdes.o.eq(self.o)
]
class Output_8X(ttl_serdes_generic.Output):
def __init__(self, pad, pad_n=None, invert=False):
serdes = _OSERDESE2_8X(pad, pad_n, invert=invert)
self.submodules += serdes
ttl_serdes_generic.Output.__init__(self, serdes)
class InOut_8X(ttl_serdes_generic.InOut):
def __init__(self, pad, pad_n=None):
serdes = _IOSERDESE2_8X(pad, pad_n)
self.submodules += serdes
ttl_serdes_generic.InOut.__init__(self, serdes)