Other Parts Discussed in Thread: AFE7920, AFE7950, AFE7900
Hi Team,
I've recently encountered a strange error when trying to run my Latte script (see below).
I am running the repeater configuration with pll in distribution mode.
I am providing external clock reference of f0=163.68 MHz to the AFE7920EVM board, the ADC sampling rate is 1964.16 MHz (12 x f0) with down-conversion factor Nddc =6 (data rate of 327.36 MHz (or Mb/s)). The DAC sampling rate is 11784.96 MHz (72 x f0) with up-conversion factor Nduc=36 (Fdac = 6xFadc). I am targeting a system where the line rate is equal to the 6547.2 Mb/s (very strict restriction imposed by the FPGA board I am using, based on Xilinx Kintex 7 series). When I run the attached script, I get the following error:
which revolves around a number 8847.36.
Could you perhaps provide some insights on this error, and if my desired mode of operation can be supported by the AFE7920EVM?
Kind regards,
Zeljko
########## General settings: ##########
# VLBI Tx frequency plan details:
custom_clk = 2
ncoFreqModes = ["1KHz", "FCW"]
Fnco_tx1 = 2245.0
Fnco_rx1 = 500.0
f0 = 163.68
Nrx = 12
Nddc = 6
Ntx = 6
NFRef = 1
NfpgaRefClk = 1
NinputClk = 1
LMFSHdRx = ['44210', '44210', '44210', '44210']
LMFSHdFb = ['22210', '22210']
LMFSHdTx = ['44210', '44210', '44210', '44210']
syncLoopBack = 1
Nduc = Nddc*Ntx
# AFE general settings
AFE.systemStatus.loadTrims = 1
setupParams.skipFpga = 1
setupParams.fpgaRefClk = f0*NfpgaRefClk
sysParams = AFE.systemParams
sysParams.FRef = f0*NFRef
########## Analog settings: AFE 79XX EVM ##########
# General system settings
sysParams.RRFMode = 0
sysParams.modeTdd = 0
sysParams.adcSelect0 = [0, 1, 2]
sysParams.adcSelect1 = [0, 1, 2]
sysParams.useSpiSysref = 0
sysParams.sysrefTermination = 0
sysParams.ncoFreqMode = ncoFreqModes[custom_clk != 0]
sysParams.spiMode = 1
# ADC settings
sysParams.FadcRx = f0*Nrx
sysParams.rxEnable = [1, 1, 1, 1]
sysParams.externalClockRx = 0
sysParams.halfRateModeRx = [0, 0]
sysParams.ddcFactorRx = [Nddc, Nddc, Nddc, Nddc]
sysParams.numBandsRx = [0, 0, 0, 0]
sysParams.numRxNCO = 1
sysParams.ncoRxMode = [0, 0]
sysParams.broadcastRxNcoSel = 0
sysParams.rxNco0 = [ [Fnco_rx1, Fnco_rx1],
[870.0, 870.0],
[637.5, 637.5],
[637.5, 637.5]]
sysParams.rxNco1 = [ [Fnco_rx1, Fnco_rx1],
[870.0, 870.0],
[637.5, 637.5],
[637.5, 637.5]]
# FB settings
sysParams.FadcFb = sysParams.FadcRx
sysParams.fbEnable = [0, 0]
sysParams.halfRateModeFb = [0, 0]
sysParams.ddcFactorFb = [Nddc, Nddc]
sysParams.numBandsFb = [0, 0]
sysParams.numFbNCO = 1
sysParams.ncoFbMode = 0
sysParams.fbNco0 = [1000, 1000]
sysParams.fbNco1 = [1000, 1000]
sysParams.fbNco2 = [1000, 1000]
sysParams.fbNco3 = [1000, 1000]
# DAC settings
sysParams.Fdac = sysParams.FadcRx*Ntx
sysParams.txEnable = [1, 1, 1, 1]
sysParams.externalClockTx = 0
sysParams.halfRateModeTx = [0, 0]
