Tool/software:
Our setup is:
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10MHz output from a signal generator to a 0 degrees power splitter.
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Power splitter output to the OSCinputs of both eval boards (equal cables used)
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Same regmaps via TICsPro to both eval boards
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Both eval boards outputs connected to a scope (equal cables used)
But, both output signals are in phase. While mash seed is able to control this offset, the initial offset is up to 180 degrees
With the frequencies used, we should be operating in synchronisation category 1b. We are not using the hardware sync pin.
1.Does any tech note exist with an example for LMX2694 synchronisation to illustrate the proper procedure and some example settings?
2.Can anyone have a look at the tcs regmaps in attachment to see what we are doing wrong?
3.Any advise on how to properly verify the LMX synchronisation feature is properly working?
[SETUP] ADDRESS=888 CLOCK=8 DATA=4 LE=2 PART=LMX2694 IFACE=SPI ADDRESS_I2C=0x0 [PINS] PINNAME00=SysRefReq LOCATION00=1 PINVALUE00=False PINNAME01=SYNC LOCATION01=0 PINVALUE01=False [MODES] NAME00=R114 VALUE00=7471104 NAME01=R113 VALUE01=7405568 NAME02=R112 VALUE02=7340032 NAME03=R111 VALUE03=7274496 NAME04=R110 VALUE04=7208960 NAME05=R109 VALUE05=7143424 NAME06=R108 VALUE06=7078129 NAME07=R107 VALUE07=7012352 NAME08=R106 VALUE08=6946823 NAME09=R105 VALUE09=6898752 NAME10=R104 VALUE10=6815744 NAME11=R103 VALUE11=6750208 NAME12=R102 VALUE12=6684672 NAME13=R101 VALUE13=6619136 NAME14=R100 VALUE14=6553600 NAME15=R99 VALUE15=6488064 NAME16=R98 VALUE16=6422528 NAME17=R97 VALUE17=6356992 NAME18=R96 VALUE18=6291456 NAME19=R95 VALUE19=6225920 NAME20=R94 VALUE20=6160384 NAME21=R93 VALUE21=6094848 NAME22=R92 VALUE22=6029312 NAME23=R91 VALUE23=5963776 NAME24=R90 VALUE24=5898240 NAME25=R89 VALUE25=5832704 NAME26=R88 VALUE26=5767168 NAME27=R87 VALUE27=5701632 NAME28=R86 VALUE28=5636096 NAME29=R85 VALUE29=5570560 NAME30=R84 VALUE30=5505024 NAME31=R83 VALUE31=5439488 NAME32=R82 VALUE32=5373952 NAME33=R81 VALUE33=5308416 NAME34=R80 VALUE34=5242880 NAME35=R79 VALUE35=5177344 NAME36=R78 VALUE36=5111908 NAME37=R77 VALUE37=5046272 NAME38=R76 VALUE38=4980748 NAME39=R75 VALUE39=4917312 NAME40=R74 VALUE40=4849664 NAME41=R73 VALUE41=4784191 NAME42=R72 VALUE42=4718593 NAME43=R71 VALUE43=4653184 NAME44=R70 VALUE44=4637520 NAME45=R69 VALUE45=4521984 NAME46=R68 VALUE46=4457448 NAME47=R67 VALUE47=4390912 NAME48=R66 VALUE48=4325876 NAME49=R65 VALUE49=4259840 NAME50=R64 VALUE50=4199304 NAME51=R63 VALUE51=4128768 NAME52=R62 VALUE52=4064034 NAME53=R61 VALUE53=3997864 NAME54=R60 VALUE54=3934660 NAME55=R59 VALUE55=3866625 NAME56=R58 VALUE56=3833857 NAME57=R57 VALUE57=3735584 NAME58=R56 VALUE58=3670016 NAME59=R55 VALUE59=3604480 NAME60=R54 VALUE60=3538944 NAME61=R53 VALUE61=3473408 NAME62=R52 VALUE62=3408928 NAME63=R51 VALUE63=3342464 NAME64=R50 VALUE64=3276800 NAME65=R49 VALUE65=3228032 NAME66=R48 VALUE66=3146496 NAME67=R47 VALUE67=3080960 NAME68=R46 VALUE68=3016701 NAME69=R45 VALUE69=2998495 NAME70=R44 VALUE70=2891683 NAME71=R43 VALUE71=2818048 NAME72=R42 VALUE72=2752512 NAME73=R41 VALUE73=2686976 NAME74=R40 VALUE74=2621440 NAME75=R39 VALUE75=2607616 NAME76=R38 VALUE76=2505626 NAME77=R37 VALUE77=2458628 NAME78=R36 VALUE78=2360016 NAME79=R35 VALUE79=2293764 NAME80=R34 VALUE80=2228224 NAME81=R33 VALUE81=2170401 NAME82=R32 VALUE82=2098067 NAME83=R31 VALUE83=2049004 NAME84=R30 VALUE84=1978764 NAME85=R29 VALUE85=1913228 NAME86=R28 VALUE86=1836168 NAME87=R27 VALUE87=1769474 NAME88=R26 VALUE88=1707440 NAME89=R25 VALUE89=1639972 NAME90=R24 VALUE90=1574682 NAME91=R23 VALUE91=1507452 NAME92=R22 VALUE92=1441793 NAME93=R21 VALUE93=1377281 NAME94=R20 VALUE94=1374280 NAME95=R19 VALUE95=1255351 NAME96=R18 VALUE96=1179748 NAME97=R17 VALUE97=1114412 NAME98=R16 VALUE98=1048704 NAME99=R15 VALUE99=984655 NAME100=R14 VALUE100=925296 NAME101=R13 VALUE101=868352 NAME102=R12 VALUE102=806913 NAME103=R11 VALUE103=720920 NAME104=R10 VALUE104=659672 NAME105=R9 VALUE105=595460 NAME106=R8 VALUE106=532480 NAME107=R7 VALUE107=458930 NAME108=R6 VALUE108=423938 NAME109=R5 VALUE109=328680 NAME110=R4 VALUE110=265795 NAME111=R3 VALUE111=198210 NAME112=R2 VALUE112=132352 NAME113=R1 VALUE113=67592 NAME114=R0 VALUE114=8216 [FLEX] Fosc_FREQ=10 FoutA_FREQ=3600 FoutB_FREQ=14400 Fpd_FREQ=20 Fvco_FREQ=14400 btn_SimplifyFraction=Simplify Fraction btn_ToggleSyncPin=Toggle Sync Pin btn_ToggleSysRefPin=Toggle SysRefReq Pin btn_UseLargeFraction=Use Large Fraction flexCurrent=379 flexINCLUDED_DIVIDE=1 flexKVCO=204 flexSEG1=2 flexSEG2=1 flexSEG3=1 flexSYSREFPHASESHIFT=0 flexSYSREF_INTERPOL_FREQ=3000 flexSYSREF_IncludeDivide=1
