SY02-PLL
SY02-PLL is SYNCHRONOUS EQUIPMENT CLOCK REGENERATOR manufactured by Raltron Electronics.
SYNCHRONOUS EQUIPMENT CLOCK/SYNCHRONIZER
- 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 telemunication 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 telemunication equipment.
RALTRON ELECTRONICS CORP. 10651 N.W.19 St Florida 33172 U.S.A. Tel: 305 593-6033 Fax: 305-594-3973 e-mail: sales@raltron. Internet: http://.raltron. th
SYNCHRONOUS EQUIPMENT CLOCK/SYNCHRONIZER
- SY02-PLL
REF OUT REF IN FREE-RUN
IN-B IN-A
MUX, FPD, Counters & Logic
LOOP FILTER
VCXO
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 telemunication 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 64k Hz 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 used VCXO and wanted output performance. The two output signals monitor the status of the phase loop LOL (Loss of Lock) and LOR (Loss of Reference). The two control inputs provides module to go into free-run regardless of the reference (FREE_RUN) and to the tri-state high impedance output (OUT EN). The SMD package dimensions are 19.4 x 20.3 mm and power supply is 3.3V.
- INPUT REFERENCE SELECTION
IN-A 0 1 0 1 IN-B 0 0 1 1 REFERENCE SELECTED 8KHz (default) 16KHz 32KHz 64KHz
- OUTPUT...