sysParams.ducFactorTx = [Nduc, Nduc, Nduc, Nduc]
sysParams.numBandsTx = [0, 0, 0, 0]
sysParams.numTxNCO = 1
sysParams.combineDucMode = [0, 0]
sysParams.enableDacInterleavedMode = 0
sysParams.ncoTxMode = [0, 0]
sysParams.broadcastTxNcoSel = 0
sysParams.txNco0 = [ [Fnco_tx1, Fnco_tx1],
[5020.0, 5020.0],
[8212.5, 8212.5],
[6812.5, 6812.5]]
sysParams.txNco1 = [ [Fnco_tx1, Fnco_tx1],
[5020.0, 5020.0],
[8212.5, 8212.5],
[6812.5, 6812.5]]
########## Clock distribution mode setting ##########
lmkParams.pllEn = (custom_clk == 0)
lmkParams.inputClk = f0*NinputClk
lmkParams.sysrefFreq = f0*Nrx/1024
lmkParams.lmkFrefClk = 1
########## JESD204 settings AFE 79XX EVM ##########
sysParams.topLevelSystemMode = 'StaticTDDMode'
sysParams.jesdSystemMode = [3, 3]
sysParams.serdesFirmware = 1
#sysParams.jesdABLvdsSync = 1
#sysParams.jesdCDLvdsSync = 1
#sysParams.syncLoopBack = syncLoopBack
sysParams.jesdLoopbackEn = 1
#sysParams.setIlaParams = 0
#sysParams.jesdTxIlaM = [8, 8, 2, 8, 8, 2]
#sysParams.jesdTxIlaLid = [0, 1, 2, 3, 4, 5, 6, 7]
#sysParams.jesdTxIlaL = [4, 4, 2, 4, 4, 2]
sysParams.LMFSHdRx = LMFSHdRx
sysParams.jesdRxProtocol = [0, 0]
sysParams.jesdRxLaneMux = [0, 1, 2, 3, 4, 5, 6, 7]
sysParams.jesdRxRbd = [4, 4]
sysParams.rxJesdTxScr = [1, 1, 1, 1]
sysParams.rxJesdTxK = [16, 16, 16, 16]
#sysParams.rxJesdTxSyncMux = [0, 0, 0, 0]
#sysParams.rxDataMux = [0, 1, 2, 3, 4, 5, 6, 7]
#sysParams.serdesRxLanePolarity = [0, 0, 0, 0, 0, 0, 0, 0]
#sysParams.adcDataMuxEn = 0
sysParams.LMFSHdFb = LMFSHdFb
sysParams.fbJesdTxScr = [1, 1]
sysParams.fbJesdTxK = [16, 16]
#sysParams.fbJesdTxSyncMux = [0, 0]
#sysParams.fbDataMux = [0, 1]
sysParams.LMFSHdTx = LMFSHdTx
sysParams.jesdTxProtocol = [0, 0]
sysParams.jesdTxLaneMux = [0, 1, 2, 3, 4, 5, 6, 7]
#sysParams.jesdTxRbd = [4, 4]
sysParams.jesdRxScr = [1, 1, 1, 1]
sysParams.jesdRxK = [16, 16, 16, 16]
#sysParams.jesdRxSyncMux = [0, 0, 0, 0]
#sysParams.txDataMux = [0, 1, 2, 3, 4, 5, 6, 7]
#sysParams.serdesTxLanePolarity = [0, 0, 0, 0, 0, 0, 0, 0]
#sysParams.dacDataMuxEn = 0
#sysParams.serdesTxPreCursor = [6, 6, 6, 6, 6, 6, 6, 6]
#sysParams.serdesTxPostCursor = [0, 0, 0, 0, 0, 0, 0, 0]
#sysParams.serdesTxMainCursor = [3, 0, 0, 0, 0, 0, 0, 3]
########## Dummy txt ##########
sysParams.gpioMapping={ 'H8': 'ADC_SYNC0',
'H7': 'ADC_SYNC1',
'N8': 'ADC_SYNC2',
'N7': 'ADC_SYNC3',
'H9': 'DAC_SYNC0',
'G9': 'DAC_SYNC1',
'N9': 'DAC_SYNC2',
'P9': 'DAC_SYNC3',
'P14': 'GLOBAL_PDN',
'K14': 'FBABTDD',
'R6': 'FBCDTDD',
'H15': ['TXATDD','TXBTDD'],
'V5': ['TXCTDD','TXDTDD'],
'E7': ['RXATDD','RXBTDD'],
'R15': ['RXCTDD','RXDTDD']}
logDumpInst.setFileName(ASTERIX_DIR+DEVICES_DIR+r"\Afe79xxPg1.txt")
logDumpInst.logFormat = 0x01
logDumpInst.rewriteFile = 1
logDumpInst.rewriteFileFormat4 = 1
device.optimizeWrites = 0
device.rawWriteLogEn = 1
device.delay_time = 0
AFE.deviceBringup()
AFE.TOP.overrideTdd(15,3,15)
