WEBENCH® Tools/LMK04616EVM: LMK04616EVM

yeshayahou Baracassa

Part Number: LMK04616EVM

Tool/software: WEBENCH® Design Tools

Hi Ti !

I want to design the PLL2 loop filter with the TICS Pro software .I get phase marging of about 90 degree (in open loop) and can"t decrease it to values of 50-60 degree.How can I decrease the phase marging ?

is the PLL stable with that high value? can you advise ?

I set the following parameters:

over 6 years ago

0 Puneet Sareen over 6 years ago

TI__Expert 8865 points

The PLL in LMK0461x devices is based on SDPLL architecture. The available settings for the intended bandwidth range are very stable settings. For sure, you can make it unstable. If you increase the integral gain settings and reduce the proportional gain settings, the PLL will get less stable.

Here is one example setting:

Please refer to the application note on the SDPLL operation.

Best regards

Puneet

0 yeshayahou Baracassa over 6 years ago in reply to Puneet Sareen

Prodigy 200 points

Hi Puneet
I have already make a design sourcing PLL2 with the local VCXO clock (122.88Mhz) ,PLL1 is bypass .I have get the output clocks frequency as i designed.I try to source PLL2 with CLKin1 (400Mhz @ +3 to 0dbm) using a divider of 2 in the REFCLK path but unfortunatly the PLL was unlock (as indicate by led D1) and there was no any output clocks .I performed the following sequence : reset the EVM then load the design,then click Device Start button .
Can you advise what can be the problem .
Thanks
Yeshayahou

0 Puneet Sareen over 6 years ago in reply to yeshayahou Baracassa

TI__Expert 8865 points

Hi Yeshayahou,
Can you send me your TICSpro configuration file? You can save this by "File-Save" menu option.
Best regards
Puneet

0 Puneet Sareen over 6 years ago in reply to Puneet Sareen

TI__Expert 8865 points

Hello Yeshayahou,

Please make sure that you have selected the correct clock (where you connect your input source) and the corresponding input is enabled.

Also make sure that you select CLKin instead of OSCin from PLL2 page like shown below.

If this does not solve you issue, then please send us the TICSpro config file for review.

Best regards

Puneet

0 yeshayahou Baracassa over 6 years ago in reply to Puneet Sareen

Prodigy 200 points

Hi Puneet

i tryed but ufortunatly still not work.see attach load file ,please change the file extention from txt to tcs .

