LMK04610：10MHz reference clock of PLL1 configuration

Hi,

To lock PLL1 with the 10MHz reference input and 122.88MHz VCXO, your PFD frequency should be greatest common divisor of both frequencies, which should be 80kHz.

Hence, you need to change CLKIN0_PLL1_RDIV value to "125" and PLL1_NDIV value to "1536" in PLL1 section. With these updates, PLL1 should lock for 10MHz input reference at CLKin0.

Thanks!

Regards,
Ajeet Pal

Dear Ajeet,

I have set the CLKIN0_PLL1_RDIV value to "125" and the PLL1_NDIV value to "1536" in PLL1 section, but it is unlocked on PLL1.

My configure as below:

[SETUP]
ADDRESS=888
CLOCK=8
DATA=4
LE=2
PART=LMK04610
IFACE=SPI_CLKLOW
ADDRESS_I2C=0x0

[PINS]
PINNAME00=SYNC
LOCATION00=7
PINVALUE00=False
PINNAME01=RESETN
LOCATION01=3
PINVALUE01=True
PINNAME02=CLKIN_SEL
LOCATION02=1
PINVALUE02=False

[MODES]
NAME00=R0
VALUE00=0
NAME01=R1
VALUE01=256
NAME02=R2
VALUE02=512
NAME03=R3
VALUE03=838
NAME04=R4
VALUE04=1080
NAME05=R5
VALUE05=1283
NAME06=R6
VALUE06=1553
NAME07=R7
VALUE07=1792
NAME08=R8
VALUE08=2048
NAME09=R9
VALUE09=2304
NAME10=R10
VALUE10=2560
NAME11=R11
VALUE11=2816
NAME12=R12
VALUE12=3153
NAME13=R13
VALUE13=3336
NAME14=R14
VALUE14=3584
NAME15=R15
VALUE15=3840
NAME16=R16
VALUE16=4127
NAME17=R17
VALUE17=4352
NAME18=R18
VALUE18=4612
NAME19=R19
VALUE19=4880
NAME20=R20
VALUE20=5248
NAME21=R21
VALUE21=5384
NAME22=R22
VALUE22=5712
NAME23=R23
VALUE23=5888
NAME24=R24
VALUE24=6144
NAME25=R25
VALUE25=6417
NAME26=R26
VALUE26=6666
NAME27=R31
VALUE27=7936
NAME28=R32
VALUE28=8435
NAME29=R33
VALUE29=8459
NAME30=R34
VALUE30=8952
NAME31=R39
VALUE31=10004
NAME32=R40
VALUE32=10368
NAME33=R41
VALUE33=10516
NAME34=R42
VALUE34=10880
NAME35=R43
VALUE35=11008
NAME36=R44
VALUE36=11328
NAME37=R45
VALUE37=11520
NAME38=R46
VALUE38=11798
NAME39=R47
VALUE39=12033
NAME40=R48
VALUE40=12289
NAME41=R49
VALUE41=12556
NAME42=R50
VALUE42=12800
NAME43=R51
VALUE43=13056
NAME44=R52
VALUE44=13411
NAME45=R53
VALUE45=13568
NAME46=R54
VALUE46=13827
NAME47=R55
VALUE47=14080
NAME48=R56
VALUE48=14435
NAME49=R57
VALUE49=14592
NAME50=R58
VALUE50=14851
NAME51=R59
VALUE51=15104
NAME52=R60
VALUE52=15459
NAME53=R61
VALUE53=15616
NAME54=R62
VALUE54=15971
NAME55=R63
VALUE55=16128
NAME56=R64
VALUE56=16387
NAME57=R65
VALUE57=16640
NAME58=R66
VALUE58=16899
NAME59=R67
VALUE59=17152
NAME60=R68
VALUE60=17416
NAME61=R69
VALUE61=17664
NAME62=R70
VALUE62=17928
NAME63=R71
VALUE63=18176
NAME64=R72
VALUE64=18440
NAME65=R73
VALUE65=18688
NAME66=R74
VALUE66=18952
NAME67=R75
VALUE67=19200
NAME68=R76
VALUE68=19464
NAME69=R77
VALUE69=19712
NAME70=R78
VALUE70=19976
NAME71=R79
VALUE71=20224
NAME72=R80
VALUE72=20488
NAME73=R81
VALUE73=20736
NAME74=R82
VALUE74=21000
NAME75=R83
VALUE75=21248
NAME76=R84
VALUE76=21520
NAME77=R85
VALUE77=21760
NAME78=R86
VALUE78=22031
NAME79=R87
VALUE79=22272
NAME80=R88
VALUE80=22591
NAME81=R89
VALUE81=23034
NAME82=R90
VALUE82=23073
NAME83=R91
VALUE83=23360
NAME84=R92
VALUE84=23754
NAME85=R93
VALUE85=23822
NAME86=R94
VALUE86=24230
NAME87=R95
VALUE87=24320
NAME88=R96
VALUE88=24576
NAME89=R97
VALUE89=24843
NAME90=R98
VALUE90=25336
NAME91=R99
VALUE91=25344
NAME92=R100
VALUE92=25664
NAME93=R101
VALUE93=25856
NAME94=R102
VALUE94=26112
NAME95=R103
VALUE95=26368
NAME96=R104
VALUE96=26624
NAME97=R105
VALUE97=26880
NAME98=R106
VALUE98=27145
NAME99=R107
VALUE99=27393
