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Original question:

LMK04828: LMK04828 with 100 MHz

LMK04828: Linux driver for the LMK04828 EVK

Alon Sechan
Prodigy 20 points
Part Number: LMK04828

Tool/software:

Hi,
Is there an option to control/configure the LMK04828 Evaluation Board via a Linux OS (W/O using the windows GUI)?

Thanks,
Alon Sechan

  • 0
    Prodigy 20 points

    Hi,
    Another topic,

    We are observing unexpected behavior in our PLL phase noise measurements under the following conditions:

    1. When a single reference input is used, the output phase noise is as expected and remains constant (in each measurement).
    2. When multiple reference inputs (three 10 MHz sources) are connected, the PLL output phase noise deteriorates.

    We suspect the issue might be due to noise coupling or crosstalk between the three reference inputs. In our design, we plan to use all three reference inputs with different 10 MHz sources. Each source is independent and not synchronized.

    Could you provide guidance on how to mitigate this phase noise degradation when multiple reference inputs are in use?

    Thanks,
    Alon

  • 0 in reply to Alon Sechan
    TI__Mastermind 23791 points

    Hi Alon, 
    We do not have linux driver support unfortunately. 
    Can you share you configuration (.tcs) please? 

    Best regards, 

    Vicente 

  • 0 in reply to vicente flores prado
    Prodigy 20 points 
    [SETUP]
ADDRESS=888
CLOCK=8
DATA=4
LE=2
PART=LMK04828B
IFACE=SPI
ADDRESS_I2C=0x0

[PINS]
PINNAME00=SYNC
LOCATION00=7
PINVALUE00=False
PINNAME01=CLKin0_SEL
LOCATION01=0
PINVALUE01=False
PINNAME02=RESET
LOCATION02=3
PINVALUE02=False

[MODES]
NAME00=R0 (INIT)
VALUE00=144
NAME01=R0
VALUE01=16
NAME02=R2
VALUE02=512
NAME03=R3
VALUE03=774
NAME04=R4
VALUE04=1232
NAME05=R5
VALUE05=1371
NAME06=R6
VALUE06=1536
NAME07=R12
VALUE07=3153
NAME08=R13
VALUE08=3332
NAME09=R256
VALUE09=65560
NAME10=R257
VALUE10=65877
NAME11=R258
VALUE11=66133
NAME12=R259
VALUE12=66305
NAME13=R260
VALUE13=66560
NAME14=R261
VALUE14=66816
NAME15=R262
VALUE15=67313
NAME16=R263
VALUE16=67412
NAME17=R264
VALUE17=67596
NAME18=R265
VALUE18=67925
NAME19=R266
VALUE19=68181
NAME20=R267
VALUE20=68352
NAME21=R268
VALUE21=68608
NAME22=R269
VALUE22=68864
NAME23=R270
VALUE23=69361
NAME24=R271
VALUE24=69381
NAME25=R272
VALUE25=69640
NAME26=R273
VALUE26=69973
NAME27=R274
VALUE27=70229
NAME28=R275
VALUE28=70400
NAME29=R276
VALUE29=70656
NAME30=R277
VALUE30=70912
NAME31=R278
VALUE31=71417
NAME32=R279
VALUE32=71424
NAME33=R280
VALUE33=71704
NAME34=R281
VALUE34=72021
NAME35=R282
VALUE35=72277
NAME36=R283
VALUE36=72448
NAME37=R284
VALUE37=72704
NAME38=R285
VALUE38=72960
NAME39=R286
VALUE39=73457
NAME40=R287
VALUE40=73523
NAME41=R288
VALUE41=73736
NAME42=R289
VALUE42=74069
NAME43=R290
VALUE43=74325
NAME44=R291
VALUE44=74496
NAME45=R292
VALUE45=74752
NAME46=R293
VALUE46=75008
NAME47=R294
VALUE47=75513
NAME48=R295
VALUE48=75520
NAME49=R296
VALUE49=75784
NAME50=R297
VALUE50=76117
NAME51=R298
VALUE51=76373
NAME52=R299
VALUE52=76544
NAME53=R300
VALUE53=76800
NAME54=R301
VALUE54=77056
NAME55=R302
VALUE55=77561
NAME56=R303
VALUE56=77568
NAME57=R304
VALUE57=77830
NAME58=R305
VALUE58=78165
NAME59=R306
VALUE59=78421
NAME60=R307
VALUE60=78592
NAME61=R308
VALUE61=78848
NAME62=R309
VALUE62=79104
NAME63=R310
VALUE63=79601
NAME64=R311
VALUE64=79667
NAME65=R312
VALUE65=79872
NAME66=R313
VALUE66=80132
NAME67=R314
VALUE67=80396
NAME68=R315
VALUE68=80640
NAME69=R316
VALUE69=80896
NAME70=R317
VALUE70=81160
NAME71=R318
VALUE71=81411
NAME72=R319
VALUE72=81664
NAME73=R320
VALUE73=81927
NAME74=R321
VALUE74=82176
NAME75=R322
VALUE75=82432
NAME76=R323
VALUE76=82705
NAME77=R324
VALUE77=82945
NAME78=R325
VALUE78=83327
NAME79=R326
VALUE79=83496
NAME80=R327
VALUE80=83754
NAME81=R328
VALUE81=83970
NAME82=R329
VALUE82=84290
NAME83=R330
VALUE83=84482
NAME84=R331
VALUE84=84758
NAME85=R332
VALUE85=84992
NAME86=R333
VALUE86=85248
NAME87=R334
VALUE87=85696
NAME88=R335
VALUE88=85887
NAME89=R336
VALUE89=86019
NAME90=R337
VALUE90=86274
NAME91=R338
VALUE91=86528
NAME92=R339
VALUE92=86784
NAME93=R340
VALUE93=87041
NAME94=R341
VALUE94=87296
NAME95=R342
VALUE95=87553
NAME96=R343
VALUE96=87808
NAME97=R344
VALUE97=88065
NAME98=R345
VALUE98=88320
NAME99=R346
VALUE99=88586
NAME100=R347
VALUE100=89043
NAME101=R348
VALUE101=89120
NAME102=R349
VALUE102=89344
NAME103=R350
VALUE103=89600
NAME104=R351
VALUE104=89867
NAME105=R352
VALUE105=90112
NAME106=R353
VALUE106=90369
NAME107=R354
VALUE107=90692
NAME108=R355
VALUE108=90880
NAME109=R356
VALUE109=91136
NAME110=R357
VALUE110=91404
NAME111=R369
VALUE111=94634
NAME112=R370
VALUE112=94722
NAME113=R380
VALUE113=97301
NAME114=R381
VALUE114=97587
NAME115=R358
VALUE115=91648
NAME116=R359
VALUE116=91904
NAME117=R360
VALUE117=92172
NAME118=R361
VALUE118=92505
NAME119=R362
VALUE119=92704
NAME120=R363
VALUE120=92928
NAME121=R364
VALUE121=93184
NAME122=R365
VALUE122=93440
NAME123=R366
VALUE123=93715
NAME124=R371
VALUE124=95008
NAME125=R386
VALUE125=98816
NAME126=R387
VALUE126=99072
NAME127=R388
VALUE127=99328
NAME128=R389
VALUE128=99584
NAME129=R392
VALUE129=100352
NAME130=R393
VALUE130=100608
NAME131=R394
VALUE131=100864
NAME132=R395
VALUE132=101120
NAME133=R8189
VALUE133=2096384
NAME134=R8190
VALUE134=2096640
NAME135=R8191
VALUE135=2096979

