def bench():
""" Unit test for trigger_digital. """
clock = Signal(bool(False))
reset = Signal(bool(False))
trigger = Signal(bool(False))
dataIn = Signal(intbv(0)[16:])
pattern = Signal(intbv(0)[64:])
samples = Signal(intbv(0, min = 0, max = 4))
dut_trigger_digital = trigger_digital(clock, reset, dataIn, pattern, samples, trigger)
@always(delay(PERIOD//2))
def clkgen():
clock.next = not clock
@instance
def stimulus():
reset.next = True
pattern.next[16:] = 0x53D3
samples.next = 0
yield delay(12)
reset.next = False
for i in range(0, 64000):
yield clock.negedge
dataIn.next = i
pattern.next[32:] = 0x53D253D3
samples.next = 1
reset.next = True
yield delay(12)
reset.next = False
for i in range(0, 64000):
yield clock.negedge
dataIn.next = i
pattern.next[48:] = 0x53D153D253D3
samples.next = 2
reset.next = True
yield delay(12)
reset.next = False
for i in range(0, 64000):
yield clock.negedge
dataIn.next = i
pattern.next[64:] = 0x53D053D153D253D3
samples.next = 2
reset.next = True
yield delay(12)
reset.next = False
for i in range(0, 64000):
yield clock.negedge
dataIn.next = i
raise StopSimulation
return dut_trigger_digital, clkgen, stimulus
def bench():
""" Integration test for controller. """
clock = Signal(bool(False))
clockFtdi = Signal(bool(False))
reset = Signal(bool(False))
ft245din = Signal(intbv(0)[8:])
ft245dout = Signal(intbv(0)[8:])
ft245rw = Signal(bool(False))
ft245clock = Signal(bool(False))
ft245reset = Signal(bool(False))
ft245busy = Signal(bool(False))
ft245oe = Signal(bool(False))
ft245dataWaitIn = Signal(bool(False))
ft245dataWaitOut = Signal(bool(False))
ft245strobe = Signal(bool(False))
dacReset = Signal(bool(False))
dacBusy = Signal(bool(False))
dacStrobe = Signal(bool(False))
dacVrefTopA = Signal(intbv(0)[8:])
dacVrefTopB = Signal(intbv(0)[8:])
dacVrefBotA = Signal(intbv(0)[8:])
dacVrefBotB = Signal(intbv(0)[8:])
digipotValue = Signal(intbv(0)[7:])
digipotReset = Signal(bool(False))
digipotBusy = Signal(bool(False))
digipotStrobe = Signal(bool(False))
bufferclock = Signal(bool(False))
bufferReset = Signal(bool(False))
bufferDataIn = Signal(intbv(0)[16:])
bufferDataOut = Signal(intbv(0)[16:])
bufferReady = Signal(bool(False))
bufferOutputInputReady = Signal(bool(False))
bufferAllowWriteOverlap = Signal(bool(False))
bufferUseSdram = Signal(bool(False))
bufferDataDirection = Signal(bool(False))
decimatorclockOut = Signal(bool(False))
decimationRatioBase = Signal(intbv(0, min = 0, max = 11))
decimationStyle = Signal(intbv(0)[2:])
analogTrigger1Reset = Signal(bool(False))
trigger1Type = Signal(bool(False))
trigger1Slope = Signal(bool(False))
analog1Trigger = Signal(bool(False))
trigger1Value = Signal(intbv(0)[8:])
analogTrigger2Reset = Signal(bool(False))
trigger2Type = Signal(bool(False))
trigger2Slope = Signal(bool(False))
analog2Trigger = Signal(bool(False))
trigger2Value = Signal(intbv(0)[8:])
digitalTriggerReset = Signal(bool(False))
digiTrigger = Signal(bool(False))
triggerPattern = Signal(intbv(0)[64:])
triggerSamples = Signal(intbv(0, min = 0, max = 4))
decimator1out = Signal(intbv(0)[8:])
decimator2out = Signal(intbv(0)[8:])
decimator1in = Signal(intbv(0)[8:])
decimator2in = Signal(intbv(0)[8:])
adc1pd = Signal(bool(False))
adc2pd = Signal(bool(False))
