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Original question:

LMK04828BEVM: Clock frequency is different from software calculations?

LMK04828BEVM: I'm connecting the LMK04828BEVM to the DAC3484EVM...

Ron Breding
Intellectual 585 points
Part Number: LMK04828BEVM
Other Parts Discussed in Thread: LMK04828, TRF3705EVM, TICSPRO-SW, CODELOADER

I can get the desired output clock frequencies (i.e. 256MHz LVDS and the DACCLK ranging from 64MHz to 512MHz, 2x to 16x interpolation respectively) from the on-board 19.2MHz VXCO.  Sooooo...I need to now input this frequency from the LMK04828BEVM whose input is a 10MHz reference clock.  So I'm trying to generate a 19.2MHz LVPECL and 512MHz LVDS from a 10MHz input clock using the LMK04828BEVM.  I'm having trouble setting this up using the Clock Design Tool as it defaults to the LMK04808B and won't select the LMK04828B.  I can go in and select the LMK048028B using manual setup.  The manual entyr method doesn't work for this device.  Is there wizard tool that allows me to set up the LMK04828B for a 10MHz input generating both 19.2MHz and 512MHz outputs?

  • 0
    TI__Mastermind 28550 points

    Hello Ron,

    Sorry for your trouble.

    Two issues are going on here.

    1) The LMK0482x profiles for the CDT does not support the SYSREF divider.  So the max divide is 32 which doesn't allow it to find 19.2 MHz.

        - A workaround is to put a multiple of this frequency in, and then once in the solution adjust the divider.  So for example if we use 19.2 * 8 = 153.6 MHz.  That will solve this issue.  Or you can just solve with 512 MHz and then type in 19.2 MHz into an output and the divider will be calculated.

    However... the other issue is that...

    2) The database file for the LMK04828 has an incorrect maximum frequency for VCO1.  I've attached a file you may overwrite in the {installed directory}\database to correct this issue.  Typically this will be: C:\Program Files (x86)\Texas Instruments\NCDT\database

    --

    I'm hoping to be able to add a frequency planning tool inside TICS Pro LMK0482x which will help simplify the job of setting it up for your use case.