NAME100=R108
VALUE100=27648
NAME101=R109
VALUE101=27944
NAME102=R110
VALUE102=28187
NAME103=R111
VALUE103=28418
NAME104=R112
VALUE104=28672
NAME105=R113
VALUE105=28928
NAME106=R114
VALUE106=29204
NAME107=R115
VALUE107=29440
NAME108=R116
VALUE108=29700
NAME109=R117
VALUE109=29952
NAME110=R118
VALUE110=30209
NAME111=R119
VALUE111=30465
NAME112=R120
VALUE112=30975
NAME113=R121
VALUE113=30976
NAME114=R122
VALUE114=31366
NAME115=R123
VALUE115=31648
NAME116=R124
VALUE116=31752
NAME117=R125
VALUE117=32000
NAME118=R126
VALUE118=32256
NAME119=R127
VALUE119=32564
NAME120=R128
VALUE120=32778
NAME121=R129
VALUE121=33024
NAME122=R130
VALUE122=33280
NAME123=R131
VALUE123=33536
NAME124=R132
VALUE124=33807
NAME125=R133
VALUE125=34049
NAME126=R134
VALUE126=34305
NAME127=R135
VALUE127=34560
NAME128=R136
VALUE128=34880
NAME129=R137
VALUE129=35072
NAME130=R138
VALUE130=35328
NAME131=R139
VALUE131=35648
NAME132=R140
VALUE132=35840
NAME133=R141
VALUE133=36096
NAME134=R142
VALUE134=36352
NAME135=R143
VALUE135=36672
NAME136=R144
VALUE136=36864
NAME137=R145
VALUE137=37120
NAME138=R146
VALUE138=37504
NAME139=R147
VALUE139=37760
NAME140=R148
VALUE140=37892
NAME141=R149
VALUE141=38159
NAME142=R150
VALUE142=38416
NAME143=R151
VALUE143=38688
NAME144=R152
VALUE144=38944
NAME145=R153
VALUE145=39296
NAME146=R155
VALUE146=39680
NAME147=R156
VALUE147=39968
NAME148=R171
VALUE148=43776
NAME149=R172
VALUE149=44032
NAME150=R173
VALUE150=44288
NAME151=R175
VALUE151=44800
NAME152=R176
VALUE152=45057
NAME153=R190
VALUE153=48643
NAME154=R246
VALUE154=62976
NAME155=R247
VALUE155=63232
NAME156=R249
VALUE156=63751
NAME157=R250
VALUE157=64215
NAME158=R252
VALUE158=64512
NAME159=R253
VALUE159=64768
NAME160=R254
VALUE160=65024
NAME161=R255
VALUE161=65280
NAME162=R256
VALUE162=65536
NAME163=R257
VALUE163=65792
NAME164=R258
VALUE164=66048
NAME165=R259
VALUE165=66304
NAME166=R260
VALUE166=66560
NAME167=R261
VALUE167=66816
NAME168=R262
VALUE168=67072
NAME169=R263
VALUE169=67328
NAME170=R264
VALUE170=67584
NAME171=R265
VALUE171=67840
NAME172=R266
VALUE172=68096
NAME173=R267
VALUE173=68352
NAME174=R269
VALUE174=68864
NAME175=R270
VALUE175=69120
NAME176=R272
VALUE176=69632
NAME177=R273
VALUE177=69888
NAME178=R274
VALUE178=70144
NAME179=R277
VALUE179=70912
NAME180=R278
VALUE180=71168
NAME181=R279
VALUE181=71424
NAME182=R281
VALUE182=71936
NAME183=R282
VALUE183=72192
NAME184=R292
VALUE184=74760
NAME185=R295
VALUE185=75524
NAME186=R296
VALUE186=75777
NAME187=R297
VALUE187=76037
NAME188=R298
VALUE188=76289
NAME189=R299
VALUE189=76548
NAME190=R300
VALUE190=76805
NAME191=R301
VALUE191=77060
NAME192=R302
VALUE192=77313
NAME193=R304
VALUE193=77829
NAME194=R305
VALUE194=78085
NAME195=R307
VALUE195=78597
NAME196=R308
VALUE196=78853
NAME197=R309
VALUE197=79109
NAME198=R312
VALUE198=79877
NAME199=R313
VALUE199=80133
NAME200=R314
VALUE200=80389
NAME201=R316
VALUE201=80901
NAME202=R317
VALUE202=81157
NAME203=R320
VALUE203=81930
NAME204=R321
VALUE204=82185
NAME205=R322
VALUE205=82496
NAME206=R323
VALUE206=82688
NAME207=R325
VALUE207=83200
NAME208=R326
VALUE208=83516
NAME209=R329
VALUE209=84224
NAME210=R330
VALUE210=84480
NAME211=R331
VALUE211=84736
NAME212=R332
VALUE212=84992
NAME213=R334
VALUE213=85504
NAME214=R336
VALUE214=86016
NAME215=R337
VALUE215=86292
NAME216=R338
VALUE216=86543
NAME217=R339
VALUE217=86784

