ACS8510REV2.1 Semtech Corporation, ACS8510REV2.1 Datasheet - Page 2

• Manufacturer Part Number: ACS8510REV2.1
• Description: Synchronous Equipment Timing Source for Sonet or SDH Network Elements
• Manufacturer: Semtech Corporation

List of Sections
List of Sections
List of Sections
List of Sections
List of Sections
Revision 2.00/September 2003
Description ................................................................................................................................................................................................ 1
Block Diagram ........................................................................................................................................................................................... 1
Features ..................................................................................................................................................................................................... 1
Table of Contents ...................................................................................................................................................................................... 2
Pin Diagram ............................................................................................................................................................................................... 5
Pin Descriptions ........................................................................................................................................................................................ 6
Functional Description ............................................................................................................................................................................. 9
Electrical Specification .......................................................................................................................................................................... 48
ADVANCED COMMUNICATIONS
T T T T Table of Cont
able of Cont
able of Cont
able of Cont
able of Contents
Local Oscillator Clock ................................................................................................................................................................................... 10
Input Interfaces ............................................................................................................................................................................................. 10
Over-Voltage Protection .............................................................................................................................................................................. 10
Input Reference Clock Ports ....................................................................................................................................................................... 11
Input Wander and Jitter Tolerance .............................................................................................................................................................. 9
Output Clock Ports ........................................................................................................................................................................................ 12
Output Wander and Jitter ............................................................................................................................................................................ 13
Phase Variation ............................................................................................................................................................................................. 18
Phase Build Out ............................................................................................................................................................................................. 21
Microprocessor Interface ............................................................................................................................................................................. 21
Interrupt Enable and Clear ......................................................................................................................................................................... 22
Register Map .................................................................................................................................................................................................. 23
Register Map Description ........................................................................................................................................................................... 27
Selection of Input Reference Clock Source ............................................................................................................................................. 36
Clock Quality Monitoring ............................................................................................................................................................................. 38
Activity Monitoring ....................................................................................................................................................................................... 39
Frequency Monitoring .................................................................................................................................................................................. 39
Modes of Operation ...................................................................................................................................................................................... 41
Protection Facility ........................................................................................................................................................................................ 43
JTAG .................................................................................................................................................................................................................. 45
PORB ................................................................................................................................................................................................................ 45
ITU and ETSI Specification ............................................................................................................................................................. 10
Telcordia GR-1244 CORE Specification ....................................................................................................................................... 10
Crystal Frequency Calibration ...................................................................................................................................................... 10
Low Speed Output Clock (DPLL2) ................................................................................................................................................. 12
High Speed Output Clock (DPLL1) ............................................................................................................................................... 12
Frame Sync and Multi-Frame Sync Clocks (Part of DPLL1) ................................................................................................... 13
Low Jitter Multiple E1/DS1 Outputs ........................................................................................................................................... 13
Motorola Mode ................................................................................................................................................................................ 21
Intel Mode ........................................................................................................................................................................................ 21
Multiplexed Mode ........................................................................................................................................................................... 21
Serial Mode ...................................................................................................................................................................................... 21
EPROM Mode ................................................................................................................................................................................... 21
Register Set ..................................................................................................................................................................................... 22
Configuration Registers ................................................................................................................................................................. 22
Status Registers .............................................................................................................................................................................. 22
Register Access ............................................................................................................................................................................... 22
Forced Control Selection ............................................................................................................................................................... 37
Automatic Control Selection ........................................................................................................................................................ 37
Ultra Fast Switching ....................................................................................................................................................................... 37
External Protection Switching ..................................................................................................................................................... 38
Free-run mode ................................................................................................................................................................................. 41
Pre-Locked mode ............................................................................................................................................................................ 41
Locked mode .................................................................................................................................................................................... 41
Lost_Phase mode ........................................................................................................................................................................... 41
Holdover mode ................................................................................................................................................................................ 42
Pre-Locked(2) mode ........................................................................................................................................................................ 42
Alignment of Priority Tables in Master and Slave ACS8510 ................................................................................................. 44
Alignment of the Selection of Reference Sources for TOUT4 Generation in the Master and Slave ACS8510 ........... 45
Alignment of the Phases of the 8kHz and 2kHz Clocks in both Master and Slave ACS8510 ....................................... 45
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Semtech Corp.
2
ACS8510 Rev2.1 SETS
www.semtech.com
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