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器件型号：AFE7950 主题中讨论的其他器件： LMX2820、 TIDA-010230、 LMK04828、 AFE7906
尊敬的 TI：
我使用 LMX2820制作了 ADC 板、为 AFE7950提供低相位噪声采样 CLK
简化原理图如下所示
参考设计为 AFE7950EVM 和 TIDA-010230 (多通道射频收发器、低噪声时钟参考设计)
VCXO 输出到 LMX2820 OSCIN 和 LMK04828 OSCIN、它与 AFE7950EVM 不同
请建议如何修改此电路设计的 Latte 脚本( 例如，请采用 AFE7906Rx_250m)
P.s.1 LMX2820可与 TICS PRO 连接
P.S.2我需要将 LMX2820 SYSREF 连接到 AFE7950吗？
############## Read me ##############
#In HSDC Pro ADC tab, Select AFE79xx_2x2RX_24410; Data Rate = 245.76M ---> To capture 4 RX channels
#In HSDC Pro ADC tab, Select AFE79xx_1x2FB_44210; Data Rate = 491.52M ---> To capture 2 FB channels
sysParams=AFE.systemParams
sysParams.__init__();sysParams.chipVersion=chipVersion
setupParams.skipFpga = 1 # setup FPGA (TSW14J56) using HSDC Pro
############## Top Level ##############
sysParams.FRef = 491.52
sysParams.FadcRx = 2949.12
sysParams.FadcFb = 2949.12
sysParams.Fdac = 2949.12*3
sysParams.externalClockRx=False
sysParams.externalClockTx=False
############## Digital Chain ##############
##### RX #####
sysParams.ddcFactorRx = [12,12,12,12] #DDC decimation factor for RX A, B, C and D
sysParams.rxNco0 = [[5400,5400], #Band0, Band1 for RXA
[500,500], #Band0, Band1 for RXB
[2500,2500], #Band0, Band1 for RXC
[1800,1800]] #Band0, Band1 for RXD
##### FB #####
sysParams.ddcFactorFb = [12,12] #DDC decimation factor for FB 1 and 2
sysParams.fbNco0 = [500,1800] #Band0 for FB1 and FB2
##### TX #####
sysParams.txEnable = [False,False,False,False]
sysParams.ducFactorTx = [18,18,18,18] #DDC decimation factor for TX A, B, C and D
sysParams.txNco0 = [[5400,5400], #Band0, Band1 for TXA
[500,500], #Band0, Band1 for TXB
[2500,2500], #Band0, Band1 for TXC
[1800,1800]] #Band0, Band1 for TXD
############## JESD ##############
##### ADC-JESD #####
sysParams.jesdSystemMode= [1,1]
#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= [0,0] # 0 - 8b/10b encoding; 2 - 64b/66b encoding
sysParams.LMFSHdRx = ["24410","24410","24410","24410"]
# 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 = ["12410","12410"]
sysParams.rxJesdTxScr = [True,True,True,True]
sysParams.fbJesdTxScr = [True,True]
sysParams.rxJesdTxK = [16,16,16,16]
sysParams.fbJesdTxK = [16,16]
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= [0,0]
sysParams.LMFSHdTx = ["44210","44210","44210","44210"]
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 = [4, 4]
sysParams.jesdRxScr = [True,True,True,True]
sysParams.jesdRxK = [16,16,16,16]
##### JESD Common #####
sysParams.jesdABLvdsSync= True
sysParams.jesdCDLvdsSync= True
sysParams.syncLoopBack = True #JESD Sync signal is connected to FPGA
############## 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 = 245.76 # 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(15,3,0) # bit-wise; 4R,2F,4T
谢谢~