[FLEX]
FLOW_MODE_BYP1=0
FLOW_MODE_BYP2A=0
FLOW_MODE_BYP2B=0
FLOW_MODE_CPSL2O=0
FLOW_MODE_CPSL2P=0
FLOW_MODE_OPSL2O=0
FLOW_MODE_OPSL2P=0
FLOW_MODE_PDLO=0
FLOW_MODE_PDLP=0
FLOW_MODE_PSL1O=0
FLOW_MODE_PSL1P=0
BTN_DEV_STARTUP=BTN_DEV_STARTUP
BTN_GET_SILICON=BTN_GET_SILICON
BTN_GET_STATUS=BTN_GET_STATUS
BTN_SWRST=BTN_SWRST
BTN_UPDATE_VERSION=BTN_UPDATE_VERSION
TICS_VERSION=1.7.0.0, 09-Jan-20 INI:2018-08-10, v1.0.1 PY:20170518
TICS_VERSION_NOTE=File from an earlier device profile loaded. Would like like to update the TCS file?
EVM_CLKin0_FREQ=10
EVM_CLKin0_SE=1
EVM_CLKin1_FREQ=122.88
EVM_CLKin1_SE=1
EVM_CLKout10_Info=Powerdown
EVM_CLKout10_freq=0
EVM_CLKout1_Info=HSDS
EVM_CLKout1_freq=122.88
EVM_CLKout2_Info=Powerdown
EVM_CLKout2_freq=0
EVM_CLKout3_Info=Powerdown
EVM_CLKout3_freq=0
EVM_CLKout4_Info=HSDS
EVM_CLKout4_freq=122.88
EVM_CLKout5_Info=Powerdown
EVM_CLKout5_freq=0
EVM_CLKout6_Info=HSDS
EVM_CLKout6_freq=122.88
EVM_CLKout7_Info=Powerdown
EVM_CLKout7_freq=0
EVM_CLKout8_Info=HSDS
EVM_CLKout8_freq=122.88
EVM_CLKout9_Info=Powerdown
EVM_CLKout9_freq=0
EVM_DEVICE_TOPMARK=LMK04610
EVM_OSCin_FREQ=122.88
EVM_OSCin_SE=1
EVM_OSCout_Info=Powerdown
EVM_OSCout_freq=122.88
EVM_VCTRL=0
BTN_GET_CLKMUX=BTN_GET_CLKMUX
BTN_GET_STORAGE=Read Storagecell
BTN_MAIL_LF1=Request Support @ TI
BTN_PLL1_NDIV_SWRST=RST
BTN_PLL1_RDIV_SWRST=RST
BTN_PLL1_SWRST=RST
CLKIN0_FREQ=10
CLKIN1_FREQ=122.88
INPUT_CLKIN0_PLL1_RDIV=125
INPUT_CLKIN1_PLL1_RDIV=1536
INPUT_PLL1_NDIV=1536
PFDCLKIN0_freq=0.08
PFDCLKIN1_freq=0.08
PFDCLKIN_freq=0.08
PLL1_EN_TIE_LOWCNT=1
PLL1_STORAGE_CELL_7t0=
VCXOPLL1_FREQ=122.88
BTN_GET_PINSEL_DIV=Read
BTN_OSCOUT_SWRST=RST
OSCOUT_DRV_CURR_HCSL=0
OSCOUT_DRV_MODE1_TEXT=DRV_CURR
OSCOUT_DRV_MODE2_TEXT=DRV_RLOAD
OSCOUT_DRV_MODE3_TEXT=DRV_MUTE
OSCOUT_DRV_MUTE_HCSL=0
OSCOUT_DRV_MUTE_HCSL_OPEN=0
OSCOUT_DRV_RLOAD_HCSL_16mA=0
OSCOUT_DRV_RLOAD_HCSL_4mA=0
OSCOUT_DRV_RLOAD_HCSL_6_8mA=0
OSCOUT_PINSEL_DIV_VALUE=0
BTN_GET_STATUS_HOLDOVER=BTN_GET_STATUS_HOLDOVER
BTN_PLL1_HOLDOVERCNT_SWRST=RST
