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器件型号：AFE7950EVM 您好！
为了进行测试、我使用内部 JESD 环回操作 AFE7950EVM。 在测试过程中、我们注意到第一个奈奎斯特区域的性能比第二个奈奎斯特区域差。 下面是设置脚本、我很好奇我是否出错或缺少应该设置的参数。 为便于参考、我将以~0dBm 进入 ADC、并在第一个奈奎斯特区域(位于1000 MHz 和1400 MHz 之间)中获得大约-50dBm 的输出。 在第二奈奎斯特区域中运行时、可获得约-40dBm 的输出(介于1600 MHz 和2000 MHz 之间)。 当前设置是一个信号发生器、该信号发生器连接到 AFE7950EVM 上的端口 RXA_IN、端口 TXA_OUT 连接到频谱分析仪。 感谢所有的帮助！
############## Read me ##############
#In HSDC Pro DAC tab, Select AFE79xx_2x2TX_44210; Data Rate = 491.52M
#In HSDC Pro ADC tab, Select AFE79xx_2x2RX_44210; Data Rate = 491.52M ---> To capture 4 RX channels
sysParams=AFE.systemParams
sysParams.__init__();sysParams.chipVersion=chipVersion
ddcVal = 6
Fadc = 2949.12
dacSpeedUp = 3
ducVal = ddcVal* dacSpeedUp
fNCO1 = 1200
fNCO2 = 1800
firstNyquist = True
if(firstNyquist) : fNCO = fNCO1
else : fNCO = fNCO2
LMFS = "44210"
setupParams.skipFpga = 1 # setup FPGA (TSW14J56) using HSDC Pro
############## Top Level ##############
sysParams.FRef = 491.52
sysParams.FadcRx = Fadc
sysParams.FadcFb = Fadc
sysParams.Fdac = Fadc*dacSpeedUp
sysParams.externalClockRx=False
sysParams.externalClockTx=False
############## Digital Chain ##############
if(firstNyquist) : sysParams.ncoFreqMode = "1KHz" #FCW
else : sysParams.ncoFreqMode = "FCW"
sysParams.RRFMode = 5
##### RX #####
sysParams.numRxNco = 1
sysParams.ddcFactorRx = [ddcVal,ddcVal,ddcVal,ddcVal] #DDC decimation factor for RX A, B, C and D
sysParams.rxNco0 = [[fNCO,fNCO], #Band0, Band1 for RXA
[fNCO,fNCO], #Band0, Band1 for RXB
[fNCO,fNCO], #Band0, Band1 for RXC
[fNCO,fNCO]] #Band0, Band1 for RXD
##### FB #####
sysParams.fbEnable = [True,True]
sysParams.ddcFactorFb = [ddcVal,ddcVal] #DDC decimation factor for FB 1 and 2
sysParams.fbNco0 = [fNCO,fNCO] #Band0 for FB1 and FB2
##### TX #####
sysParams.numTxNco = 1
sysParams.ducFactorTx = [ducVal,ducVal,ducVal,ducVal] #DUC interpolation factor for TX A, B, C and D
sysParams.txNco0 = [[fNCO,fNCO], #Band0, Band1 for TXA
[fNCO,fNCO], #Band0, Band1 for TXB
[fNCO,fNCO], #Band0, Band1 for TXC
[fNCO,fNCO]] #Band0, Band1 for TXD
sysParams.enableDacInterleavedMode = False
############## JESD ##############
##### ADC-JESD #####
sysParams.jesdSystemMode= [3,3]
#SystemMode 0: 2R1F-FDD ; rx1-rx2-fb -fb
#SystemMode 1: 1R1F-FDD ; rx -rx -fb -fb
#SystemMode 2: 2R-FDD ; rx1-rx1-rx2-rx2
#SystemMode 3: 1R ; rx -rx -rx -rx
#SystemMode 4: 1F ; fb -fb- fb -fb
#SystemMode 5: 1R1F-TDD ; rx/fb-rx/fb-rx/fb-rx/fb
sysParams.jesdTxProtocol= [2,2] # 0 - 8b/10b encoding; 2 - 64b/66b encoding
sysParams.LMFSHdRx = [LMFS,LMFS,LMFS,LMFS]
# The 2nd and 4th are valid only for jesdSystemMode values in (0,2).
# For other modes, select 4 converter modes for 1st and 3rd.
sysParams.LMFSHdFb = ["22210","22210"]
sysParams.rxJesdTxScr = [False,False,False,False]
sysParams.fbJesdTxScr = [False,False]
sysParams.rxJesdTxK = [1,1,1,1]
sysParams.fbJesdTxK = [1,1]
sysParams.jesdTxLaneMux = [0,1,2,3,4,5,6,7] # Enter which lanes you want in each location.
# For example, if you want to exchange the first two lines of each 2T,
# this should be [[1,0,2,3],[5,4,6,7]]
##### DAC-JESD #####
sysParams.jesdRxProtocol= [2,2]
sysParams.LMFSHdTx = [LMFS,LMFS,LMFS,LMFS]
sysParams.jesdRxLaneMux = [0,1,2,3,4,5,6,7] # Enter which lanes you want in each location.
# For example, if you want to exchange the first two lines of each 2R
# this should be [[1,0,2,3],[5,4,6,7]]
sysParams.jesdRxRbd = [28,28]
sysParams.jesdRxScr = [False,False,False,False]
sysParams.jesdRxK = [1,1,1,1]
###sysParams.enableDacInterleavedMode = True
##### JESD Common #####
sysParams.jesdABLvdsSync= True
sysParams.jesdCDLvdsSync= False
sysParams.serdesFirmware = True
sysParams.jesdLoopbackEn = True
############## GPIO ##############
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']}
############## LMK Params ##############
lmkParams.pllEn = True
lmkParams.inputClk = 983.04 # Valid only when lmkParams.pllEn = False
lmkParams.lmkFrefClk = True
setupParams.fpgaRefClk = 184.32 # Should be equal to LaneRate/40 for TSW14J56
############## Logging ##############
logDumpInst.setFileName(ASTERIX_DIR+DEVICES_DIR+r"\Afe79xxPg1.txt")
logDumpInst.logFormat=0x0 #Modify to 0x1 to save register scequence to log file. Script takes more time to execute.
logDumpInst.rewriteFile=1
logDumpInst.rewriteFileFormat4=1
device.optimizeWrites=0
device.rawWriteLogEn=1
device.delay_time = 0
#-------------------------------------------------------------------------------------------------#
AFE.deviceBringup()
AFE.TOP.overrideTdd(15,3,15) # bit-wise; 4R,2F,4T