adc1relatt = Signal(bool(False))
adc2relatt = Signal(bool(False))
adc1relco = Signal(bool(False))
adc2relco = Signal(bool(False))
led0 = Signal(bool(False))
led1 = Signal(bool(False))
logicAnalyzer = Signal(intbv(0)[16:])
la1dir = Signal(bool(False))
la2dir = Signal(bool(False))
la1oe = Signal(bool(False))
la2oe = Signal(bool(False))
decimator1clockOut = Signal(bool(False))
decimator2clockOut = Signal(bool(False))
serialOut = Signal(bool(False))
load = Signal(bool(False))
ldac = Signal(bool(False))
clkDacOut = Signal(bool(False))
sda = TristateSignal(bool(False))
scl = TristateSignal(bool(False))
sda_d = sda.driver()
scl_d = scl.driver()
sda_dpull = sda.driver()
scl_dpull = scl.driver()
rxf = Signal(bool(False))
txe = Signal(bool(False))
rd = Signal(bool(False))
wr = Signal(bool(False))
siwu = Signal(bool(False))
adbus = TristateSignal(intbv(0)[8:])
lfsr = Signal(intbv(0)[LFSR_WIDTH:])
adbus_drv = adbus.driver()
data = [Signal(intbv(0)[8:]) for i in range(9)]
dut_controller = controller(clockFtdi, reset, ft245din, ft245dout, ft245clock, ft245rw, ft245busy, ft245oe,
ft245dataWaitIn, ft245dataWaitOut, ft245strobe, ft245reset, dacReset,
dacVrefTopA, dacVrefTopB, dacVrefBotA, dacVrefBotB, dacStrobe, dacBusy,
digipotReset, digipotValue, digipotStrobe, digipotBusy, bufferReset,
bufferDataOut, bufferDataIn, bufferReady, bufferOutputInputReady, bufferclock,
bufferAllowWriteOverlap, bufferUseSdram, bufferDataDirection, decimator1clockOut,
decimationRatioBase, decimationStyle, decimator1out, decimator2out,
trigger1Type, trigger1Slope, analogTrigger1Reset, trigger1Value,
analog1Trigger, trigger2Type, trigger2Slope, analogTrigger2Reset,
trigger2Value, analog2Trigger, digitalTriggerReset, triggerPattern,
triggerSamples, digiTrigger, adc1pd, adc2pd, adc1relatt, adc2relatt,
adc1relco, adc2relco, led0, led1, logicAnalyzer, la1dir, la2dir, la1oe, la2oe)
inst_decimator1 = decimator(clock, reset, decimator1in, decimator1out, decimationRatioBase, decimationStyle, decimator1clockOut)
inst_decimator2 = decimator(clock, reset, decimator2in, decimator2out, decimationRatioBase, decimationStyle, decimator2clockOut)
inst_trigger_analog1 = trigger_analog(decimator1clockOut, analogTrigger1Reset, decimator1out,
trigger1Type, trigger1Slope, trigger1Value, analog1Trigger)
inst_trigger_analog2 = trigger_analog(decimator2clockOut, analogTrigger2Reset, decimator2out,
trigger2Type, trigger2Slope, trigger2Value, analog2Trigger)
inst_trigger_digital = trigger_digital(clock, digitalTriggerReset, logicAnalyzer, triggerPattern, triggerSamples, digiTrigger)
inst_dac_controller = dac_controller(clock, dacReset, dacVrefTopA, dacVrefTopB, dacVrefBotA, dacVrefBotB, dacStrobe,
serialOut, load, ldac, clkDacOut, dacBusy)
inst_digipot_controller = digipot_controller(clock, digipotReset, digipotValue, digipotStrobe, digipotBusy, sda, scl)
inst_ft245sync = ft245sync(clockFtdi, ft245reset, rxf, txe, rd, wr, ft245oe, siwu, adbus, ft245din, ft245dout,
ft245rw, ft245busy, ft245dataWaitIn, ft245dataWaitOut, ft245strobe)
inst_buffer = buff(bufferclock, bufferReset, bufferDataIn, bufferDataOut, bufferReady, bufferOutputInputReady,
bufferAllowWriteOverlap, bufferUseSdram, bufferDataDirection)
@instance
def clkgen():
clock.next = not clock