LMK04616-409_6M__5 - Copy.txt

[SETUP]
ADDRESS=888
CLOCK=8
DATA=4
LE=2
PART=LMK04616
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=126
NAME01=R1
VALUE01=511
NAME02=R2
VALUE02=767
NAME03=R3
VALUE03=768
NAME04=R4
VALUE04=1024
NAME05=R5
VALUE05=1535
NAME06=R6
VALUE06=1791
NAME07=R8
VALUE07=2303
NAME08=R9
VALUE08=2559
NAME09=R10
VALUE09=2815
NAME10=R12
VALUE10=3327
NAME11=R13
VALUE11=3583
NAME12=R16
VALUE12=4318
NAME13=R18
VALUE13=4862
NAME14=R19
VALUE14=5119
NAME15=R20
VALUE15=5184
NAME16=R21
VALUE16=5630
NAME17=R22
VALUE17=5711
NAME18=R23
VALUE18=6031
NAME19=R24
VALUE19=6289
NAME20=R25
VALUE20=6543
NAME21=R26
VALUE21=6796
NAME22=R27
VALUE22=7167
NAME23=R28
VALUE23=7423
NAME24=R29
VALUE24=7679
NAME25=R30
VALUE25=7935
NAME26=R31
VALUE26=8191
NAME27=R32
VALUE27=8447
NAME28=R33
VALUE28=8703
NAME29=R34
VALUE29=8959
NAME30=R35
VALUE30=8980
NAME31=R36
VALUE31=9471
NAME32=R37
VALUE32=9492
NAME33=R38
VALUE33=9983
NAME34=R39
VALUE34=10004
NAME35=R40
VALUE35=10495
NAME36=R41
VALUE36=10516
NAME37=R42
VALUE37=11007
NAME38=R43
VALUE38=11232
NAME39=R44
VALUE39=11311
NAME40=R45
VALUE40=11744
NAME41=R46
VALUE41=12020
NAME42=R47
VALUE42=12156
NAME43=R48
VALUE43=12308
NAME44=R49
VALUE44=12572
NAME45=R50
VALUE45=12800
NAME46=R51
VALUE46=13208
NAME47=R52
VALUE47=13411
NAME48=R53
VALUE48=13720
NAME49=R54
VALUE49=13923
NAME50=R55
VALUE50=14232
NAME51=R56
VALUE51=14435
NAME52=R57
VALUE52=14744
NAME53=R58
VALUE53=14947
NAME54=R59
VALUE54=15256
NAME55=R60
VALUE55=15459
NAME56=R61
VALUE56=15768
NAME57=R62
VALUE57=15971
NAME58=R63
VALUE58=16280
NAME59=R64
VALUE59=16483
NAME60=R65
VALUE60=16792
NAME61=R66
VALUE61=16995
NAME62=R67
VALUE62=17152
NAME63=R68
VALUE63=17448
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VALUE64=17664
NAME65=R70
VALUE65=17940
NAME66=R71
VALUE66=18176
NAME67=R72
VALUE67=18437
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VALUE68=18688
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NAME70=R75
VALUE70=19200
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VALUE74=20224
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NAME180=R186
VALUE180=47871
NAME181=R187
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NAME184=R190
VALUE184=48895
NAME185=R191
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NAME186=R192
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NAME188=R194
VALUE188=49919
NAME189=R195
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NAME190=R196
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NAME194=R200
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NAME196=R202
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NAME197=R203
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NAME198=R204
VALUE198=52479
NAME199=R205
VALUE199=52735
NAME200=R206
VALUE200=52991
NAME201=R207
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NAME202=R208
VALUE202=53503
NAME203=R209
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NAME204=R210
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NAME205=R211
VALUE205=54271
NAME206=R212
VALUE206=54527
NAME207=R213
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NAME208=R214
VALUE208=55039
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VALUE210=55551
NAME211=R217
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NAME212=R218
VALUE212=56063
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NAME214=R220
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NAME215=R221
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NAME216=R222
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VALUE218=57599
NAME219=R225
VALUE219=57855
NAME220=R226
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NAME222=R228
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NAME223=R229
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NAME224=R230
VALUE224=59135
NAME225=R231
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NAME226=R232
VALUE226=59647
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NAME230=R236
VALUE230=60671
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NAME232=R238
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NAME293=R300
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NAME295=R302
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NAME300=R307
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[FLEX]
FLOW_MODE_BYP1=Bypass 1
FLOW_MODE_BYP2A=Bypass 2A
FLOW_MODE_BYP2B=Bypass 2B
FLOW_MODE_CPSL2O=Single Loop PLL2
FLOW_MODE_CPSL2P=Single Loop PLL2
FLOW_MODE_OPSL2O=Single Loop PLL2
FLOW_MODE_OPSL2P=Single Loop PLL2
FLOW_MODE_PDLO=Dual Loop
FLOW_MODE_PDLP=Dual Loop