    73,

    Timothy

    db_VCO.txt 
     174
Texas Instruments
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LMK04031B
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http://www.ti.com/product/LMK03001
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3
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Texas Instruments
LMK04102
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http://www.ti.com/product/LMK03001
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3
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Texas Instruments
LMK04110
None
http://www.ti.com/product/LMK03001
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Texas Instruments
LMK04111
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Texas Instruments
LMK04133
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Texas Instruments
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http://www.ti.com/LMK03806
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http://www.ti.com/LMK04800
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None
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LMK04816B
None
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LMK04906B
None
http://www.ti.com/LMK04800
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LMK04828B_VCO1
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http://www.ti.com/LMK04828
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Texas Instruments
LMX2531LQ1146E
None
http://www.ti.com/product/LMX2531
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http://www.ti.com/product/LMX2531
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Texas Instruments
LMX2531LQ1415E
None
http://www.ti.com/product/LMX2531
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RF
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Texas Instruments
LMX2531LQ1515E
None
http://www.ti.com/product/LMX2531
No_Description
3
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VCOINT
0
None
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RF
2.5
1470
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0
5.5
3
2
1
1450
0
4
1515
0
5.5
1580
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1515
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Texas Instruments
LMX2531LQ1500E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
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1.5
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RF
4.5
1499
1510
0
5
3
2
1
1499
0
5
1504.5
0
5
1510
0
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1504.5
3
10000
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-122
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Texas Instruments
LMX2531LQ1570E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
4.5
1530
1636
0
5.5
3
2
1
1530
-0.7
4
1583
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1636
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1583
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10000
-93
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Texas Instruments
LMX2531LQ1650E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
4.5
1590
1700
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3
2
1
1590
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1645
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1645
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-93
100000
-118
40000000
-163.5
Texas Instruments
LMX2531LQ1700E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
1662
1770
0
8
3
2
1
1662
-1.3
6
1716
0
8
1770
2.10.9
10
1716
3
10000
-92
100000
-117
40000000
-162.5
Texas Instruments
LMX2531LQ1742
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
1760
1866
0
5.5
3
2
1
1760
-0.8
4
1813
0
5.5
1866
1.3
7
1813
3
10000
-92
100000
-117
40000000
-162.5
Texas Instruments
LMX2531LQ1778E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
1726
1840
0
8
3
2
1
1726
-1
6
1783
0
8
1840
1.4
10
1783
3
10000
-92
100000
-117
40000000
-162.5
Texas Instruments
LMX2531LQ1910E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
1834
2028
0
11
3
2
1
1834
-1.6
8
1931
0
11
2028
1.4
14
1931
3
10000
-89
100000
-115
40000000
-162
Texas Instruments
LMX2531LQ2080E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
1904
2274
0
14.5
3
2
1
1904
-2.2
9
2089
0
14.5
2274
2.3
20
2089
3
10000
-87
100000
-113
40000000
-162.2
Texas Instruments
LMX2531LQ2265E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3.5
2178
2400
0
13
3
2
1
2178
-1.6
10
2289
0
13
2400
1.4
16
2289
3
10000
-88
100000
-113
40000000
-161
Texas Instruments
LMX2531LQ2570E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
2336
2790
0
16.5
3
2
1
2336
-2.2
10
2563
0
16.5
2790
2.4
23
2563
3
10000
-86
100000
-112
40000000
-160
Texas Instruments
LMX2531LQ2820E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
2336
2925
0
20
3
2
1
2710
-2.2
12
2817.5
0
20
2925
