ADVANCED COMMUNICATIONS
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Revision 3/November 2006 Semtech Corp.
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ACS8946 JAM PLL
CML
Current Mode Logic
CMU
Clock Multiplier Unit
ESD
Electrostatic Discharge
ESR
Effective Series Resistance
HBM
Human Body Model
I/O
Input - Output
JAM PLL
Jitter Attenuating, Multiplying Phase
Locked Loop
GbE
Gigabit Ethernet
JAM PLL
Jitter Attenuating, Multiplying PLL
LC/P
Line Card Protection
LDO
Low Voltage Drop-out
LVDS
Low Voltage Differential Signal
LVPECL
Low Voltage (3.3 V) PECL
OC-3/12/48
Optical Carrier Signal Level 3/12/48
155.52 Mbps/ 622.08 Mbps/
2.488 Gbps
PECL
Positive Emitter Coupled Logic
PFD
Phase and Frequency Detector
PLL
Phase Locked Loop
POR
Power-On Reset
p-p
peak-to-peak
rms
root-mean-square
RoHS
Restrictive Use of Certain Hazardous
Substances (directive)
SDH
Synchronous Digital Hierarchy
SEC
SDH/SONET Equipment Clock
SETS
Synchronous Equipment Timing source
SONET
Synchronous Optical Network
STM-1/4/16
Synchronous Transport Module Levels
1/4/16: 155.52 Mbps/ 622.08 Mbps
2.488 Gbps (SDH)
STS-12/48
Synchronous Transport Signal Level:
12/48, 622.08 Mbps/2.488 Gbps
(SONET)
UI
Unit Interval
uP (
P)
Microprocessor
VCO
Voltage Controlled Oscillator
WEEE
Waste Electrical and Electronic
Equipment (directive)
[1] EN 300 462-7-1 v1.1.2 (06/2001)
Transmission and Multiplexing (TM); Generic
requirements for synchronization networks; Part 7-1:
Timing characteristics of slave clocks suitable for
synchronization supply to equipment in local node
applications
[2] ETSI EN 302 084 V1.1.1 (2000-02)
Transmission and Multiplexing (TM); The control of jitter
and wander in transport networks
[3] ITU-T G.812 (06/1998)
Timing requirements of slave clocks suitable for use as
node clocks in synchronization networks
[4] ITU-T G.813 (08/1996)
Timing characteristics of SDH equipment slave clocks
(SEC)
[5] ITU-T G.823 (03/2000)
The control of jitter and wander within digital networks
which are based on the 2048 kbit/s hierarchy
[6] ITU-T G.824 (03/2000)
The control of jitter and wander within digital networks
which are based on the 1544 kbit/s hierarchy
[7] ITU-T G.825 (03/2000)
The control of jitter and wander within digital networks
which are based on the Synchronous Digital Hierarchy
(SDH)
[8] Telcordia GR-253-CORE, Issue 3 (09/ 2000)
Synchronous Optical Network (SONET) Transport
Systems: Common Generic Criteria
[9] Telcordia GR-499-CORE, Issue 2 (12/1998)
Transport Systems Generic Requirements (TSGR)
Common requirements
[10] Telcordia GR-1244-CORE, Issue 2 (12/2000)
Clocks for the Synchronized Network: Common Generic
Criteria
[11] RoHS Directive 2002/95/EC: Directive 2002/95/EC
of the European Parliament and of the Council of 27
January 2003 on the restriction of the use of certain
hazardous substances in electrical and electronic
equipment
[12] Waste Electrical and Electronic Equipment (WEEE)
Directive (2002/96/EC): Directive 2002/96/EC of the
European Parliament and of the Council of 27 January
2003 on waste electrical and electronic equipment
(WEEE)
Abbreviations
References and Related Standards