[FLEX]
bSetFeedback_CLKin1=CLKin1 (External)
bSetFeedback_DCLKout6=DCLKout6
bSetFeedback_DCLKout8=DCLKout8
bSetFeedback_SYSREFDIV=SYSREF divider
bSetJESD204B_Continuous=Continuous
bSetJESD204B_NoJESD204B_withoutSYSREFDivider=No JESD204B
bSetJESD204B_Pulser=Pulser
bSetJESD204B_Reclocked=Reclocked
bSetJESD204B_SYSREFREQ=SYSREF Request
bSetMode_Distribution=Set Distribution
bSetMode_DualLoop=Set Dual Loop
bSetMode_DualLoop0DelayCascaded=Set Dual Loop 0-Delay Cascaded
bSetMode_DualLoop0DelayNested=Set Dual Loop 0-Delay Nested
bSetMode_SingleLoop=Set Single Loop
bSetMode_SingleLoop0Delay=Set Single Loop 0-Delay
bSet_CLKin0toOff=CLKin0 Off
bSet_CLKin0toPLL1=CLKin0 drives PLL1
bSet_CLKin0toSYSREF=CLKin0 drives SYNC/SYSREF
bSet_CLKin0toSYSREF_Direct=CLKin0 drives SYNC/SYSREF direct
bSet_CLKin1_ExternalVCO=CLKin1 drives Clock Distribution (external VCO/distribution mode)
bSet_CLKin1toOff=CLKin1 Off
bSet_CLKin1toPLL1=CLKin1 drives PLL1
bSet_CLKin2_Input=CLKin2 for PLL1
CLKDIST_FREQ=2400
CLKin0_FREQ=10
CLKin1_FREQ=10
CLKin2_FREQ=10
CLKin_SEL_AUTOPINSMODE=2
EXT_VCXO_FREQ=100
FB_MUX_FREQ=100
FB_MUX_FREQ_MHz=
OSC_FREQ=100
OSCin_SOURCE=0
PLL1_PD_FREQ=10
PLL2_PD_FREQ=100
PLL_FBMUX_WARNING_TEXT=
PLL_WARNING_TEXT=
WARNING_TEXT_PLL1=
WARNING_TEXT_PLL2=
CLKDIST_FREQ=2400
SYSREF_FREQ=0.78125
bSYNC_DIS_AllOff=All Off
bSYNC_DIS_AllOn=All On
bSYNC_DIS_CLKOff=DC Off
bSYNC_DIS_CLKOn=DC On
bSYNC_Dividers=SYNC Dividers
bSendPulsesViaSPI=Send Pulses
bSetJESD204B_Continuous=Continuous
bSetJESD204B_Pulser=Pulser
bSetJESD204B_RX_CLKin0=CLKin0
bSetJESD204B_RX_CLKin0_Bypass=CLKin0 Bypass
bSetJESD204B_RX_Ignore=None
bSetJESD204B_RX_Reclocked=Re-Clocked
bSetJESD204B_RX_SYNCpin=SYNC Pin
bSetJESD204B_SYSREFREQ=SYSREF Request
bSetSYNC_Normal=Normal
stSYSREF_CLR_WARNING=
CLKDIST_FREQ=2400
CLKout0_FREQ=100
CLKout10_FREQ=300
CLKout11_FREQ=300
CLKout12_FREQ=400
CLKout13_FREQ=400
CLKout1_FREQ=100
CLKout2_FREQ=200
CLKout3_FREQ=200
CLKout4_FREQ=300
CLKout5_FREQ=300
CLKout6_FREQ=100
CLKout7_FREQ=100
CLKout8_FREQ=300
CLKout9_FREQ=300
OSCout_FREQ=100
SDCLKout11_TEXT=
SDCLKout13_TEXT=
SDCLKout1_TEXT=
SDCLKout3_TEXT=
SDCLKout5_TEXT=
SDCLKout7_TEXT=
SDCLKout9_TEXT=
SYSREF_FREQ=0.78125
Additional_Icc_FMT=0
HW0_FMT=0
HW0_Hide_FMT=
HW10_FMT=0
HW10_Hide_FMT=
HW11_FMT=0
HW11_Hide_FMT=
HW12_FMT=0
HW12_Hide_FMT=
HW13_FMT=0
HW13_Hide_FMT=
HW1_FMT=0
HW1_Hide_FMT=
HW2_FMT=0
HW2_Hide_FMT=
HW3_FMT=0
HW3_Hide_FMT=
HW4_FMT=0
HW4_Hide_FMT=
HW5_FMT=0
HW5_Hide_FMT=
HW6_FMT=0
HW6_Hide_FMT=
HW7_FMT=0
HW7_Hide_FMT=
HW8_FMT=0
HW8_Hide_FMT=
HW9_FMT=0
HW9_Hide_FMT=
OSCoutHW_FMT=0
OSCoutHW_Hide_FMT=
PLL1_LED_FMT=0
PLL2_LED_FMT=0
VCXO_FMT=0
bButtonCC2=Calculate
lb_Additional_Icc=0
lb_External_Power=0
lb_IC_Power=0
lb_PLL1_LED=4.3
lb_PLL2_LED=4.3
lb_Total_Current=0
lb_Total_Power=0
lb_VCXO=45
  • 0 in reply to Alon Sechan
    Prodigy 20 points