2.4
28
2817.5
3
10000
-84
100000
-111
40000000
-160
Texas Instruments
LMX2531LQ3010E
None
http://www.ti.com/product/LMX2531
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
2336
3132
0
21
3
2
1
2910
-2.2
13
3021
0
21
3132
2.4
29
3021
3
10000
-83
100000
-110
40000000
-160
Texas Instruments
LMX2541SQ2060E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
3.5
1990
2240
0
13
3
2
1
1990
0
13
1990
0
13
2240
2.3
23
1990
3
10000
-89.7
100000
-113.7
40000000
-162.4
Texas Instruments
LMX2541SQ2380E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
2.8
2200
2530
0
16
3
2
1
2200
0
16
2200
0
16
2530
3.6
30
2200
3
10000
-87.9
100000
-112.7
40000000
-161.1
Texas Instruments
LMX2541SQ2690E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
1.6
2490
2865
0
17
3
2
1
2490
0
17
2490
0
17
2865
3.4
32
2490
3
10000
-86.9
100000
-111.8
40000000
-160.5
Texas Instruments
LMX2541SQ3030E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
1.2
2810
3230
0
20
3
2
1
2810
0
20
2810
0
20
3230
2.8
37
2810
3
10000
-86.1
100000
-110.5
40000000
-158.3
Texas Instruments
LMX2541SQ3320E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
0.2
3130
3600
0
21
3
2
1
3130
0
21
3130
0
21
3600
2.1
37
3130
3
10000
-84.1
100000
-109.1
40000000
-157.4
Texas Instruments
LMX2541SQ3740E
SQA36A
http://www.ti.com/product/LMX2541
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
-0.3
3480
4000
0
24
3
2
1
3480
0
24
3480
0
24
4000
1.8
42
3480
3
10000
-83.9
100000
-108.3
40000000
-157.4
Texas Instruments
LMX2541_Ext_VCO
NA
NA
Custom
0
0
1
VCO
0
None
1
1
RF
-0.3
0
10000
0
24
3
2
1
3480
0
24
3480
0
24
4000
1.8
42
1310
3
10000
-83.9
100000
-108.3
40000000
-157.4
Texas Instruments
LMX2581
SQA32A
http://www.ti.com/product/LMX2581
No_Description
3.15
3.45
1
VCOINT
0
None
1.5
1.5
RF
-0.3
1880
3760
0
30
8
2
1
1880
-1.2
12
2139.9
-0.150000000000006
24
2140
-1.7
15
2649.9
1.25
30
2650
-4.99999999999972E-02
20
3199.9
2.95
37
3200
2.8
21
3760
5.95
37
2650
3
10000
-84.1
1000000
-136.8
40000000
-157
Texas Instruments
LMX2581_Ext_VCO
NA
http://www.ti.com/product/LMX2581
No_Description
3.15
3.45
1
VCO
0
None
1
1
RF
None
0
10000
0
10
3
2
1
0
-1
10
1
0
10
10000
0
10
1310
3
10000
-83.9
100000
-108.3
40000000
-157.4
Texas Instruments
CDCM61004
None
http://www.ti.com/product/CDCM61004
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1750
2050
0
40
3
2
1
1750
-1
40
1900
0
40
2050
1
40
1900
2
10000
-70
5000000
-140
Texas Instruments
CDCM61002
None
http://www.ti.com/product/CDCM61002
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1750
2050
0
40
3
2
1
1750
-1
40
1900
0
40
2050
1
40
1900
2
10000
-70
5000000
-140
Texas Instruments
CDCM61001
None
http://www.ti.com/product/CDCM61001
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1750
2050
0
40
3
2
1
1750
-1
40
1900
0
40
2050
1
40
1900
2
10000
-70
5000000
-140
Texas Instruments
CDCM9102
None
http://www.ti.com/product/CDCM9102
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1800
1800
0
40
1
2
0
1800
0
40
1800
2
10000
-70
5000000
-140
Texas Instruments
CDCM6208V1
None
http://www.ti.com/product/CDCM6208
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
2390
2550
0
185
3
2
1
2390
-1
178
2500
0
185
2550
1
213
2500
2
10000
-74.4350487145401
100000
-100.43504871454
Texas Instruments
CDCM6208V2
None
http://www.ti.com/product/CDCM6208
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
2940
3130
0
250
3
2
1
2940
-1
236
3000
0
250
3130
1
283
2949.12
2
10000
-73
100000
-99
Texas Instruments
CDCE62005
None
http://www.ti.com/product/CDCE62005
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1750
2356
0
50
3
2
1
1750
-1
40
2050
0
50
2356
1
60
2000
2
10000
-70
5000000
-140
Texas Instruments
CDCE62002
None
http://www.ti.com/product/CDCE62002
No_Description
3
3
1
VCOINT
0
None
1.5
1.5
RF
3
1750
2356
0
50
3
2
1
1750
-1
40
2050
0
50
2356
1
60
2000
2
10000
-70
5000000
-140
Hittite
HMC431LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
2
5500
6100
0
10
3
2
1
5500
-1
10
5800
0
10
6100
0
100
5800
0
Hittite
HMC358MS8G
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
11
5800
6800
0
10
3
2
1
5800
-1
10
6300
0
10
6800
0
100
6300
0
Hittite
HMC385LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4.5
2250
2500
0
10
3
2
1
2250
-1
10
2375
0
10
2500
0
100
2375
0
Hittite
HMC386LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
5
2600
2800
0
10
3
2
1
2600
-1
10
2700
0
10
2800
0
100
2700
0
Hittite
HMC388LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4.9
3150
3400
0
10
3
2
1
3150
-1
10
3275
0
10
3400
0
100
3275
0
Hittite
HMC389LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4.7
3350
3550
0
10
3
2
1
3350
-1
10
3450
0
10
3550
0
100
3450
0
Hittite
HMC390LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4.7
3550
3900
0
10
3
2
1
3550
-1
10
3725
0
10
3900
0
100
3725
0
Hittite
HMC391LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
5
3900
4450