BTN_PLL1_HOLDOVER_DLD_SWRST=RST
BTN_PLL1_HOLDOVER_LOCKDET_SWRST=RST
HOLDOVER_DLD_COPY=0
HOLDOVER_ERROR=For a proper function, the Digital Clock must \nbe switched on.
HOLDOVER_LOL_COPY=0
HOLDOVER_LOS_COPY=0
PLL1_HOLDOVER_MAX_CNT_SECONDS=1
PLL1_HOLDOVER_MAX_CNT_UNIT=2
BTN_MAIL_LF2=Request Support @ TI
BTN_PLL2_AC_REQ=RST
BTN_PLL2_NDIV_SWRST=RST
BTN_PLL2_SWRST=RST
CLKIN_FREQ=122.88
OUTCH_CH5_freq=0
OUTCH_CH6_freq=0
PFDPLL2_FREQ=245.76
PLL2_CLKin_freq=122.88
PLL2_DBL_COMBOBOX=2
PLL2_STRG_INITVAL_PRESET=8
VCOPLL2_FREQ=5898.24
VCOPRESCPLL2_freq=983.04
VCXOPLL2_FREQ=122.88
BTN_CH10_SWRST=RST
BTN_CH10_SWRST_SHOW=RST
BTN_CH1_SWRST=RST
BTN_CH1_SWRST_SHOW=RST
BTN_CH2_SWRST=RST
BTN_CH2_SWRST_SHOW=RST
BTN_CH34_SWRST=RST
BTN_CH34_SWRST_SHOW=RST
BTN_CH5_SWRST=RST
BTN_CH5_SWRST_SHOW=RST
BTN_CH6_SWRST=RST
BTN_CH6_SWRST_SHOW=RST
BTN_CH78_SWRST=RST
BTN_CH78_SWRST_SHOW=RST
BTN_CH9_SWRST=RST
BTN_CH9_SWRST_SHOW=RST
CHANNEL1=1
CHANNEL10=0
CHANNEL2=1
CHANNEL34=1
CHANNEL5=1
CHANNEL6=1
CHANNEL78=1
CHANNEL9=1
CHANNEL_SELECT=7
CLKout10_freq=0
CLKout1_freq=122.88
CLKout2_freq=0
CLKout3_freq=0
CLKout4_freq=122.88
CLKout5_freq=0
CLKout6_freq=122.88
CLKout7_freq=0
CLKout8_freq=122.88
CLKout9_freq=0
VCOPRESCBOT_freq=983.04
VCOPRESCTOP_freq=983.04
btnApplyToChannel=Apply to selected Channel
lblApplyToChannel=Function is only supported for Singlechannel as Reference
SPI_SCL_EN_INSTAGE=1
SPI_SCS_EN_INSTAGE=1
SPI_SDIO_EN_INSTAGE=1
PLL2_REF_STATCLK_DIV_COPY=0
STATUS0_EN_INSTAGE=0
STATUS0_OUTPUT_DATA=0
STATUS1_EN_INSTAGE=0
STATUS1_OUTPUT_DATA=1
SYNC_EN_INSTAGE=1
SYNC_OUTPUT_DATA=0
CLKINSEL1_EN_INSTAGE=1
BTN_LOAD_DEVICE=Load from Device
BTN_PLL1_BW_APPLY=Apply to Device
BTN_PLL1_FIND_BW=Find Bandwidth
BTN_PLL1_PLOT_CL=Plot Close Loop
BTN_PLL1_PLOT_OL=Plot Open Loop
BTN_SUGGEST_PLL1=Find PLL1 Settings
DEBUG_PR=0
LF_CEXTR=4.7
LF_ERROR_BOX=Error in Inputs, Please check Divider Values
LF_FND_BW=38.9000000000006
LF_FVCXO=122.88
LF_INPUT_F=10
LF_INPUT_MODE=1
LF_INTG=10
LF_NDIV=1536
LF_PFD_F=0.08
LF_PLL_BW=3
