Other Parts Discussed in Thread: LMK04832
Hello,
I am having trouble getting the desired 160 MHz clock output from the LMK04832EVAL board on Clk4 and Clk6.
I am using a LMK04832EVAL card that has been modified to allow an external 160MHz oscillator at the OSCin SMA connector to be used instead of the onboard 122.88MHz Oscillator. I have removed the AC coupling capacitors from the 122.88 oscillator and connected one of them to the external path for this. I believe this oscillator is working and the connection to the LMK04832 is good, I am able to measure an expected 320MHz clock on CLK 0, CLK1, and CLK3 but cannot get a 160MHz clock to show on CLK4 or CLK6.
I have configured the LMK for a single loop through PLL2 and on CLK4 there is a ~620MHz instead of 160MHz and the divider for that CLK does not change the frequency at all. CLK6 shows a ~380MHz clock and the divider for that CLK does not change the frequency either. I have tried to adjust these dividers for on multiple eval cards and have not been able to change the outputs. Bypassing the divider does send out the expected 2560MHz.
Would you please take a look at my settings and let me know what I'm doing wrong?
Lee Fraser
[SETUP]
ADDRESS=888
CLOCK=8
DATA=4
LE=2
PART=LMK04832
IFACE=SPI
ADDRESS_I2C=0x0
[PINS]
PINNAME00=SYNC
LOCATION00=7
PINVALUE00=False
PINNAME01=TEST (CLKin_SEL1)
LOCATION01=3
PINVALUE01=False
PINNAME02=DIGinVth_SEL
LOCATION02=1
PINVALUE02=True
PINNAME03=CLKin_SEL0
LOCATION03=0
PINVALUE03=False
[MODES]
NAME00=R0 (INIT)
VALUE00=144
NAME01=R0
VALUE01=16
NAME02=R2
VALUE02=512
NAME03=R3
VALUE03=774
NAME04=R4
VALUE04=1233
NAME05=R5
VALUE05=1379
NAME06=R6
VALUE06=1616
NAME07=R12
VALUE07=3153
NAME08=R13
VALUE08=3332
NAME09=R256
VALUE09=65544
NAME10=R257
VALUE10=65802
NAME11=R258
VALUE11=66064
NAME12=R259
VALUE12=66368
NAME13=R260
VALUE13=66608
NAME14=R261
VALUE14=66816
NAME15=R262
VALUE15=67073
NAME16=R263
VALUE16=67345
NAME17=R264
VALUE17=67592
NAME18=R265
VALUE18=67850
NAME19=R266
VALUE19=68112
NAME20=R267
VALUE20=68416
NAME21=R268
VALUE21=68624
NAME22=R269
VALUE22=68864
NAME23=R270
VALUE23=69121
NAME24=R271
VALUE24=69393
NAME25=R272
VALUE25=69648
NAME26=R273
VALUE26=69898
NAME27=R274
VALUE27=70144
NAME28=R275
VALUE28=70464
NAME29=R276
VALUE29=70672
NAME30=R277
VALUE30=70912
NAME31=R278
VALUE31=71169
NAME32=R279
VALUE32=71441
NAME33=R280
VALUE33=71696
NAME34=R281
VALUE34=71946
NAME35=R282
VALUE35=72192
NAME36=R283
VALUE36=72512
NAME37=R284
VALUE37=72720
NAME38=R285
VALUE38=72960
NAME39=R286
VALUE39=73217
NAME40=R287
VALUE40=73489
NAME41=R288
VALUE41=73736
NAME42=R289
VALUE42=73994
NAME43=R290
VALUE43=74368
NAME44=R291