0
10
3
2
1
3900
-1
10
4175
0
10
4450
0
100
4175
0
Hittite
HMC416LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4.5
2750
3000
0
10
3
2
1
2750
-1
10
2875
0
10
3000
0
100
2875
0
Hittite
HMC429LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
4
4450
5000
0
10
3
2
1
4450
-1
10
4725
0
10
5000
0
100
4725
0
Hittite
HMC430LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
0
10
RF
2
5000
5500
0
10
3
2
1
5000
-1
10
5250
0
10
5500
0
100
5250
0
Hittite
HMC505LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
1
11
RF
11
6800
7400
0
10
3
2
1
6800
-1
10
7100
0
10
7400
0
100
7100
0
Hittite
HMC506LP4
None
www.hittite.com
No_Description
3
3
1
VCO
0
None
1
11
RF
14
7800
8700
0
10
3
2
1
7800
-1
10
8250
0
10
8700
0
100
8250
0
Minicircuits
ROS-100
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
0.5
17
RF
8.3
50
100
0
10
3
2
1
50
-1
10
75
0
10
100
0
10
75
2
100000
-125
1000000
-145
Minicircuits
ROS-1200W
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
0.5
18
RF
10
312
1200
0
10
3
2
1
312
-1
10
756
0
10
1200
0
10
756
2
100000
-119
1000000
-139
Minicircuits
ROS-150
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
18
RF
9.5
75
150
0
10
3
2
1
75
-1
10
112.5
0
10
150
0
10
112.5
2
100000
-127
1000000
-144
Minicircuits
ROS-1600W
None
www.minicircuits.com
No_Description
11.5
11.5
1
VCO
0
None
0.5
24
RF
9
800
1600
0
10
3
2
1
800
-1
10
1200
0
10
1600
0
10
1200
2
100000
-122
1000000
-143
Minicircuits
ROS-1700W
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
24
RF
8
770
1700
0
10
3
2
1
770
-1
10
1235
0
10
1700
0
10
1235
2
100000
-121
1000000
-140
Minicircuits
ROS-200
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
17
RF
10
100
200
0
10
3
2
1
100
-1
10
150
0
10
200
0
10
150
2
100000
-125
1000000
-145
Minicircuits
ROS-2150VW
None
www.minicircuits.com
No_Description
5
5
1
VCO
0
None
0.5
25
RF
4
970
2150
0
10
3
2
1
970
-1
10
1560
0
10
2150
0
10
1560
2
100000
-118
1000000
-138
Minicircuits
ROS-2500
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
0.5
14
RF
6.5
1600
2500
0
10
3
2
1
1600
-1
10
2050
0
10
2500
0
10
2050
2
100000
-113
1000000
-133
Minicircuits
ROS-300
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
16
RF
9
150
280
0
10
3
2
1
150
-1
10
215
0
10
280
0
10
215
2
100000
-122
1000000
-142
Minicircuits
ROS-400
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
0.5
17
RF
9.5
200
380
0
10
3
2
1
200
-1
10
290
0
10
380
0
10
290
2
100000
-120
1000000
-140
Minicircuits
ROS-535
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
17
RF
6
300
525
0
10
3
2
1
300
-1
10
412.5
0
10
525
0
10
412.5
2
100000
-118
1000000
-138
Minicircuits
ROS-765
None
www.minicircuits.com
No_Description
12
12
1
VCO
0
None
1
16
RF
6
485
765
0
10
3
2
1
485
-1
10
625
0
10
765
0
10
625
2
100000
-115
1000000
-135
Sirenza
VCO190-1050T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
1030
1070
47
10
3
2
1
1030
-1
10
1050
0
10
1070
0
10
1050
2
100000
-131
100000
-131
Sirenza
VCO190-1100T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4.5
RF
None
1085
1115
100
10
3
2
1
1085
-1
10
1100
0
10
1115
0
10
1100
2
100000
-131
100000
-131
Sirenza
VCO190-1198T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
1178
1218
47
10
3
2
1
1178
-1
10
1198
0
10
1218
0
10
1198
2
100000
-131
100000
-131
Sirenza
VCO190-1225U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4.2
RF
None
1210
1240
47
10
3
2
1
1210
-1
10
1225
0
10
1240
0
10
1225
2
100000
-129
100000
-129
Sirenza
VCO190-1642U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
1616
1667
12
10
3
2
1
1616
-1
10
1641.5
0
10
1667
0
10
1641.5
2
100000
-124
100000
-124
Sirenza
VCO190-1775T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
1700
1850
33
10
3
2
1
1700
-1
10
1775
0
10
1850
0
10
1775
2
100000
-117
100000
-117
Sirenza
VCO190-190T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.6
RF
None
140
240
300
10
3
2
1
140
-1
10
190
0
10
240
0
10
190
2
100000
-125
100000
-125
Sirenza
VCO190-1920U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.8
4.1
RF
None
1865
1975
39
10
3
2
1
1865
-1
10
1920
0
10
1975
0
10
1920
2
100000
-119
100000
-119
Sirenza
VCO190-2210U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2185
2235
10
10
3
2
1
2185
-1
10
2210
0
10
2235
0
10
2210
2
100000
-124
100000
-124
Sirenza
VCO190-235T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
200
270
120
10
3
2
1
200
-1
10
235
0
10
270
0
10
235
2
100000
-130
100000
-130
Sirenza
VCO190-2600T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2500
2700
120
10
3
2
1
2500
-1
10
2600
0
10
2700
0
10
2600
2
100000
-113
100000
-113
Sirenza
VCO190-2840T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2835
2845
22
10
3
2
1
2835
-1
10
2840
0
10
2845
0
10
2840
2
100000
-121
100000
-121
Sirenza
VCO190-2875T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
2850
2900
120
10
3
2
1
2850
-1
10
2875
0
10
2900
0
10
2875
2
100000
-117
100000
