ACS8526LC Semtech Corporation, ACS8526LC Datasheet - Page 2

• Manufacturer Part Number: ACS8526LC
• Description: Line Card Protection Switch for PDH, Sonet or SDH Systems
• Manufacturer: Semtech Corporation

Section
Description ................................................................................................................................................................................................. 1
Block Diagram............................................................................................................................................................................................ 1
Features ..................................................................................................................................................................................................... 1
Table of Contents ...................................................................................................................................................................................... 2
Pin Diagram ............................................................................................................................................................................................... 3
Pin Description........................................................................................................................................................................................... 4
Introduction................................................................................................................................................................................................ 6
General Description................................................................................................................................................................................... 6
Register Map........................................................................................................................................................................................... 30
Register Descriptions ............................................................................................................................................................................. 32
Electrical Specifications ......................................................................................................................................................................... 61
Package Information .............................................................................................................................................................................. 68
Application Information .......................................................................................................................................................................... 70
References .............................................................................................................................................................................................. 71
Abbreviations .......................................................................................................................................................................................... 71
Notes ....................................................................................................................................................................................................... 72
Trademark Acknowledgements ............................................................................................................................................................. 72
Revision Status/History ......................................................................................................................................................................... 73
Ordering Information .............................................................................................................................................................................. 74
Revision 4.01/June 2006 © Semtech Corp.
Table of Contents
ADVANCED COMMUNICATIONS
Inputs ..................................................................................................................................................................................................6
Selection of Input SECs .....................................................................................................................................................................8
Activity Monitors.................................................................................................................................................................................9
Phase Locked Loops (PLLs) ........................................................................................................................................................... 10
Outputs ............................................................................................................................................................................................ 17
Power-On Reset............................................................................................................................................................................... 25
Local Oscillator Clock...................................................................................................................................................................... 27
Status Reporting ............................................................................................................................................................................. 27
Serial Interface................................................................................................................................................................................ 27
Register Organization ..................................................................................................................................................................... 30
JTAG ................................................................................................................................................................................................. 61
Over-voltage Protection .................................................................................................................................................................. 61
ESD Protection ................................................................................................................................................................................ 61
Latchup Protection.......................................................................................................................................................................... 61
Maximum Ratings ........................................................................................................................................................................... 62
Operating Conditions ...................................................................................................................................................................... 62
Jitter Performance .......................................................................................................................................................................... 65
Input/Output Timing ....................................................................................................................................................................... 67
Thermal Conditions......................................................................................................................................................................... 69
Disclaimers...................................................................................................................................................................................... 74
Contacts........................................................................................................................................................................................... 74
Preconfiguring Inputs - Expected Input Frequency ................................................................................................................ 7
Preconfiguring Inputs- SONET/SDH ........................................................................................................................................ 7
Input Locking Frequency Modes ............................................................................................................................................. 7
Initialization .............................................................................................................................................................................. 8
SEC Selection - SRCSW pin...................................................................................................................................................... 8
Output Clock Phase Continuity on Source Switchover .......................................................................................................... 8
SEC Activity Monitors ............................................................................................................................................................... 9
Fast Activity Monitor.............................................................................................................................................................. 10
PLL Overview ......................................................................................................................................................................... 10
PLL Architecture .................................................................................................................................................................... 11
PLL Operational Controls ...................................................................................................................................................... 14
DPLL Feature Summary ........................................................................................................................................................ 16
Output Frequency Selection by Hardware ........................................................................................................................... 17
Output Frequency Selection by Register Programming...................................................................................................... 17
Crystal Frequency Calibration............................................................................................................................................... 27
Loss of Input Signal - LOS Flag ............................................................................................................................................. 27
Status Information ................................................................................................................................................................ 27
Multi-word Registers ............................................................................................................................................................. 30
Register Access ..................................................................................................................................................................... 30
Flags ....................................................................................................................................................................................... 30
Defaults.................................................................................................................................................................................. 30
Table of Contents
FINAL
Page 2
ACS8526 LC/P LITE
DATASHEET
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