yield delay(HALF_PERIOD)
@instance
def clkgen_f():
clockFtdi.next = not clockFtdi
yield delay(HALF_PERIOD_FTDI)
@always(clock.posedge, reset.posedge)
def lfsr_proc():
if(reset == 1):
lfsr.next = LFSR_SEED
else:
lfsr.next = concat(lfsr[LFSR_WIDTH-1:0], lfsr[9] ^ lfsr[6])
@always_comb
def adcGen():
if(reset == 1):
decimator1in.next = 0
decimator2in.next = 0
else:
if(adc1pd):
decimator1in.next = 0
else:
decimator1in.next = lfsr[10:2]
if(adc2pd):
decimator2in.next = 0
else:
decimator2in.next = lfsr[8:]
@instance
def stimulus():
i = int(0)
reset.next = True
adbus_drv.next = None
rxf.next = True
txe.next = True
sda_d.next = None
scl_d.next = None
sda_dpull.next = None
scl_dpull.next = None
yield delay(32)
reset.next = False
#set VREF
yield ft245busy.negedge
print ("FT245 ready")
rxf.next = False
print ("FT245 RXF low")
yield clockFtdi.posedge
yield (ft245oe.negedge)
print ("OE came low, pushing data from FTDI")
adbus_drv.next = 0x10
i = 0
data[0].next = 100
data[1].next = 80
data[2].next = 150
data[3].next = 40
data[4].next = 0
data[5].next = 0
data[6].next = 0
data[7].next = 0
data[8].next = 0
while(rxf == 0):
yield clockFtdi.negedge
adbus_drv.next = data[i]
if(i == 8):
break
i = i + 1
yield clockFtdi.posedge
yield clockFtdi.negedge
adbus_drv.next = None
rxf.next = True
if(ft245busy != 0):
print ("Error: Busy should be low")
yield ft245busy.negedge
#SET decimation
print ("FT245 ready")
rxf.next = False
print ("FT245 RXF low")
yield clockFtdi.posedge
yield (ft245oe.negedge)
print ("OE came low, pushing data from FTDI")
adbus_drv.next = 0x30
i = 0
data[0].next = 0x00
data[1].next = 0x00
data[2].next = 0
data[3].next = 0
data[4].next = 0
data[5].next = 0
data[6].next = 0
data[7].next = 0
data[8].next = 0
while(rxf == 0):
yield clockFtdi.negedge
adbus_drv.next = data[i]
if(i == 8):
break
i = i + 1
yield clockFtdi.posedge
yield clockFtdi.negedge
adbus_drv.next = None
rxf.next = True
if(ft245busy != 0):
print ("Error: Busy should be low")
yield ft245busy.negedge
#SET attenuators
print ("FT245 ready")
rxf.next = False
print ("FT245 RXF low")
yield clockFtdi.posedge
yield (ft245oe.negedge)
print ("OE came low, pushing data from FTDI")
adbus_drv.next = 0x20
i = 0
data[0].next = 0xFF
data[1].next = 0xFF
data[2].next = 0
data[3].next = 0
data[4].next = 0
data[5].next = 0
data[6].next = 0
data[7].next = 0
data[8].next = 0
while(rxf == 0):
yield clockFtdi.negedge
adbus_drv.next = data[i]
if(i == 8):
break
i = i + 1
yield clockFtdi.posedge
yield clockFtdi.negedge
adbus_drv.next = None
rxf.next = True
if(ft245busy != 0):
print ("Error: Busy should be low")
yield ft245busy.negedge
#SET trigger
print ("FT245 ready")
rxf.next = False
print ("FT245 RXF low")
yield clockFtdi.posedge
yield (ft245oe.negedge)
print ("OE came low, pushing data from FTDI")
adbus_drv.next = 0x31
i = 0
data[0].next = 120
data[1].next = 0
data[2].next = 145
data[3].next = 0
data[4].next = 0
data[5].next = 0
data[6].next = 0
data[7].next = 0
data[8].next = 0
while(rxf == 0):
yield clockFtdi.negedge
adbus_drv.next = data[i]
if(i == 8):
break
i = i + 1
yield clockFtdi.posedge
yield clockFtdi.negedge
rxf.next = True
adbus_drv.next = None
if(ft245busy != 0):
print ("Error: Busy should be low")
yield ft245busy.negedge
#Start capture