-117
Sirenza
VCO190-2950T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2900
3000
120
10
3
2
1
2900
-1
10
2950
0
10
3000
0
10
2950
2
100000
-114
100000
-114
Sirenza
VCO190-313T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.8
RF
0
300
325
100
10
3
2
1
300
-1
10
312.5
0
10
325
0
10
312.5
2
100000
-133
100000
-133
Sirenza
VCO190-370T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
340
400
220
10
3
2
1
340
-1
10
370
0
10
400
0
10
370
2
100000
-130
100000
-130
Sirenza
VCO190-45
None
www.sirenza.com
No_Description
5.25
5.25
1
VCO
0
None
1
4
RF
None
44
46
-999
10
3
2
1
44
-1
10
45
0
10
46
0
10
45
2
10000
-120
10000
-120
Sirenza
VCO190-492T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.6
4.4
RF
None
466
517
100
10
3
2
1
466
-1
10
491.5
0
10
517
0
10
491.5
2
100000
-137
100000
-137
Sirenza
VCO190-52U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
51
53
820
10
3
2
1
51
-1
10
52
0
10
53
0
10
52
2
100000
-138
100000
-138
Sirenza
VCO190-540T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
525
555
6
10
3
2
1
525
-1
10
540
0
10
555
0
112
540
0
Sirenza
VCO190-630T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
600
660
68
10
3
2
1
600
-1
10
630
0
10
660
0
10
630
1
100000
-132
Sirenza
VCO190-680T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
667
693
100
10
3
2
1
667
-1
10
680
0
10
693
0
10
680
1
100000
-136
Sirenza
VCO190-750U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
737
762
47
10
3
2
1
737
-1
10
749.5
0
10
762
0
10
749.5
1
100000
-135
Sirenza
VCO190-811U
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1.3
3.9
RF
None
793
828
39
10
3
2
1
793
-1
10
810.5
0
10
828
0
10
810.5
1
100000
-134
Sirenza
VCO190-845T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
832
858
100
10
3
2
1
832
-1
10
845
0
10
858
0
10
845
1
100000
-135
Sirenza
VCO191-1310U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.8
RF
None
1281
1339
39
10
3
2
1
1281
-1
10
1310
0
10
1339
0
10
1310
1
100000
-122
Sirenza
VCO191-1439U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.8
3.7
RF
None
1397
1480
100
10
3
2
1
1397
-1
10
1438.5
0
10
1480
0
10
1438.5
1
100000
-120
Sirenza
VCO191-1597U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.5
2.7
RF
None
1559
1635
39
10
3
2
1
1559
-1
10
1597
0
10
1635
0
10
1597
1
100000
-116
Sirenza
VCO191-1960U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.5
2.7
RF
None
1930
1990
22
10
3
2
1
1930
-1
10
1960
0
10
1990
0
10
1960
1
100000
-118
Sirenza
VCO191-2100U
None
www.sirenza.com
No_Description
3.5
3.5
1
VCO
0
None
0.5
3.6
RF
None
2050
2150
50
10
3
2
1
2050
-1
10
2100
0
10
2150
0
10
2100
1
100000
-115
Sirenza
VCO191-2170U
None
www.sirenza.com
No_Description
3.5
3.5
1
VCO
0
None
0.5
3.5
RF
None
2132
2204
50
10
3
2
1
2132
-1
10
2168
0
10
2204
0
10
2168
1
100000
-118
Sirenza
VCO191-2450U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.7
RF
None
2400
2500
22
10
3
2
1
2400
-1
10
2450
0
10
2500
0
10
2450
1
100000
-113
Sirenza
VCO191-2650U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.7
RF
None
2600
2700
22
10
3
2
1
2600
-1
10
2650
0
10
2700
0
10
2650
1
100000
-115
Sirenza
VCO191-2750U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.8
RF
None
2700
2800
22
10
3
2
1
2700
-1
10
2750
0
10
2800
0
10
2750
1
100000
-113
Sirenza
VCO191-450U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.5
3
RF
None
435
465
100
10
3
2
1
435
-1
10
450
0
10
465
0
10
450
1
100000
-132
Sirenza
VCO191-773U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.6
RF
None
760
786
100
10
3
2
1
760
-1
10
773
0
10
786
0
10
773
1
100000
-129
Sirenza
VCO191-890U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.6
RF
None
860
920
100
10
3
2
1
860
-1
10
890
0
10
920
0
10
890
1
100000
-122
Sirenza
VCO191-902U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.6
RF
None
889
915
100
10
3
2
1
889
-1
10
902
0
10
915
0
10
902
1
100000
-130
Sirenza
VCO191-915U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.6
RF
None
902
928
100
10
3
2
1
902
-1
10
915
0
10
928
0
10
915
1
100000
-129
Sirenza
VCO191-950U
None
www.sirenza.com
No_Description
3
3
1
VCO
0
None
0.4
2.6
RF
None
920
980
100
10
3
2
1
920
-1
10
950
0
10
980
0
10
950
1
100000
-122
Sirenza
VCO690-3300T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
3200
3400
22
10
3
2
1
3200
-1
10
3300
0
10
3400
0
10
3300
1
100000
-110
Sirenza
VCO690-4790T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
4690
4890
12
10
3
2
1
4690
-1
10
4790
0
10
4890
0
10
4790
1
100000
-107
Sirenza
VCO690-5250T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
5
RF
None
5150
5350
12
10
3
2
1
5150
-1
10
5250
0
10
5350
0
10
5250
1
100000
-105
Sirenza
VCO790-2300T
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2100
2500
68
10
3
2
1
2100
-1
10
2300
0
10
2500
0
10
2300
1
100000
-112
Sirenza
VCO790-2560K
None
www.sirenza.com
No_Description
4.1
4.1
1
VCO
0
None
0.9
3.5
RF
6
2400
