def __init__(self, clk_freq, rate, speedgrade=None, fine_refresh_mode=None):
self.clk_freq = clk_freq
self.rate = rate
self.speedgrade = speedgrade
self.geom_settings = GeomSettings(
bankbits = log2_int(self.nbanks),
rowbits = log2_int(self.nrows),
colbits = log2_int(self.ncols),
)
assert not (self.memtype != "DDR4" and fine_refresh_mode != None)
assert fine_refresh_mode in [None, "1x", "2x", "4x"]
if (fine_refresh_mode is None) and (self.memtype == "DDR4"):
fine_refresh_mode = "1x"
self.timing_settings = TimingSettings(
tRP = self.ck_ns_to_cycles(self.get("tRP")),
tRCD = self.ck_ns_to_cycles(self.get("tRCD")),
tWR = self.ck_ns_to_cycles(self.get("tWR")),
tREFI = self.ck_ns_to_cycles(self.get("tREFI", fine_refresh_mode), margin=False),
tRFC = self.ck_ns_to_cycles(self.get("tRFC", fine_refresh_mode)),
tWTR = self.ck_ns_to_cycles(self.get("tWTR")),
tFAW = None if self.get("tFAW") is None else self.ck_ns_to_cycles(self.get("tFAW")),
tCCD = None if self.get("tCCD") is None else self.ck_ns_to_cycles(self.get("tCCD")),
tRRD = None if self.get("tRRD") is None else self.ck_ns_to_cycles(self.get("tRRD")),
tRC = None if self.get("tRAS") is None else self.ck_ns_to_cycles(self.get("tRP") + self.get("tRAS")),
tRAS = None if self.get("tRAS") is None else self.ck_ns_to_cycles(self.get("tRAS")),
tZQCS = None if self.get("tZQCS") is None else self.ck_ns_to_cycles(self.get("tZQCS"))
)
self.timing_settings.fine_refresh_mode = fine_refresh_mode
def __init__(self, clk_freq, rate, speedgrade=None):
self.clk_freq = clk_freq
self.rate = rate
self.speedgrade = speedgrade
self.geom_settings = GeomSettings(
bankbits=log2_int(self.nbanks),
rowbits=log2_int(self.nrows),
colbits=log2_int(self.ncols),
)
self.timing_settings = TimingSettings(
tRP=self.ns_to_cycles(self.get("tRP")),
tRCD=self.ns_to_cycles(self.get("tRCD")),
tWR=self.ns_to_cycles(self.get("tWR")),
tREFI=self.ns_to_cycles(self.get("tREFI"), False),
tRFC=self.ns_to_cycles(self.get("tRFC")),
tWTR=self.ck_ns_to_cycles(*self.get("tWTR")),
tFAW=None if self.get("tFAW") is None else self.ck_ns_to_cycles(
*self.get("tFAW")),
tCCD=None if self.get("tCCD") is None else self.ck_ns_to_cycles(
*self.get("tCCD")),
tRRD=None if self.get("tRRD") is None else self.ns_to_cycles_trrd(
self.get("tRRD")),
tRC=None if self.get("tRC") is None else self.ns_to_cycles(
self.get("tRC")),
tRAS=None if self.get("tRAS") is None else self.ns_to_cycles(
self.get("tRAS")))
def __init__(self, clk_freq, rate):
self.clk_freq = clk_freq
self.rate = rate
self.geom_settings = GeomSettings(
bankbits=log2_int(self.nbanks),
rowbits=log2_int(self.nrows),
colbits=log2_int(self.ncols),
)
self.timing_settings = TimingSettings(
tRP=self.ns(self.tRP),
tRCD=self.ns(self.tRCD),
tWR=self.ns(self.tWR),
tWTR=self.tWTR,
tREFI=self.ns(self.tREFI, False),
tRFC=self.ns(self.tRFC)
)