print ("FT245 ready")
rxf.next = False
print ("FT245 RXF low")
yield clockFtdi.posedge
yield (ft245oe.negedge)
print ("OE came low, pushing data from FTDI")
adbus_drv.next = 0x40
i = 0
data[0].next = 0xF0
data[1].next = 0
data[2].next = 0
data[3].next = 0
data[4].next = 0
data[5].next = 0
data[6].next = 0
data[7].next = 0
data[8].next = 0
while(rxf == 0):
yield clockFtdi.negedge
adbus_drv.next = data[i]
if(i == 8):
break
i = i + 1
yield clockFtdi.posedge
yield clockFtdi.negedge
rxf.next = True
adbus_drv.next = None
if(ft245busy != 0):
print ("Error: Busy should be low")
yield ft245busy.negedge
yield bufferDataDirection.negedge
yield ft245busy.posedge
txe.next = False
yield clockFtdi.posedge
for i in range(0, 100000):
if(ft245dataWaitOut):
print("Data wait out")
print("Data:")
print(adbus)
yield clockFtdi.posedge
if(bufferReady == 0):
break
raise StopSimulation
return inst_buffer, inst_ft245sync, inst_digipot_controller, inst_dac_controller, inst_trigger_digital, lfsr_proc, adcGen, \
inst_trigger_analog2, inst_trigger_analog1, inst_decimator2, inst_decimator1, dut_controller, clkgen, clkgen_f, stimulus
def top(reset, clock, clockFtdi, adc1data, adc2data, adc1pd, adc2pd, adc1relatt, adc2relatt,
adc1relco, adc2relco, led0, led1, logicAnalyzer, la1dir, la2dir, la1oe, la2oe,
serialOut, load, ldac, clkDacOut, sda, scl, rxf, oe, txe, rd, wr, siwu, adbus):
decimatorNewValueFlag = Signal(bool(False))
ft245din = Signal(intbv(0)[8:])
ft245din.driven = 'reg'
ft245dout = Signal(intbv(0)[8:])
ft245dout.driven = 'reg'
ft245rw = Signal(bool(False))
ft245rw.driven = 'reg'
ft245reset = Signal(bool(False))
ft245reset.driven = 'wire'
ft245busy = Signal(bool(False))
ft245busy.driven = 'wire'
ft245dataWaitIn = Signal(bool(False))
ft245dataWaitIn.driven = 'wire'
ft245dataWaitOut = Signal(bool(False))
ft245dataWaitOut.driven = 'wire'
ft245strobe = Signal(bool(False))
ft245strobe.driven = 'wire'
dacReset = Signal(bool(False))
dacReset.driven = 'wire'
dacBusy = Signal(bool(False))
dacBusy.driven = 'wire'
dacStrobe = Signal(bool(False))
dacStrobe.driven = 'wire'
dacVrefTopA = Signal(intbv(0)[8:])
dacVrefTopA.driven = 'reg'
dacVrefTopB = Signal(intbv(0)[8:])
dacVrefTopB.driven = 'reg'
dacVrefBotA = Signal(intbv(0)[8:])
dacVrefBotA.driven = 'reg'
dacVrefBotB = Signal(intbv(0)[8:])
dacVrefBotB.driven = 'reg'
digipotValue = Signal(intbv(0)[7:])
digipotValue.driven = 'reg'
digipotReset = Signal(bool(False))
digipotReset.driven = 'wire'
digipotBusy = Signal(bool(False))
digipotBusy.driven = 'wire'
digipotStrobe = Signal(bool(False))
digipotStrobe.driven = 'wire'
bufferclock = Signal(bool(False))
bufferclock.driven = 'wire'
bufferReset = Signal(bool(False))
bufferReset.driven = 'wire'
bufferDataIn = Signal(intbv(0)[32:])
bufferDataIn.driven = 'reg'
bufferDataOut = Signal(intbv(0)[32:])
bufferDataOut.driven = 'reg'
bufferReady = Signal(bool(False))
bufferReady.driven = 'wire'
bufferOutputInputReady = Signal(bool(False))
bufferOutputInputReady.driven = 'wire'
bufferAllowWriteOverlap = Signal(bool(False))
bufferAllowWriteOverlap.driven = 'wire'
bufferUseSdram = Signal(bool(False))
bufferUseSdram.driven = 'wire'
bufferDataDirection = Signal(bool(False))
bufferDataDirection.driven = 'wire'