FLOW_MODE_PSL1O=Single Loop PLL1
FLOW_MODE_PSL1P=Single Loop PLL1
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=1.6.7.0, 04-Jan-18 INI:2017-03-01 PY:20170517
TICS_VERSION_NOTE=File from an earlier device profile loaded. Would like like to update the TCS file?
EVM_CLKin0_FREQ=1
EVM_CLKin0_SE=1
EVM_CLKin1_FREQ=409.6
EVM_CLKin1_SE=1
EVM_CLKin2_FREQ=1
EVM_CLKin2_SE=0
EVM_CLKin3_FREQ=1
EVM_CLKin3_SE=1
EVM_CLKout0_FREQ=51.2
EVM_CLKout0_Info=HSDS
EVM_CLKout10_FREQ=25.6
EVM_CLKout10_Info=HSDS
EVM_CLKout11_FREQ=25.6
EVM_CLKout11_Info=HSDS
EVM_CLKout12_FREQ=12.8
EVM_CLKout12_Info=HSDS
EVM_CLKout13_FREQ=12.8
EVM_CLKout13_Info=HSDS
EVM_CLKout14_FREQ=12.8
EVM_CLKout14_Info=HSDS
EVM_CLKout15_FREQ=12.8
EVM_CLKout15_Info=HSDS
EVM_CLKout1_FREQ=51.2
EVM_CLKout1_Info=HSDS
EVM_CLKout2_FREQ=102.4
EVM_CLKout2_Info=HSDS
EVM_CLKout3_FREQ=102.4
EVM_CLKout3_Info=HSDS
EVM_CLKout4_FREQ=409.6
EVM_CLKout4_Info=HSDS
EVM_CLKout5_FREQ=409.6
EVM_CLKout5_Info=HSDS
EVM_CLKout6_FREQ=102.4
EVM_CLKout6_Info=HSDS
EVM_CLKout7_FREQ=102.4
EVM_CLKout7_Info=HSDS
EVM_CLKout8_FREQ=51.2
EVM_CLKout8_Info=HSDS
EVM_CLKout9_FREQ=51.2
EVM_CLKout9_Info=HSDS
EVM_DEVICE_TOPMARK=LMK04616
EVM_OSCin_FREQ=409.6
EVM_OSCin_SE=1
EVM_OSCout_Info=HSDS
EVM_OSCout_freq=409.6
BTN_GET_CLKMUX=BTN_GET_CLKMUX
BTN_GET_STORAGE=Read Storagecell
BTN_MAIL_LF1=0
BTN_PLL1_NDIV_SWRST=RST
BTN_PLL1_RDIV_SWRST=RST
BTN_PLL1_SWRST=RST
CLKIN0_FREQ=1
CLKIN1_FREQ=409.6
CLKIN2_FREQ=1
CLKIN3_FREQ=1
INPUT_CLKIN0_PLL1_RDIV=32771
INPUT_CLKIN1_PLL1_RDIV=32771
INPUT_CLKIN2_PLL1_RDIV=32771
INPUT_CLKIN3_PLL1_RDIV=32771
INPUT_PLL1_NDIV=32771
PFDCLKIN0_freq=3.05147844130481E-05
PFDCLKIN1_freq=0.0124988556955845
PFDCLKIN2_freq=3.05147844130481E-05
PFDCLKIN3_freq=3.05147844130481E-05
PFDCLKIN_freq=0.0124988556955845
PLL1_EN_TIE_LOWCNT=1
PLL1_EN_TIE_LOWCNT_WARNING=Divider register values different. Please refer datasheet
PLL1_STORAGE_CELL_7t0=0
VCXOPLL1_FREQ=409.6
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=20.97152
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=409.6
OUTCH_CH7_freq=0
OUTCH_CH8_freq=0
PFDPLL2_FREQ=204.8
PLL2_CLKin_freq=409.6
PLL2_DBL_COMBOBOX=4
PLL2_STRG_INITVAL_PRESET=4
VCOPLL2_FREQ=6144
VCOPRESCPLL2_freq=2048
VCXOPLL2_FREQ=409.6
BTN_CH01_SWRST=RST
BTN_CH01_SWRST_SHOW=RST
BTN_CH1011_SWRST=RST
BTN_CH1011_SWRST_SHOW=RST
BTN_CH1213_SWRST=RST
BTN_CH1213_SWRST_SHOW=RST
BTN_CH1415_SWRST=RST
BTN_CH1415_SWRST_SHOW=RST
BTN_CH23_SWRST=RST
BTN_CH23_SWRST_SHOW=RST
BTN_CH45_SWRST=RST
BTN_CH45_SWRST_SHOW=RST
BTN_CH67_SWRST=RST
BTN_CH67_SWRST_SHOW=RST
BTN_CH89_SWRST=RST
BTN_CH89_SWRST_SHOW=RST
CHANNEL01=1
CHANNEL1011=1
CHANNEL1213=1
CHANNEL1415=1
CHANNEL23=1
CHANNEL45=0
CHANNEL67=1
CHANNEL89=1
CHANNEL_SELECT=2
CLKout0_FREQ=51.2
CLKout10_FREQ=25.6
CLKout11_FREQ=25.6
CLKout12_FREQ=12.8
CLKout13_FREQ=12.8
CLKout14_FREQ=12.8
CLKout15_FREQ=12.8
CLKout1_FREQ=51.2
CLKout2_FREQ=102.4
CLKout3_FREQ=102.4
CLKout4_FREQ=409.6
CLKout5_FREQ=409.6
CLKout6_FREQ=102.4
CLKout7_FREQ=102.4
CLKout8_FREQ=51.2
CLKout9_FREQ=51.2
VCOPRESCBOT_freq=2048
VCOPRESCTOP_freq=2048
btnApplyToChannel=Apply to\n selected\n Channel
SPI_SCL_EN_INSTAGE=2
SPI_SCS_EN_INSTAGE=2
SPI_SDIO_EN_INSTAGE=2
PLL2_REF_STATCLK_DIV_COPY=0
STATUS0_EN_INSTAGE=1
STATUS0_OUTPUT_DATA=1
STATUS1_EN_INSTAGE=1
STATUS1_OUTPUT_DATA=0
SYNC_EN_INSTAGE=2
SYNC_OUTPUT_DATA=0
CLKINSEL1_EN_INSTAGE=2
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=0
LF_ERROR_BOX=0
LF_FND_BW=0
LF_FVCXO=122.88
LF_INPUT_F=122.88
LF_INPUT_MODE=0
LF_INTG=0
LF_NDIV=100
LF_PFD_F=0
LF_PLL_BW=20
LF_PROP=20
LF_RDIV=100
LF_VCXO_GAIN=3
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=430
LF2_FTREE=2048
LF2_FVCO=6144
LF2_INPUT_F=409.6
LF2_INPUT_MODE=3
LF2_INTG=31
LF2_NDIV=10
LF2_PFD_F=204.8
LF2_PLL_BW=500
LF2_PRE=0
LF2_PROP=7
LF2_RDIV=2
LF2_RFILT=0
BTN_FREQ_CALC=Find Solution
BTN_PLL_FREQ_GO=Select
FREQ1=122.88
FREQ2=122.88
FREQ3=0
FREQ4=0
FREQ5=0
FREQ6=0
FREQ7=0
FREQ8=0
FREQ_CLKIN=122.88
FREQ_VCXO=122.88
F_CALC_ERROR=0
PFD1_1=0
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=0
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
S10NDIV1=0
S10NDIV2=0
S10PRE=0
S10RDIV1=0
S10RDIV2=0
S10DBL=0
S10RDIV2_4=0
S11NDIV1=0
S11NDIV2=0
S11PRE=0
S11RDIV1=0
S11RDIV2=0
S11DBL=0
S12DBL=0
S12NDIV1=0
S12NDIV2=0
S12PRE=0
S12RDIV1=0
S12RDIV2=0
S1DBL=0
S1NDIV1=0
S1NDIV2=0
S1PRE=0
S1RDIV1=0
S1RDIV2=0
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=0
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=0
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
OSCIN_BUF_LOS_EN=0
OSCIN_BUF_REF_EN=0
OSCIN_BUF_TO_OSCOUT_EN=0
OSCIN_OSCINSTAGE_EN=1
OSCIN_PD_LDO=1
OSCIN_SE_MODE=1

