DATACONVERTERPRO-SW: dynamic configuration window description

Hi Camilo,

Thanks for your reply. Looking through the guide you attached, i think bringup must be a problem. Im trying to collect data only from one channel, but when i disable all channels except the RxC channel, in AFE iGUI in JESD TX tab all JESD lines become inactive. Here's my bringup code with some changes for new lmk configuration

##############		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			= 256 #491.52
sysParams.FadcRx		= 3072
sysParams.FadcFb		= 3072
sysParams.Fdac			= 3072*3
sysParams.externalClockRx=False
sysParams.externalClockTx=False
													
##############		Digital Chain		##############

		#####	RX	#####
sysParams.rxEnable = [True,True,True,True]
sysParams.ddcFactorRx	=	[32]*4			#DDC decimation factor for RX A, B, C and D
##sysParams.numRxNCO		=	2
sysParams.rxNco0		= 	[[3700,5400],			#Band0, Band1 for RXA 
							[1000,2000],        	#Band0, Band1 for RXB 
							[1518,1542],        	#Band0, Band1 for RXC 
							[1518,1542]]        	#Band0, Band1 for RXD
##sysParams.numBandsRx 	= 	[1,1,1,1]
##sysParams.rxNco1		= 	[[5400,5400],			#Band0, Band1 for RXA 
##							[1643.5,1643.5],       	#Band0, Band1 for RXB 
##							[2500,2500],        	#Band0, Band1 for RXC 
##							[1800,1800]]        	#Band0, Band1 for RXD

		#####	FB	#####
sysParams.fbEnable = [False,False]
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= [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= [0,0]						# 0 - 8b/10b encoding; 2 - 64b/66b encoding 
sysParams.LMFSHdRx		= ["12410"]*4
													# 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.rxDataMux		= [0,1,2,3,4,5,6,7]
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		= 1024 # Valid only when lmkParams.pllEn = False
lmkParams.lmkFrefClk	= True
setupParams.fpgaRefClk	= 128 #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
lmk.rawWriteLogEn = 1
device.delay_time = 0
#-------------------------------------------------------------------------------------------------#
AFE.deviceBringup()

AFE.TOP.overrideTdd(15,3,0)	# bit-wise; 4R,2F,4T

##lmk.writeReg(352,0x00)
##lmk.writeReg(353,0x02)
##lmk.writeReg(358,0x00)
##lmk.writeReg(359,0x00)
##lmk.writeReg(360,0x19)

Regards,

Oleg

Hi Oleg,

Looking at your configuration I have a couple of comments:

• The maximum sample rate for the ADCs of the AFE7900 is 3GSPS but you are running them at 3.072GSPS. This is outside the maximum.
• The Nyquist boundary will land inside the observable BW of your NCO for RXC. Because your Nyquist boundary is Fs/2 = 3072/2 = 1536MHz and your NCO = 1518MHz with interface rate of 96MSPS. We usually recommend to frequency plan such that the boundaries are as far away as possible.

We can help generate a configuration for you. If your band of interest is around 1.5GHz one suggestion would be to lower the ADC Fs to move the Nyquist  boundary away. Is there a sampling rate below 3GSPS that you would like us to use? Or if you do not have a specific sample rate requirement, would you like us to pick one for testing purposes?

Best,

Camilo

Hi Camilo,

very grateful for your comments. Could you provide us with configuration with fs=2880 MHz.

Regards,

Oleg

Update to the previous message: we tried to run AFE at this frequency, but it did not work and the log showed the message "Fdac not compatible with VCO. Valid ranges of Fdac*(1/2/3/4/5/6) are: ((7200.0, 7680.0), (8847.36, 9216.0), (9830.4, 10240.0), (11796.48, 12288.0))", so we tried a different value and achieved success with a frequency of 2976 MHz, which also suits us. Please answer me: can we do without setting the DAC frequency? Because for our research we do not need a DAC at all.

Regards,

Oleg

Hi Camilo,

Thank you very much for your configuration and quick responses. Your answers helped me complete all the remaining tests.

Regards,

Oleg