decimationRatioBase = Signal(intbv(0, min = 0, max = 9))
decimationRatioBase.driven = 'reg'
decimationRatio = Signal(intbv(0, min = 0, max = MAXIMAL_RATIO+1))
decimationStyle = Signal(intbv(0)[2:])
decimationStyle.driven = 'reg'
analogTrigger1Reset = Signal(bool(False))
analogTrigger1Reset.driven = 'wire'
trigger1Type = Signal(bool(False))
trigger1Type.driven = 'wire'
trigger1Slope = Signal(bool(False))
trigger1Slope.driven = 'wire'
analog1Trigger = Signal(bool(False))
analog1Trigger.driven = 'wire'
trigger1Value = Signal(intbv(0)[8:])
trigger1Value.driven = 'reg'
analogTrigger2Reset = Signal(bool(False))
analogTrigger2Reset.driven = 'wire'
trigger2Type = Signal(bool(False))
trigger2Type.driven = 'wire'
trigger2Slope = Signal(bool(False))
trigger2Slope.driven = 'wire'
analog2Trigger = Signal(bool(False))
analog2Trigger.driven = 'wire'
trigger2Value = Signal(intbv(0)[8:])
trigger2Value.driven = 'reg'
digitalTriggerReset = Signal(bool(False))
digitalTriggerReset.driven = 'wire'
digiTrigger = Signal(bool(False))
digiTrigger.driven = 'wire'
triggerPattern = Signal(intbv(0)[64:])
triggerPattern.driven = 'reg'
triggerSamples = Signal(intbv(0, min = 0, max = 4))
triggerSamples.driven = 'reg'
decimator1out = Signal(intbv(0)[8:])
decimator1out.driven = 'reg'
decimator2out = Signal(intbv(0)[8:])
decimator2out.driven = 'reg'
decimatorclock = Signal(bool(False))
#decimatorclock.driven = 'wire'
decimator1in = Signal(intbv(0)[8:])
decimator2in = Signal(intbv(0)[8:])
oe_i = Signal(bool(False))
rxf_i = Signal(bool(False))
txe_i = Signal(bool(False))
rd_i = Signal(bool(False))
wr_i = Signal(bool(False))
siwu_i = Signal(bool(False))
serialOut_i = Signal(bool(False))
load_i = Signal(bool(False))
ldac_i = Signal(bool(False))
clkDacOut_i = Signal(bool(False))
adc1pd_i = Signal(bool(False))
adc2pd_i = Signal(bool(False))
adc1relatt_i = Signal(bool(False))
adc2relatt_i = Signal(bool(False))
adc1relco_i = Signal(bool(False))
adc2relco_i = Signal(bool(False))
led0_i = Signal(bool(False))
led1_i = Signal(bool(False))
logicAnalyzer_i = Signal(intbv(0)[16:])
logicAnalyzer_dec = Signal(intbv(0)[16:])
la1dir_i = Signal(bool(False))
la2dir_i = Signal(bool(False))
la1oe_i = Signal(bool(False))
la2oe_i = Signal(bool(False))
clock_i = Signal(bool(False))
clockFtdi_i = Signal(bool(False))
reset_i = Signal(bool(False))
alwaysEn = Signal(bool(False))
@always_comb
def connectSignals():
decimator1in.next = adc1data
decimator2in.next = adc2data
oe.next = oe_i
rxf_i.next = rxf
txe_i.next = txe
rd.next = rd_i
wr.next = wr_i
siwu.next = siwu_i
serialOut.next = serialOut_i
load.next = load_i
ldac.next = ldac_i
clkDacOut.next = clkDacOut_i
adc1pd.next = adc1pd_i
adc2pd.next = adc2pd_i
adc1relatt.next = adc1relatt_i
adc2relatt.next = adc2relatt_i
adc1relco.next = adc1relco_i
adc2relco.next = adc2relco_i
led0.next = led0_i
led1.next = led1_i
logicAnalyzer_i.next = logicAnalyzer
la1dir.next = la1dir_i
la2dir.next = la2dir_i
la1oe.next = la1oe_i
la2oe.next = la2oe_i
clock_i.next = clock
clockFtdi_i.next = clockFtdi
reset_i.next = reset
controller.vhdl_instance = "controller"
inst_controller = controller(clockFtdi_i, reset_i, ft245din, ft245dout, ft245rw, ft245busy, oe_i, wr_i,
ft245dataWaitIn, ft245dataWaitOut, ft245strobe, ft245reset, dacReset,