LF_PROP=33
LF_RDIV=125
LF_VCXO_GAIN=1
BTN_LOAD_DEVICE_PLL2=Load from Device
BTN_PLL2_BW_APPLY=Apply to Device
BTN_PLL2_FIND_BW=Find Bandwidth
BTN_PLL2_PLOT_CL=Plot Close Loop
BTN_PLL2_PLOT_OL=Plot Open Loop
BTN_SUGGEST_PLL2=Find PLL2 Settings
DEBUG_PR2=.
DEBUG_PR3=0
LF2_CFILT=0
LF2_CPROP=0
LF2_ERROR_BOX=Error in inputs. VCO frequency out of range.Please check your Inputs.
LF2_FND_BW=98
LF2_FTREE=983.04
LF2_FVCO=5898.24
LF2_INPUT_F=122.88
LF2_INPUT_MODE=2
LF2_INTG=0
LF2_NDIV=4
LF2_PFD_F=245.76
LF2_PLL_BW=100
LF2_PRE=3
LF2_PROP=2
LF2_RDIV=20
LF2_RFILT=0
BTN_FREQ_CALC=Find Solution
BTN_PLL_FREQ_GO=Select
FREQ1=122.88
FREQ2=0
FREQ3=122.88
FREQ4=0
FREQ5=0
FREQ6=0
FREQ7=0
FREQ8=0
FREQ_CLKIN=10
FREQ_VCXO=122.88
F_CALC_ERROR=0
PFD1_1=0.08
PFD1_10=0
PFD1_11=0
PFD1_12=0
PFD1_2=0
PFD1_3=0
PFD1_4=0
PFD1_5=0
PFD1_6=0
PFD1_7=0
PFD1_8=0
PFD1_9=0
PFD2_1=245.76
PFD2_10=0
PFD2_11=0
PFD2_12=0
PFD2_2=0
PFD2_3=0
PFD2_4=0
PFD2_5=0
PFD2_6=0
PFD2_7=0
PFD2_8=0
PFD2_9=0
S10DBL=0
S10NDIV1=0
S10NDIV2=0
S10PRE=0
S10RDIV1=0
S10RDIV2=0
S10RDIV2_4=0
S11DBL=0
S11NDIV1=0
S11NDIV2=0
S11PRE=0
S11RDIV1=0
S11RDIV2=0
S12DBL=0
S12NDIV1=0
S12NDIV2=0
S12PRE=0
S12RDIV1=0
S12RDIV2=0
S1DBL=1
S1NDIV1=1536
S1NDIV2=4
S1PRE=6
S1RDIV1=125
S1RDIV2=1
S2DBL=0
S2NDIV1=0
S2NDIV2=0
S2PRE=0
S2RDIV1=0
S2RDIV2=0
S3DBL=0
S3NDIV1=0
S3NDIV2=0
S3PRE=0
S3RDIV1=0
S3RDIV2=0
S4DBL=0
S4NDIV1=0
S4NDIV2=0
S4PRE=0
S4RDIV1=0
S4RDIV1_2_0=0
S4RDIV2=0
S5DBL=0
S5NDIV1=0
S5NDIV2=0
S5PRE=0
S5RDIV1=0
S5RDIV2=0
S6DBL=0
S6NDIV1=0
S6NDIV2=0
S6PRE=0
S6RDIV1=0
S6RDIV2=0
S7DBL=0
S7NDIV1=0
S7NDIV2=0
S7PRE=0
S7RDIV1=0
S7RDIV2=0
S8DBL=0
S8NDIV1=0
S8NDIV2=0
S8PRE=0
S8RDIV1=0
S8RDIV2=0
S9DBL=0
S9NDIV1=0
S9NDIV2=0
S9PRE=0
S9RDIV1=0
S9RDIV2=0
SOL_SEL=0
S_1=1
S_10=10
S_11=11
S_12=12
S_2=2
S_3=3
S_4=4
S_5=5
S_6=6
S_7=7
S_8=8
S_9=9
VCO_1=5898.24
VCO_10=0
VCO_11=0
VCO_12=0
VCO_2=0
VCO_3=0
VCO_4=0
VCO_5=0
VCO_6=0
VCO_7=0
VCO_8=0
VCO_9=0
VCXO_1=122.88
VCXO_10=0
VCXO_11=0
VCXO_12=0
VCXO_2=0
VCXO_3=0
VCXO_4=0
VCXO_5=0
VCXO_6=0
VCXO_7=0
VCXO_8=0
VCXO_9=0

