Table Of Contents - Texas Instruments LMK04906 Series User Manual

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TABLE OF CONTENTS ..............................................................................................................................................................3
GENERAL DESCRIPTION ..........................................................................................................................................................5
Evaluation Board Kit Contents .................................................................................................................. 5
Available LMK04906 Evaluation Boards ................................................................................................. 5
Available LMK04906 Family Devices ...................................................................................................... 5
QUICK START ..........................................................................................................................................................................6
Default CodeLoader Modes for Evaluation Boards................................................................................... 7
EXAMPLE: USING CODELOADER TO PROGRAM THE LMK04906B ............................................................................................8
1. Start CodeLoader 4 Application ............................................................................................................ 8
2. Select Device ......................................................................................................................................... 8
3. Program/Load Device ............................................................................................................................ 9
4. Restoring a Default Mode ...................................................................................................................... 9
5. Visual Confirmation of Frequency Lock ............................................................................................. 10
6. Enable Clock Outputs .......................................................................................................................... 10
PLL LOOP FILTERS AND LOOP PARAMETERS ......................................................................................................................... 12
PLL 1 Loop Filter .................................................................................................................................... 12
25 MHz VCXO PLL ............................................................................................................................ 12
PLL2 Loop Filter ..................................................................................................................................... 13
EVALUATION BOARD INPUTS AND OUTPUTS ........................................................................................................................ 14
RECOMMENDED TEST EQUIPMENT ...................................................................................................................................... 21
APPENDIX A: CODELOADER USAGE....................................................................................................................................... 22
Port Setup Tab.......................................................................................................................................... 22
Clock Outputs Tab ................................................................................................................................... 23
PLL1 Tab ................................................................................................................................................. 26
Setting the PLL1 VCO Frequency and PLL2 Reference Frequency ................................................... 27
PLL2 Tab ................................................................................................................................................. 28
Bits/Pins Tab ............................................................................................................................................ 29
Registers Tab ........................................................................................................................................... 34
APPENDIX B: TYPICAL PHASE NOISE PERFORMANCE PLOTS .................................................................................................. 35
PLL1 ........................................................................................................................................................ 35
25 MHz VCXO Phase Noise ............................................................................................................... 35
Clock Output Measurement Technique ............................................................................................... 36
Clock Outputs (CLKout).......................................................................................................................... 37
-
Revised
December 2013
LMK04906 Family: Low-Noise Clock Jitter with Dual Loop PLLs
Copyright © 2013, Texas Instruments Incorporated
SNAU126A
3

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