ACS8509 데이터 시트보기 (PDF) - Semtech Corporation
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ACS8509 Datasheet PDF : 68 Pages
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Table of Contents
ACS8509 SETS
ADVANCED COMMUNICATIONS
FINAL
DATASHEET
Table of Contents
Section
Page
Description ................................................................................................................................................................................................. 1
Block Diagram............................................................................................................................................................................................ 1
Features ..................................................................................................................................................................................................... 1
Table of Contents ...................................................................................................................................................................................... 2
Pin Diagram ............................................................................................................................................................................................... 4
Pin Description........................................................................................................................................................................................... 5
Functional Description .............................................................................................................................................................................. 8
Local Oscillator Clock.........................................................................................................................................................................8
Crystal Frequency Calibration.................................................................................................................................................. 8
Input Interfaces..................................................................................................................................................................................9
Over-Voltage Protection .....................................................................................................................................................................9
Input Reference Clock Ports .............................................................................................................................................................9
DivN Examples....................................................................................................................................................................... 10
Input Wander and Jitter Tolerance ................................................................................................................................................ 10
Frame Sync and Multi-Frame Sync Clocks (Part of TOUT0) ................................................................................................. 12
Output Clock Ports .......................................................................................................................................................................... 12
Low-speed Output Clock (TOUT4) .......................................................................................................................................... 12
High-speed Output Clock (Part of TOUT0) ............................................................................................................................. 12
Low Jitter Multiple E1/DS1 Outputs .................................................................................................................................... 13
Output Wander and Jitter ............................................................................................................................................................... 13
Phase Variation ............................................................................................................................................................................... 14
Phase Build-Out .............................................................................................................................................................................. 17
Microprocessor Interface ............................................................................................................................................................... 17
Motorola Mode ...................................................................................................................................................................... 17
Intel Mode.............................................................................................................................................................................. 17
Multiplexed Mode.................................................................................................................................................................. 17
Serial Mode............................................................................................................................................................................ 17
EPROM Mode......................................................................................................................................................................... 17
Register Set ..................................................................................................................................................................................... 18
Configuration Registers ........................................................................................................................................................ 18
Status Registers .................................................................................................................................................................... 18
Register Access............................................................................................................................................................................... 18
Interrupt Enable and Clear ............................................................................................................................................................. 18
Register Map ................................................................................................................................................................................... 18
Register Map Description............................................................................................................................................................... 23
Selection of Input Reference Clock Source................................................................................................................................... 36
Forced Control Selection....................................................................................................................................................... 36
Automatic Control Selection ................................................................................................................................................. 36
Ultra Fast Switching .............................................................................................................................................................. 37
Clock Quality Monitoring................................................................................................................................................................. 37
Activity Monitoring........................................................................................................................................................................... 38
Frequency Monitoring..................................................................................................................................................................... 39
Modes of Operation ........................................................................................................................................................................ 39
Free-run mode ....................................................................................................................................................................... 39
Pre-Locked mode .................................................................................................................................................................. 39
Locked mode ......................................................................................................................................................................... 39
Lost_Phase mode.................................................................................................................................................................. 40
Holdover mode ...................................................................................................................................................................... 40
Pre-Locked(2) mode.............................................................................................................................................................. 41
Revision 2.00/January 2006 © Semtech Corp.
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