VALUE44=74560
NAME45=R292
VALUE45=74768
NAME46=R293
VALUE46=75008
NAME47=R294
VALUE47=75265
NAME48=R295
VALUE48=75537
NAME49=R296
VALUE49=75784
NAME50=R297
VALUE50=76042
NAME51=R298
VALUE51=76416
NAME52=R299
VALUE52=76608
NAME53=R300
VALUE53=76816
NAME54=R301
VALUE54=77056
NAME55=R302
VALUE55=77313
NAME56=R303
VALUE56=77585
NAME57=R304
VALUE57=77856
NAME58=R305
VALUE58=78090
NAME59=R306
VALUE59=78352
NAME60=R307
VALUE60=78656
NAME61=R308
VALUE61=78864
NAME62=R309
VALUE62=79104
NAME63=R310
VALUE63=79361
NAME64=R311
VALUE64=79633
NAME65=R312
VALUE65=79877
NAME66=R313
VALUE66=80128
NAME67=R314
VALUE67=80384
NAME68=R315
VALUE68=80676
NAME69=R316
VALUE69=80896
NAME70=R317
VALUE70=81160
NAME71=R318
VALUE71=81411
NAME72=R319
VALUE72=81664
NAME73=R320
VALUE73=81935
NAME74=R321
VALUE74=82176
NAME75=R322
VALUE75=82432
NAME76=R323
VALUE76=82705
NAME77=R324
VALUE77=83151
NAME78=R325
VALUE78=83200
NAME79=R326
VALUE79=83456
NAME80=R327
VALUE80=83714
NAME81=R328
VALUE81=83970
NAME82=R329
VALUE82=84290
NAME83=R330
VALUE83=84483
NAME84=R331
VALUE84=84742
NAME85=R332
VALUE85=84992
NAME86=R333
VALUE86=85248
NAME87=R334
VALUE87=85696
NAME88=R335
VALUE88=85887
NAME89=R336
VALUE89=86017
NAME90=R337
VALUE90=86274
NAME91=R338
VALUE91=86528
NAME92=R339
VALUE92=86784
NAME93=R340
VALUE93=87050
NAME94=R341
VALUE94=87296
NAME95=R342
VALUE95=87672
NAME96=R343
VALUE96=87808
NAME97=R344
VALUE97=88214
NAME98=R345
VALUE98=88320
NAME99=R346
VALUE99=88586
NAME100=R347
VALUE100=89055
NAME101=R348
VALUE101=89120
NAME102=R349
VALUE102=89344
NAME103=R350
VALUE103=89630
NAME104=R351
VALUE104=89867
NAME105=R352
VALUE105=90112
NAME106=R353
VALUE106=90370
NAME107=R354
VALUE107=90700
NAME108=R355
VALUE108=90880
NAME109=R356
VALUE109=91136
NAME110=R357
VALUE110=91393
NAME111=R361
VALUE111=92504
NAME112=R362
VALUE112=92704
NAME113=R363
VALUE113=92928
NAME114=R364
VALUE114=93184
NAME115=R365
VALUE115=93440
NAME116=R366
VALUE116=93715
NAME117=R371
VALUE117=94992
NAME118=R375
VALUE118=96000
NAME119=R386
VALUE119=98816
NAME120=R387
VALUE120=99072
NAME121=R358
VALUE121=91648
NAME122=R359
VALUE122=91904
NAME123=R360
VALUE123=92176
NAME124=R1365
VALUE124=349440
[FLEX]
bSetFeedback_CLKin1=CLKin1 (External)
bSetFeedback_CLKout6=CLKout6
bSetFeedback_CLKout8=CLKout8
bSetFeedback_SYSREFDIV=SYSREF divider
bSetJESD204B_Continuous=Continuous
bSetJESD204B_NoJESD204B=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_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
DAC_TRIP_HIGH_V= = 3.25 V
DAC_TRIP_LOW_V= = 0.05 V
sDAC_UPDATE_RATE=~130.0 ms
sHOLDOVER_MODE=Holdover enabled.\nWarning: Set LOS_EN = 1 to allow LOS exit\nto operate properly.