0 Puneet Sareen over 6 years ago in reply to yeshayahou Baracassa

TI__Expert 8865 points

I fixed your configuration. This should work.

Best regards

Puneet

LMK04616_409p6_PLL2only.zip

0 yeshayahou Baracassa over 6 years ago in reply to Puneet Sareen

Prodigy 200 points

Hi puneet
Thanks it's works.
I think that there is a bug in the GUI ,there is no a right frequency output from OSCOUT till toggling the OSCOUT_DIV select button and changing the the divide value.
Thanks
Yeshayahou

0 Puneet Sareen over 6 years ago in reply to yeshayahou Baracassa

TI__Expert 8865 points

Hi Yeshayahou,
Do you mean that you program the OSCout divider at device configuration and when you load the registers, you dont see a correct frequency unless you toggle the OSCout_DIV select button and change the divider values again?
Once you change the divider values, you should also do OSCout divider reset.
Best regards
Puneet

0 yeshayahou Baracassa over 6 years ago in reply to Puneet Sareen

Prodigy 200 points

Hi Puneet

Yes,when i load the TCS program file with the OSCout divider option drived from PLL2 the was no any output .I change the divider by de-select and re-select it and then there was a signal output with correct freqency.

THANKS

Yeshayahou

0 Puneet Sareen over 6 years ago in reply to yeshayahou Baracassa

TI__Expert 8865 points

Hi Yeshayahou,
I check now in the Lab and confirm that there is a bug in the software and I will fix that in the next release. For the time being, you can use the OSCOUT_SWRST button.
Best regards
Puneet

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WEBENCH® Tools/LMK04616EVM: LMK04616EVM