Could you provide the correct configuration file to me?

Hi,

Please see the below updated configuration file for 10MHz input reference at CLKin0 input.

LMK04610_10M_CLKin0_PLL1.tcs

Thanks!

Regards,

Ajeet Pal

Dear Ajeet,

I try the LMK04610_10M_CLKin0_PLL1.tcs configure file, but didn't lock on PLL1.

The Loop filter used a 4.7uF capacitor on PLL1.

Could you provide another to configure the file?

Thank you.

Hi,

Are you using LMK04610EVM or your board to validate the device?

The provided configuration file was tested on default LMK04610EVM. So it should work properly on EVM or board (if there is no change on circuit).

Thanks!

Regards,

Ajeet Pal

Dear Ajeet,

I used self-board to validate. I didn't EVM board on hand.

Thank you.

Hi,

I think, we need to look on schematic of your board. How the inputs and status pins are routing and termination provided?

Can you cross check your schematic with LMK04610EVM details or/and share with here to have a look?

Thanks!

Regards,

Ajeet Pal

Dear Ajeet,

If the device initial to finish then turn off and turn on the 10 MHz clock is entered PLL lock. If the 10MHz reference clock keeps working will be a flash of lock.

How do they modify configure or procedure to stability to work?

Dear Ajeet,

If setting PLL1_LOL_NORESET to Enable has been working for the lock of PLL1.

The phase noise 1KHz to 1MHz is 3.4mDeg, Jitter is 78.08fs. 

If want to get more performance of phase noise.  How to modify configure?

Thanks for your help.

Hi,

With PLL1_LOL_NORSET --> 1, yes, it would work same as you mentioned above turned off and on 10MHz and it locks. i.e. when PLL1_LOL_NORSET  set to 1, it will not reset the PLL when loss of lock.

Have you checked with increasing the 10MHz reference input power?

The above mentioned jitter is at what frequency?

Thanks!

Regards,

Ajeet Pal

Dear Ajeet,

I have been to check input power 1Vp-p.

The jitter mentioned jitter at 122.88MHz.

Thanks,

SJ