dacVrefTopA, dacVrefTopB, dacVrefBotA, dacVrefBotB, dacStrobe, dacBusy,
digipotReset, digipotValue, digipotStrobe, digipotBusy, bufferReset,
bufferDataOut, bufferDataIn, bufferReady, bufferOutputInputReady,
bufferAllowWriteOverlap, bufferDataDirection, decimatorNewValueFlag,
decimationRatioBase, decimationStyle, decimator1out, decimator2out,
trigger1Type, trigger1Slope, analogTrigger1Reset, trigger1Value,
analog1Trigger, trigger2Type, trigger2Slope, analogTrigger2Reset,
trigger2Value, analog2Trigger, digitalTriggerReset, triggerPattern,
triggerSamples, digiTrigger, adc1pd_i, adc2pd_i, adc1relatt_i, adc2relatt_i,
adc1relco_i, adc2relco_i, led0_i, led1_i, logicAnalyzer_dec, la1dir_i, la2dir_i, la1oe_i, la2oe_i, clock_i)
decimator_clock_divisor.vhdl_instance = "decimator_clock_divisor"
inst_decimator_clock_divisor = decimator_clock_divisor(clock_i, reset_i, decimationRatioBase, decimationRatio, decimatorclock, decimatorNewValueFlag, alwaysEn)
digital_decimator.vhdl_instance = "digital_decimator"
inst_digital_decimator = digital_decimator(clock_i, reset_i, logicAnalyzer_i, logicAnalyzer_dec, decimationRatio, decimatorclock)
decimator.vhdl_instance = "decimator"
inst_decimator1 = decimator(clock_i, reset_i, decimator1in, decimator1out, decimationRatio, decimationRatioBase, decimationStyle, decimatorclock, decimatorNewValueFlag)
inst_decimator2 = decimator(clock_i, reset_i, decimator2in, decimator2out, decimationRatio, decimationRatioBase, decimationStyle, decimatorclock, decimatorNewValueFlag)
trigger_analog.vhdl_instance = "trigger_analog"
inst_trigger_analog1 = trigger_analog(clock_i, analogTrigger1Reset, decimator1out,
trigger1Type, trigger1Slope, trigger1Value, analog1Trigger, decimatorclock, alwaysEn)
inst_trigger_analog2 = trigger_analog(clock_i, analogTrigger2Reset, decimator2out,
trigger2Type, trigger2Slope, trigger2Value, analog2Trigger, decimatorclock, alwaysEn)
trigger_digital.vhdl_instance = "trigger_digital"
inst_trigger_digital = trigger_digital(decimatorclock, digitalTriggerReset, logicAnalyzer_dec, triggerPattern, triggerSamples, digiTrigger, decimatorclock, alwaysEn)
dac_controller.vhdl_instance = "dac_controller"
inst_dac_controller = dac_controller(clockFtdi_i, dacReset, dacVrefTopA, dacVrefTopB, dacVrefBotA, dacVrefBotB, dacStrobe,
serialOut_i, load_i, ldac_i, clkDacOut_i, dacBusy)
digipot_controller.vhdl_instance = "digipot_controller"
inst_digipot_controller = digipot_controller(clockFtdi_i, digipotReset, digipotValue, digipotStrobe, digipotBusy, sda, scl)
buff.vhdl_instance = "buff"
inst_buffer = buff(clock_i, bufferReset, bufferDataIn, bufferDataOut, bufferReady, bufferOutputInputReady,
bufferAllowWriteOverlap, bufferDataDirection, decimatorclock, clockFtdi, alwaysEn)
ft245sync.vhdl_instance = "ft245sync"
inst_ft245sync = ft245sync(clockFtdi_i, ft245reset, rxf_i, txe_i, rd_i, wr_i, oe_i, siwu_i, adbus, ft245din, ft245dout,
ft245rw, ft245busy, ft245dataWaitIn, ft245dataWaitOut, ft245strobe)
return connectSignals, inst_decimator1, inst_decimator2, inst_controller, inst_trigger_analog1, inst_trigger_analog2, \
inst_buffer, inst_ft245sync, inst_digipot_controller, inst_dac_controller, inst_trigger_digital, \
inst_digital_decimator, inst_decimator_clock_divisor