2685
10
10
3
2
1
2400
-1
10
2542.5
0
10
2685
0
10
2542.5
1
100000
-112
Sirenza
VCO790-915K
None
www.sirenza.com
No_Description
5
5
1
VCO
0
None
0.4
3.5
RF
6
800
1030
10
10
3
2
1
800
-1
10
915
0
10
1030
0
10
915
1
100000
-113
Zcomm
CLV0600A
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
1
4
RF
0
530
670
150
10
3
2
1
530
-1
10
600
0
10
670
0
10
-1
0
Zcomm
CLV0700E
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
2.25
680
720
100
10
3
2
1
680
-1
10
700
0
10
720
0
10
-1
0
Zcomm
CLV0769E
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
1
4
RF
None
734
804
100
10
3
2
1
734
-1
10
769
0
10
804
0
10
-1
0
Zcomm
CRO2273A
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2240
2306
50
10
3
2
1
2240
-1
10
2273
0
10
2306
0
10
-1
0
Zcomm
CRO6030A
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
6020
6040
50
10
3
2
1
6020
-1
10
6030
0
10
6040
0
10
-1
0
Zcomm
SMV0135A
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
120
150
50
10
3
2
1
120
-1
10
135
0
10
150
0
10
-1
0
Zcomm
V110ME01
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
100
120
200
10
3
2
1
100
-1
10
110
0
10
120
0
10
-1
0
Zcomm
V139ME01
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
1
16
RF
None
118
160
500
10
3
2
1
118
-1
10
139
0
10
160
0
10
-1
0
Zcomm
V175ME10
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
150
200
550
10
3
2
1
150
-1
10
175
0
10
200
0
10
-1
0
Zcomm
V240ME01
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
210
270
100
10
3
2
1
210
-1
10
240
0
10
270
0
10
-1
0
Zcomm
V240ME05
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.6
RF
0
134
246
500
10
3
2
1
134
-1
10
190
0
10
246
0
10
-1
0
Zcomm
V285ME07
None
www.zcomm.com
No_Description
4.25
4.25
1
VCO
0
None
0.5
4.5
RF
6
270
300
200
10
3
2
1
270
-1
10
285
0
10
300
0
10
-1
0
Zcomm
V330ME03
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
310
366
500
10
3
2
1
310
-1
10
338
0
10
366
0
10
-1
0
Zcomm
V440MC02
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
370
460
250
10
3
2
1
370
-1
10
415
0
10
460
0
10
-1
0
Zcomm
V515ME01
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
502
529
150
10
3
2
1
502
-1
10
515.5
0
10
529
0
10
-1
0
Zcomm
V585ME41
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.75
21
RF
None
720
1750
150
10
3
2
1
720
-1
10
1235
0
10
1750
0
10
-1
0
Zcomm
V600ME10
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
20
RF
None
1600
3200
50
10
3
2
1
1600
-1
10
2400
0
10
3200
0
10
-1
0
Zcomm
V600ME12
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0
20
RF
None
2050
3550
50
10
3
2
1
2050
-1
10
2800
0
10
3550
0
10
-1
0
Zcomm
V602ME15
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
1100
1400
75
10
3
2
1
1100
-1
10
1250
0
10
1400
0
10
-1
0
Zcomm
V602ME26
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.25
4.75
RF
None
1500
1800
50
10
3
2
1
1500
-1
10
1650
0
10
1800
0
10
-1
0
Zcomm
V610ME08
None
www.zcomm.com
No_Description
4.5
4.5
1
VCO
0
None
0.5
4.5
RF
6
1950
2150
50
10
3
2
1
1950
-1
10
2050
0
10
2150
0
10
-1
0
Zcomm
V804ME14
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
2300
2450
50
10
3
2
1
2300
-1
10
2375
0
10
2450
0
10
-1
0
Zcomm
V846ME07
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.3
11.7
RF
None
3000
3700
50
10
3
2
1
3000
-1
10
3350
0
10
3700
0
10
-1
0
Zcomm
V940ME03
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.5
4.5
RF
None
5725
5875
50
10
3
2
1
5725
-1
10
5800
0
10
5875
0
10
-1
0
Zcomm
V956ME01
None
www.zcomm.com
No_Description
5
5
1
VCO
0
None
0.3
4.7
RF
None
6175
6325
50
10
3
2
1
6175
-1
10
6250
0
10
6325
0
10
-1
0
Epson
TCO-2111-AA, 245.76 MHz
9x14mm SMD
www.epson.com
VCXO, LVPECL
3.135
3.465
1
VCXO
0
None
0.165
3.135
LVPECL
None
245.76
245.76
0
0.123
3
2
1
245.75
-1
0.123
245.76
0
0.234
245.77
0
0.345
245.76
5
100
-99.8
1000
-122.4
1000000
-152.9
10000000
-152.9
20000000
-153.1
Suntsu
SVD, 30.72 MHz
5x7.3mm
www.suntsuinc.com
VCXO, LVCMOS
3.135
3.465
1
VCXO
0
None
0.3
3
LVPECL
None
30.72
30.72
0
0.123
3
2
1
30.72
-1
0.0055123
30.72
0
0.0055123
30.72
0
0.0055123
30.72
6
100
-96.7
1000
-128.3
10000
-144.6
100000
-155.2
1000000
-160
5000000
-160.4
Suntsu
SVD, 54.0 MHz
5x7.3mm
www.suntsuinc.com
VCXO, LVCMOS
3.135
3.465
1
VCXO
0
None
0.3
3
LVPECL
None
54
54
0
0.123
3
2
1
54
-1
0.0065
54
0
0.0065
54
0
0.0065
54
6
100
-98.8
1000
-126.8
10000
-146.5
100000
-156.8
1000000
-161.7
5000000
-162.2
Crystek
CVPD-920, 61.44 MHz
9x14mm SMD
www
VCXO, LVPECL
3
3.6
1
VCXO
0
None
0
3.3
LVPECL
None
61.44
61.44
0
0.0035
3
2
1
61.44
-1
0.0035
61.44
0
0.0035
61.44
0
0.0035
61.44
7
10
-88.9
100
-115.4
1000
-139.2
10000
-143.6
100000
-150
1000000
-150
10000000
-151.8
Custom
VCXO
NA
NA
Generic VCXO
0
0
1
VCXO
0
None
1
1
LVPECL
None
0
20000
0
0.002
3
2
1
25
-4
0.002
245.76
0
0.002
1000
4
0.002
245.76
1
10000
-142
Custom
Custom
NA
NA
Custom
0
0
1
VCO
0
None
1
1
RF
None
0
20000
0
100
3
2
1
100
-10
10
1000
0
100
10000
6
200
1000
1
100000
-120

