def write_measures(self, mode, correct_value):
""" Measure statements for setup/hold with right phases. """
if correct_value == 1:
dout_rise_or_fall = "RISE"
else:
dout_rise_or_fall = "FALL"
# in SETUP mode, the input mirrors what the output should be
if mode == "SETUP":
din_rise_or_fall = dout_rise_or_fall
else:
# in HOLD mode, however, the input should be opposite of the output
if correct_value == 1:
din_rise_or_fall = "FALL"
else:
din_rise_or_fall = "RISE"
self.sf.write("\n* Measure statements for pass/fail verification\n")
trig_name = "clk"
targ_name = "dout"
trig_val = targ_val = 0.5 * self.vdd
# Start triggers right before the clock edge at 2*period
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="clk2q_delay",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="RISE",
targ_dir=dout_rise_or_fall,
trig_td=1.9*self.period,
targ_td=1.9*self.period)
targ_name = "data"
# Start triggers right after initialize value is returned to normal
# at one period
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="setup_hold_time",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="RISE",
targ_dir=din_rise_or_fall,
trig_td=1.2*self.period,
targ_td=1.2*self.period)
def write_measures(self, data_value):
# meas statement for delay and power measurements
self.sf.write("* Measure statements for delay and power\n")
# add measure statments for delay
trig_name = tech.spice["clk"] + "_buf_buf"
targ_name = "{0}".format("DATA[{0}]".format(self.probe_data))
trig_val = targ_val = 0.5 * tech.spice["supply_voltage"]
trig_dir = self.read_cycle
targ_dir = "RISE" if data_value == tech.spice[
"supply_voltage"] else "FALL"
td = self.cycle_times[self.clear_bus_cycle]
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="DELAY",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir=trig_dir,
targ_dir=targ_dir,
td=td)
# add measure statements for power
t_initial = self.cycle_times[self.write_cycle]
t_final = self.cycle_times[self.write_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="POWER_WRITE",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.read_cycle]
t_final = self.cycle_times[self.read_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="POWER_READ",
t_initial=t_initial,
t_final=t_final)
self.sf.write("\n")
def write_measures(self, period):
# meas statement for delay and power measurements
self.sf.write("* Measure statements for delay and power\n")
trig_name = "clk"
targ_name = "{0}".format("D[{0}]".format(self.probe_data))
trig_val = targ_val = 0.5 * self.vdd
# add measure statments for delay0
# delay the target to measure after the negetive edge
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="DELAY0",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="FALL",
targ_dir="FALL",
td=self.cycle_times[self.read0_cycle] +
0.5 * period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="DELAY1",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="FALL",
targ_dir="RISE",
td=self.cycle_times[self.read1_cycle] +
0.5 * period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="SLEW0",
trig_name=targ_name,
targ_name=targ_name,
trig_val=0.9 * self.vdd,
targ_val=0.1 * self.vdd,
trig_dir="FALL",
targ_dir="FALL",
td=self.cycle_times[self.read0_cycle] +
0.5 * period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="SLEW1",
trig_name=targ_name,
targ_name=targ_name,
trig_val=0.1 * self.vdd,
targ_val=0.9 * self.vdd,
trig_dir="RISE",
targ_dir="RISE",
td=self.cycle_times[self.read1_cycle] +
0.5 * period)
# add measure statements for power
t_initial = self.cycle_times[self.write0_cycle]
t_final = self.cycle_times[self.write0_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="WRITE0_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.write1_cycle]
t_final = self.cycle_times[self.write1_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="WRITE1_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.read0_cycle]
t_final = self.cycle_times[self.read0_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="READ0_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.read1_cycle]
t_final = self.cycle_times[self.read1_cycle + 1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="READ1_POWER",
t_initial=t_initial,
t_final=t_final)
def write_measures(self,period):
"""
Write the measure statements to quantify the delay and power results.
"""
self.sf.write("\n* Measure statements for delay and power\n")
# Output some comments to aid where cycles start and
# what is happening
for comment in self.cycle_comments:
self.sf.write("* {}\n".format(comment))
# Trigger on the clk of the appropriate cycle
trig_name = "clk"
targ_name = "{0}".format("d[{0}]".format(self.probe_data))
trig_val = targ_val = 0.5 * self.vdd
# Delay the target to measure after the negative edge
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="DELAY0",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="FALL",
targ_dir="FALL",
trig_td=self.cycle_times[self.read0_cycle],
targ_td=self.cycle_times[self.read0_cycle]+0.5*period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="DELAY1",
trig_name=trig_name,
targ_name=targ_name,
trig_val=trig_val,
targ_val=targ_val,
trig_dir="FALL",
targ_dir="RISE",
trig_td=self.cycle_times[self.read1_cycle],
targ_td=self.cycle_times[self.read1_cycle]+0.5*period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="SLEW0",
trig_name=targ_name,
targ_name=targ_name,
trig_val=0.9*self.vdd,
targ_val=0.1*self.vdd,
trig_dir="FALL",
targ_dir="FALL",
trig_td=self.cycle_times[self.read0_cycle],
targ_td=self.cycle_times[self.read0_cycle]+0.5*period)
stimuli.gen_meas_delay(stim_file=self.sf,
meas_name="SLEW1",
trig_name=targ_name,
targ_name=targ_name,
trig_val=0.1*self.vdd,
targ_val=0.9*self.vdd,
trig_dir="RISE",
targ_dir="RISE",
trig_td=self.cycle_times[self.read1_cycle],
targ_td=self.cycle_times[self.read1_cycle]+0.5*period)
# add measure statements for power
t_initial = self.cycle_times[self.write0_cycle]
t_final = self.cycle_times[self.write0_cycle+1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="WRITE0_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.write1_cycle]
t_final = self.cycle_times[self.write1_cycle+1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="WRITE1_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.read0_cycle]
t_final = self.cycle_times[self.read0_cycle+1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="READ0_POWER",
t_initial=t_initial,
t_final=t_final)
t_initial = self.cycle_times[self.read1_cycle]
t_final = self.cycle_times[self.read1_cycle+1]
stimuli.gen_meas_power(stim_file=self.sf,
meas_name="READ1_POWER",
t_initial=t_initial,
t_final=t_final)