    Hi Vicente,
    Let me know if additional information is needed. We are still facing the same issue.

    Thanks,
    Alon

  • 0 in reply to Alon Sechan
    TI__Mastermind 23791 points

    Hi Aloe, 
    Can you provide a clock tree explaining your topology? 
    I would need expect phase noise to degrade but rather maybe an increase in power for spurs when all 3 CLKinX outputs are enabled at the same time. 

    The TICSpro config can be saved as follows: 

    There is an insert button as well where you can upload the file directly. 
    Best regards, 

    Vicente 

  • 0
    Prodigy 20 points

    Hi Vicente,



    0638.LMK04828 Setup.pdf

    We use passive Passive Hydrogen Maser (PHM) as the reference for our test.

    Thanks,
    Alon 

  • 0 in reply to Alon Sechan
    TI__Mastermind 19000 points

    Hello,

    The team is out for the US holiday - please expect a response by 1/2/26.

    Thanks,

    Kadeem

  • 0 in reply to Kadeem Samuel
    TI__Mastermind 23791 points

    Hi Alon, 
    Can you please upload your configuration file? 
    If you have concerns due to privacy you can also email me: v-floresprado@ti.com or create a new post on the internal thread which is out of public view. 

    On a side note - are these all 10MHz Sine Waves - For the input clocks?


    Best regards, 

    Vicente