  • 0 in reply to Timothy T
    Intellectual 585 points

    Timothy,

    I'm able to generate the 19.2MHz output from the OSCout output and the 512MHz out of the DCLKout0 port (see attached).  These originate from the 10MHz input on CLKin1.  Both of these outputs are synchronized to the 10MHz correct?  I was able to use the web based tool to fill in the blanks manually for CDT and Code Loader 4, but an auto entry method for the LMK04828BEVM would be greatly appreciated.

    OSCout_19_2MHz_CLKout1_512MHz.txt 
    [SETUP]
ADDRESS=888
CLOCK=8
DATA=4
LE=2
PART=LMK04828B
PINPOSITION00=1
PINPOSITION01=10
PINPOSITION02=5
PINPOSITION03=6
PINPOSITION04=7
[MODES]
NAME00=R0 (INIT)
VALUE00=144
NAME01=R0
VALUE01=16
NAME02=R2
VALUE02=512
NAME03=R256
VALUE03=65541
NAME04=R257
VALUE04=65877
NAME05=R259
VALUE05=66304
NAME06=R260
VALUE06=66562
NAME07=R261
VALUE07=66816
NAME08=R262
VALUE08=67185
NAME09=R263
VALUE09=67329
NAME10=R264
VALUE10=67596
NAME11=R265
VALUE11=67925
NAME12=R267
VALUE12=68352
NAME13=R268
VALUE13=68610
NAME14=R269
VALUE14=68864
NAME15=R270
VALUE15=69361
NAME16=R271
VALUE16=69376
NAME17=R272
VALUE17=69637
NAME18=R273
VALUE18=69973
NAME19=R275
VALUE19=70400
NAME20=R276
VALUE20=70656
NAME21=R277
VALUE21=70912
NAME22=R278
VALUE22=71289
NAME23=R279
VALUE23=71440
NAME24=R280
VALUE24=71704
NAME25=R281
VALUE25=72021
NAME26=R283
VALUE26=72448
NAME27=R284
VALUE27=72706
NAME28=R285
VALUE28=72960
NAME29=R286
VALUE29=73465
NAME30=R287
VALUE30=73488
NAME31=R288
VALUE31=73736
NAME32=R289
VALUE32=74069
NAME33=R291
VALUE33=74496
NAME34=R292
VALUE34=74754
NAME35=R293
VALUE35=75008
NAME36=R294
VALUE36=75513
NAME37=R295
VALUE37=75520
NAME38=R296
VALUE38=75784
NAME39=R297
VALUE39=76117
NAME40=R299
VALUE40=76544
NAME41=R300
VALUE41=76802
NAME42=R301
VALUE42=77056
NAME43=R302
VALUE43=77561
NAME44=R303
VALUE44=77568
NAME45=R304
VALUE45=77830
NAME46=R305
VALUE46=78165
NAME47=R307
VALUE47=78592
NAME48=R308
VALUE48=78850
NAME49=R309
VALUE49=79104
NAME50=R310
VALUE50=79609
NAME51=R311
VALUE51=79667
NAME52=R312
VALUE52=79924
NAME53=R313
VALUE53=80128
NAME54=R314
VALUE54=80394
NAME55=R315
VALUE55=80640
NAME56=R316
VALUE56=80896
NAME57=R317
VALUE57=81160
NAME58=R318
VALUE58=81411
NAME59=R319
VALUE59=81664
NAME60=R320
VALUE60=81935
NAME61=R321
VALUE61=82176
NAME62=R322
VALUE62=82432
NAME63=R323
VALUE63=82705
NAME64=R324
VALUE64=82944
NAME65=R325
VALUE65=83327
NAME66=R326
VALUE66=83480
NAME67=R327
VALUE67=83738
NAME68=R328
VALUE68=83970
NAME69=R329
VALUE69=84290
NAME70=R330
VALUE70=84482
NAME71=R331
VALUE71=84758
NAME72=R332
VALUE72=84992
NAME73=R333
VALUE73=85248
NAME74=R334
VALUE74=85696
NAME75=R335
VALUE75=85887
NAME76=R336
VALUE76=86019
NAME77=R337
VALUE77=86274
NAME78=R338
VALUE78=86528
NAME79=R339
VALUE79=86784
NAME80=R340
VALUE80=87160
NAME81=R341
VALUE81=87296
NAME82=R342
VALUE82=87577
NAME83=R343
VALUE83=87808
NAME84=R344
VALUE84=88214
NAME85=R345
VALUE85=88320
NAME86=R346
VALUE86=88624
NAME87=R347
VALUE87=89076
NAME88=R348
VALUE88=89120
NAME89=R349
VALUE89=89344
NAME90=R350
VALUE90=89600
NAME91=R351
VALUE91=89867
NAME92=R352
VALUE92=90112
NAME93=R353
VALUE93=90374
NAME94=R354
VALUE94=90629
NAME95=R355
VALUE95=90880
NAME96=R356
VALUE96=91136
NAME97=R357
VALUE97=91404
NAME98=R380
VALUE98=97301
NAME99=R381
VALUE99=97587
NAME100=R358
VALUE100=91648
NAME101=R359
VALUE101=91904
NAME102=R360
VALUE102=92210
NAME103=R361
VALUE103=92509
NAME104=R362
VALUE104=92704
NAME105=R363
VALUE105=92928
NAME106=R364
VALUE106=93184
NAME107=R365
VALUE107=93440
NAME108=R366
VALUE108=93715
NAME109=R371
VALUE109=94976
NAME110=R8189
VALUE110=2096384
NAME111=R8190
VALUE111=2096640
NAME112=R8191
VALUE112=2096979
OSCIN00=10
EXTRA_PLL_N_DIV_1_00=1
OSCIN01=19.2
EXTRA_PLL_N_DIV_1_01=1
PINS=0
[BURST]
COUNT=0
[FLEX]
CLKout0_FREQ=512
CLKout10_FREQ=320
CLKout11_FREQ=320
CLKout12_FREQ=426.666666666667
CLKout13_FREQ=426.666666666667
CLKout1_FREQ=512
CLKout2_FREQ=213.333333333333
CLKout3_FREQ=213.333333333333
CLKout4_FREQ=512
CLKout5_FREQ=512
CLKout6_FREQ=106.666666666667
CLKout7_FREQ=106.666666666667
CLKout8_FREQ=320
CLKout9_FREQ=320
DCLKout0_DIV_ud=DCLKout0_DIV
DCLKout10_DIV_ud=DCLKout10_DIV
DCLKout12_DIV_ud=DCLKout12_DIV
DCLKout2_DIV_ud=DCLKout2_DIV
DCLKout4_DIV_ud=DCLKout4_DIV
DCLKout6_DIV_ud=DCLKout6_DIV
DCLKout8_DIV_ud=DCLKout8_DIV
OSCout_FREQ=19.2
PLL2_PDF=6.4
SYSREF_freq=1
VCO_freq=2560
VCXO_freq=19.2
sync_SYSREF_freq=1
sync_VCO_freq=2560
[FLEXHASH]
HASHVALUE=11587216

