Table Of Contents; Snau076B - Texas Instruments LMK048 Series User Manual

Table of Contents

TABLE OF CONTENTS ..............................................................................................................................................................3
GENERAL DESCRIPTION ..........................................................................................................................................................5
E B K C
VALUATION OARD IT ONTENTS
A LMK048 E
VAILABLE XX VALUATION
A LMK04800 F
VAILABLE AMILY
QUICK START ..........................................................................................................................................................................6
D C L M
EFAULT ODE OADER ODES FOR
EXAMPLE: USING CODELOADER TO PROGRAM THE LMK04808B ............................................................................................8
1. S C L 4 A
TART ODE OADER PPLICATION
2. S D ............................................................................................................................................................................ 8
ELECT EVICE
3. P /L D .............................................................................................................................................................. 8
ROGRAM OAD EVICE
4. R D M
ESTORING A EFAULT ODE
5. V C
ISUAL ONFIRMATION OF
6. E C O ............................................................................................................................................................ 10
NABLE LOCK UTPUTS
PLL LOOP FILTERS AND LOOP PARAMETERS ......................................................................................................................... 12
PLL 1 L F ....................................................................................................................................................................... 12
OOP ILTER
122.88 MHz VCXO PLL ......................................................................................................................................................... 12
PLL2 L F ........................................................................................................................................................................ 13
OOP ILTER
Integrated VCO PLL ............................................................................................................................................................. 13
EVALUATION BOARD INPUTS AND OUTPUTS ........................................................................................................................ 14
RECOMMENDED TEST EQUIPMENT ...................................................................................................................................... 22
PROGRAMMING 0-DELAY MODE IN CODELOADER ............................................................................................................... 23
O ................................................................................................................................................................................... 23
VERVIEW
D L 0-D M E
UAL OOP ELAY ODE
Programming Steps ............................................................................................................................................................. 23
Details ................................................................................................................................................................................. 23
S L 0-D M
INGLE OOP ELAY ODE
Programming Steps ............................................................................................................................................................. 25
Details ................................................................................................................................................................................. 25
APPENDIX A: CODELOADER USAGE....................................................................................................................................... 27
P S T .......................................................................................................................................................................... 27
ORT ETUP AB
C O T ..................................................................................................................................................................... 28
LOCK UTPUTS AB
PLL1 T .................................................................................................................................................................................... 30
AB
Setting the PLL1 VCO Frequency and PLL2 Reference Frequency ........................................................................................ 31
PLL2 T .................................................................................................................................................................................... 32
AB
B /P T ............................................................................................................................................................................. 33
ITS INS AB
R T ............................................................................................................................................................................. 38
EGISTERS AB
APPENDIX B: TYPICAL PHASE NOISE PERFORMANCE PLOTS .................................................................................................. 39
PLL1 .......................................................................................................................................................................................... 39
122.88 MHz VCXO Phase Noise ........................................................................................................................................... 39
Clock Output Measurement Technique ............................................................................................................................... 40
Buffered OSCout Phase Noise .............................................................................................................................................. 40
Revised - August 2014
All manuals and user guides at all-guides.com
................................................................................................................................................... 5
B ...................................................................................................................................... 5
OARDS
D ............................................................................................................................................ 5
EVICES
E B ..................................................................................................................... 7
VALUATION OARDS
............................................................................................................................................... 8
....................................................................................................................................................... 9
F L ................................................................................................................................. 10
REQUENCY OCK
............................................................................................................................................ 23
XAMPLES
E .......................................................................................................................................... 25
XAMPLES
LMK04800 Family
Copyright © 2014, Texas Instruments Incorporated
www.ti.com

SNAU076B

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