sHOLDOVER_PPM_EXIT=~1343.8 ppm
CLKin0_FREQ=160
CLKin1_FREQ=122.88
CLKin2_FREQ=153.6
CLKin_SEL_AUTOPINSMODE=0
clock_input_select_status=Manual Clock Select Mode
CLKDIST_FREQ=2560
CLKinX_FREQ=160
CLKin_SEL_AUTOPINSMODE=0
EXT_VCXO_FREQ=160
FB_MUX_FREQ=1
FB_MUX_FREQ_MHz=MHz
OSC_FREQ=160
OSCin_SOURCE=0
PLL1_PD_FREQ=16
PLL1_R=10
PLL2_PD_FREQ=80
PLL_FBMUX_WARNING_TEXT=0
PLL_OUTPUT_WARNING_TEXT=0
PLL_WARNING_TEXT=0
WARNING_TEXT_PLL1=
WARNING_TEXT_PLL2=
clock_input_select_status2=Manual Clock Select Mode
CLKDIST_FREQ=2560
SYSREF_FREQ=71.1111111111
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_Ignore=None
bSetJESD204B_RX_Reclocked=Re-Clocked
bSetJESD204B_RX_SYNCpin=SYNC Pin
bSetJESD204B_SYSREFREQ=SYSREF Request
bSetSYNC_Normal=Normal
stSYSREF_CLR_WARNING=
CLKDIST_FREQ=2560
CLKout0_FREQ=320
CLKout10_FREQ=320
CLKout11_FREQ=320
CLKout11_STEXT=0
CLKout12_FREQ=80
CLKout13_FREQ=80
CLKout13_STEXT=0
CLKout1_FREQ=71.1111111111
CLKout1_STEXT=0
CLKout2_FREQ=320
CLKout3_FREQ=320
CLKout3_STEXT=0
CLKout4_FREQ=160
CLKout5_FREQ=160
CLKout5_STEXT=0
CLKout6_FREQ=160
CLKout7_FREQ=160
CLKout7_STEXT=0
CLKout8_FREQ=320
CLKout9_FREQ=320
CLKout9_STEXT=0
OSCout_FREQ=160
SYSREF_FREQ=71.1111111111
bSendDDLYd=Send
Additional_Icc_FMT=0
HW0_FMT=0
HW0_Hide_FMT=Incorrect output termination
HW10_FMT=0
HW10_Hide_FMT=Incorrect output termination
HW11_FMT=0
HW11_Hide_FMT=Incorrect output termination
HW12_FMT=0
HW12_Hide_FMT=Incorrect output termination
HW13_FMT=0
HW13_Hide_FMT=Incorrect output termination
HW1_FMT=0
HW1_Hide_FMT=Incorrect output termination
HW2_FMT=0
HW2_Hide_FMT=Incorrect output termination
HW3_FMT=0
HW3_Hide_FMT=Incorrect output termination
HW4_FMT=0
HW4_Hide_FMT=Incorrect output termination
HW5_FMT=0
HW5_Hide_FMT=Incorrect output termination
HW6_FMT=0
HW6_Hide_FMT=Incorrect output termination
HW7_FMT=0
HW7_Hide_FMT=Incorrect output termination
HW8_FMT=0
HW8_Hide_FMT=Incorrect output termination
HW9_FMT=0
HW9_Hide_FMT=Incorrect output termination
OSCoutHW_FMT=0
OSCoutHW_Hide_FMT=Incorrect output termination
PLL1_LED_FMT=0
PLL2_LED_FMT=0
VCXO_FMT=0
bButtonCC2=Calculate Current
lb_Additional_Icc=0
lb_External_Power=1
lb_IC_Power=1
lb_PLL1_LED=4.3
lb_PLL2_LED=4.3
lb_Total_Power=1
lb_VCXO=19
lb_Vcc_1=1
lb_Vcc_10=1
lb_Vcc_11=1
lb_Vcc_12=1
lb_Vcc_2=1
lb_Vcc_3=1
lb_Vcc_4=1
lb_Vcc_5=1
lb_Vcc_6=1
lb_Vcc_7=1
lb_Vcc_8=1
lb_Vcc_9=1
lb_worst_freq_combos=1