    Also it would be handy if the Clock Design Tool could select the LMK04828 in Wizard Mode

  • 0 in reply to Ron Breding
    Intellectual 585 points

    What BALUN modules would you suggest going from the 240 Ohm outputs to 50 terminations?

  • 0 in reply to Ron Breding
    TI__Mastermind 28550 points
    Hello Ron,

    LVPECL output impedance is low, < 10 ohms for example. So the fact of 240 ohm emitter resistor or 120 ohm emitter resistor is not really significant. Having said that, you may see more ringing on an LVPECL output vs. an LVDS output if the load is not well terminated. This can be mitigated by adding a 10 to 20 ohms series resistor with the LVPECL output. I've rarely seen this necessary.

    When using the emitter resistor to ground for LVPECL, the intention is to AC coupled the LVPECL output. The load could be 100 ohm differential across the pair or 50 ohms to ground on both outputs. For example if you have: OUTPUT, emitter resistor to ground, AC cap, transmission line, 50 ohms to ground. You will find a good signal. Be sure to terminate both LVPECL outputs in this fashion. Maybe this will work for you?

    As for baluns... I've used minicircuit baluns before. If you want to convert the balanced (differential) LVPECL signal to an unbalanced 50 ohms, you could use an...
    * ADT2-1T balun: 0.4 to 450 MHz, 2:1 ohms ratio, blocks DC.
    * ADT2-1T-1P balun: 8 to 600 MHz, 2:1 ohms ratio, blocks DC.
    * ADTL2-18 balun: 30 MHz to 1800 MHz, 2:1 ohms ratio, doesn't block DC.

    Are you needing a higher frequency balun?

    the 2:1 ohms ratio means it would work well for 100 ohm differential : 50 ohms single ended.

    73,
    Timothy
  • 0 in reply to Timothy T
    Intellectual 585 points
    So I'm outputting 153.6MHz and 512MHz LVDS signals. The 153.6MHz signal needs to be converted to a standard 50 Ohm single-ended signal that will serve as the clock input to J6 of the DAC3484EVM. the 512MHz will serve as a differential 50 Ohm terminated (standard) carrier serving as the Local Oscillator to the TI TRF3705EVM. I had ear-marked 4.8:1 baluns as the driving circuitry on the DCLKout signals as the differential signals appear to be 240 Ohm impedance.
  • 0 in reply to Ron Breding
    TI__Genius 9920 points
    Hi Ron,
    The figure is not showed.

    Regards,
    Shawn
  • 0 in reply to Ron Breding
    TI__Mastermind 28550 points

    Hello Ron, It appears you're using the old CodeLoader EVM GUI.  I think you will find the TICS Pro EVM GUI easier to use. Download at: TICSPRO-SW.

    Is there a specific reason your are planning to use LVDS?  I think you will find best performance by simply using LVPECL single ended to the DAC3484EVM and TRF3705EVM.

    If you want higher swing with LVPECL20, replace 240 ohm emitter resistors with 120 ohm emitter resistors.

    4.8:1 baluns are not necessary, if you do want to use a balun with AC coupled LVPECL, a 2:1 ohms ratio would work.

    For your convenience, I've attached a .tcs file you can load into TICS Pro which will take 10 MHz in at CLKin1, work with a 19.2 MHz VCXO on OSCin.  Use VCO1 to generate 3072 MHz from which /6 = 512 MHz and /20 = 153.6 MHz.  I currently have the output format set to LVDS for the output clocks, but for simplicity in connecting EVMs, consider the single ended LVPECL.  Be sure to terminate the unused output with 50 ohms.  If ever you need two 512 MHz outputs, you could simple route each 512 MHz output from the same CLKout.  One getting the non-inverted output, the other getting the inverted output.

    For the record, I did not confirm this config, I don't have an EVM with a 19.2 MHz VCXO readily available.

    example config for LMK04828B.tcs

    73,
    Timothy