Datasheet

L M K 0 4 1 X X - R E V 3 E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S
SNLU099
2
Table of Contents
QUICK START ................................................................................................................................... 3
PLL LOOP FILTERS AND LOOP PARAMETERS ................................................................................... 4
PLL 1 Loop Filter ....................................................................................................................................................... 4
PLL2 Loop Filter ........................................................................................................................................................ 4
122.88 MHz VCXO (Reference Input) ................................................................................... 4
EVALUATION BOARD INPUTS/OUTPUTS ........................................................................................... 5
APPENDIX A: CODELOADER USAGE ................................................................................................ 8
Port Setup Tab ............................................................................................................................................................ 8
Clock Outputs Tab ...................................................................................................................................................... 9
PLL1 Tab .................................................................................................................................................................. 10
PLL2 Tab .................................................................................................................................................................. 11
Bits/Pins Tab ............................................................................................................................................................ 12
Registers Tab ............................................................................................................................................................ 14
APPENDIX B: TYPICAL PHASE NOISE PERFORMANCE PLOTS ......................................................... 15
PLL1 ......................................................................................................................................................................... 15
Crystek 122.88 MHz VCXO................................................................................................. 15
PLL2 ......................................................................................................................................................................... 16
Clock Outputs ........................................................................................................................................................... 17
Clock Output Measurement Technique ................................................................................ 17
LMK041x0 Phase Noise........................................................................................................................................... 18
LMK041x1 Phase Noise........................................................................................................................................... 19
LMK041x2 Phase Noise........................................................................................................................................... 20
LMK041x3 Phase Noise........................................................................................................................................... 21
APPENDIX C: SCHEMATICS ............................................................................................................ 22
Power ........................................................................................................................................................................ 22
Main ......................................................................................................................................................................... 23
Clock Outputs ........................................................................................................................................................... 24
APPENDIX D: BOARD LAYERS STACKUP ....................................................................................... 25
APPENDIX E: BILL OF MATERIALS ................................................................................................ 26
Common Bill of Materials for Evaluation Boards .................................................................................................... 26
Bill of Material Custom to LMK04100BEVAL ....................................................................................................... 29
Bill of Material Custom to LMK04100BEVAL-XO ................................................................................................ 29
Bill of Material Custom to LMK04131BEVAL ....................................................................................................... 30
Bill of Material Custom to LMK04131BEVAL-XO ................................................................................................ 30
Bill of Material Custom to LMK04102BEVAL ....................................................................................................... 31
Bill of Material Custom to LMK04133BEVAL ....................................................................................................... 31
APPENDIX F: BALUN INFORMATION ............................................................................................... 32
Typical Balun Frequency Response ......................................................................................................................... 32
APPENDIX G: VCXO/CRYSTAL CHANGES ..................................................................................... 33
Changing from Crystal Resonator to VCXO ............................................................................................................ 33
Changing from VCXO to Crystal Resonator ............................................................................................................ 36
APPENDIX H: LMK04100 .............................................................................................................. 39
APPENDIX I: PROPERLY CONFIGURING LPT PORT ......................................................................... 42
LPT Driver Loading ................................................................................................................................................. 42
Correct LPT Port/Address ........................................................................................................................................ 42
Correct LPT Mode .................................................................................................................................................... 43
APPENDIX J: TROUBLESHOOTING INFORMATION ........................................................................... 44
1) Confirm Communications ............................................................................................................................. 44
2) Confirm PLL1 operation/locking .................................................................................................................. 44
3) Confirm PLL2 operation/locking .................................................................................................................. 45