Hi,
Though my customer is evaluating LMX2571, Analog FM modulation doesn't go well on FSK I2S mode.
Negative side of demodulated signal does not outputted.
Condition is Fosc=20MHz、Fout=480MHz, and attached file(Please change the extension from "txt"to "tcs").
[SETUP] ADDRESS=888 CLOCK=8 DATA=4 LE=2 PART=LMX2571 IFACE=SPI ADDRESS_I2C=0x0 [PINS] PINNAME00=TrCtl LOCATION00=7 PINVALUE00=True PINNAME01=CE LOCATION01=0 PINVALUE01=True [MODES] NAME00=R60 VALUE00=3973120 NAME01=R58 VALUE01=3836928 NAME02=R53 VALUE02=3504134 NAME03=R47 VALUE03=3104768 NAME04=R46 VALUE04=3014682 NAME05=R42 VALUE05=2753040 NAME06=R41 VALUE06=2689040 NAME07=R40 VALUE07=2625564 NAME08=R39 VALUE08=2560507 NAME09=R35 VALUE09=2296963 NAME10=R34 VALUE10=2232577 NAME11=R33 VALUE11=2162688 NAME12=R32 VALUE12=2097152 NAME13=R31 VALUE13=2031616 NAME14=R30 VALUE14=1966080 NAME15=R29 VALUE15=1900544 NAME16=R28 VALUE16=1835008 NAME17=R27 VALUE17=1769472 NAME18=R26 VALUE18=1703936 NAME19=R25 VALUE19=1638400 NAME20=R24 VALUE20=1572878 NAME21=R23 VALUE21=1510916 NAME22=R22 VALUE22=1475972 NAME23=R21 VALUE23=1376513 NAME24=R20 VALUE24=1323035 NAME25=R19 VALUE25=1246184 NAME26=R18 VALUE26=1179648 NAME27=R17 VALUE27=1114112 NAME28=R16 VALUE28=1048576 NAME29=R15 VALUE29=983040 NAME30=R14 VALUE30=917504 NAME31=R13 VALUE31=851968 NAME32=R12 VALUE32=786432 NAME33=R11 VALUE33=720896 NAME34=R10 VALUE34=655360 NAME35=R9 VALUE35=589824 NAME36=R8 VALUE36=525326 NAME37=R7 VALUE37=462468 NAME38=R6 VALUE38=427396 NAME39=R5 VALUE39=327937 NAME40=R4 VALUE40=270366 NAME41=R3 VALUE41=201216 NAME42=R2 VALUE42=131072 NAME43=R1 VALUE43=96768 NAME44=R0 VALUE44=131 [FLEX] Fosc_F1_FREQ=20 Fosc_F2_FREQ=20 Fosc_FREQ=20 Fout_F1_FREQ=480 Fout_F2_FREQ=480 Fout_FREQ=480 Fpd_F1_FREQ=80 Fpd_F2_FREQ=80 Fpd_FREQ=80 Fvco_F1_FREQ=4800 Fvco_F2_FREQ=4800 Fvco_FREQ=4800 TrCtl_Pin=1 btn_SimplifyFraction=Simplify Fraction btn_SpurBGone=Spur-b-Gone flexCHDIV1=5 flexCHDIV2=1 flexCurrent=50.3 flexEXTVCO_CHDIV=0 flexExtVCO_FREQ=480 flexFRAC_ORDER=2 flexIntVCO_FREQ=4800 flexKpd=2.5 flexKvco=56 flexMULT=4 flexOUTBUF_RX_EN=0 flexOUTBUF_RX_PWR=14 flexOUTBUF_TX_EN=1 flexOUTBUF_TX_PWR=14 flexOutputDivide=10 flexPFD_DELAY=4 flexPLL_DEN=8000000 flexPLL_N=30 flexPLL_NUM=0 flexPLL_N_PRE=0 flexPLL_R=1 flexPLL_R_PRE=1
Could you check if register setting is correct?
And please let me know what we should check.
Best Regards,
Kuramochi
