SYNCHRONOUS EQUIPMENT CLOCK/SYNCHRONIZER - SY02-PLL
SY02-PLL
Date: May 18, 2004
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INTRODUCTION
The SY02-PLL is a cr...
SYNCHRONOUS EQUIPMENT CLOCK/SYNCHRONIZER - SY02-PLL
SY02-PLL
Date: May 18, 2004
INTRODUCTION
The SY02-PLL is a crystal-based PLL synchronizer designed as a module level subsystem for easy incorporation into telecommunication equipment.
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FEATURES
Low jitter output from intrinsically low jitter VCXO; Four selectable references inputs: 8, 16, 32 and 64KHz; Alarms and status; Buffered reference output; Tri-state (high impedance) reference and oscillators outputs; Provides free running clock output; The unit changes timing modes in response to external events; J-TAG service port for re-programming and servicing;
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APPLICATIONS
ATM SDH PDH SONET other telecommunication equipment.
RALTRON ELECTRONICS CORP. 10651 N.W.19 St Florida 33172 U.S.A. Tel: 305 593-6033 Fax: 305-594-3973 e-mail:
[email protected] Internet: http://www.raltron.com
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SYNCHRONOUS EQUIPMENT CLOCK/SYNCHRONIZER - SY02-PLL
LOL
LOR
REF OUT REF IN FREE-RUN
IN-B IN-A
MUX, FPD, Counters & Logic
LOOP FILTER
VCXO
OUT
J-TAG PORT
EN OUT
DESCRIPTION
The SY02-PLL is a Phase Lock Loop has been designed as a module level subsystem for easy incorporation into telecommunication equipment. The module generates the output from a low jitter VCXO. The SY02-PLL can lock to one of four reference frequencies from 8 to 64kHz that can be selected using to external select pins. The counters, phase detector and other logic are implemented in programmable logic. The loop bandwidth is optimized according to u...
