WAN PLL
IDT82V3280
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Supports automatic hitless selected input clock switch on clock fail-
ure
Supports three types of input clock sources: recovered clock from
STM-N or OC-n, PDH network synchronization timing and external
synchronization reference timing
FEATURES
HIGHLIGHTS
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The first single PLL chip:
• Features 0.5 mHz to 560 Hz bandwidth
• Exceeds GR-253-CORE (OC-12) and ITU-T G.813 (STM-16/
Option I) jitter generation requirements
• Provides node clocks for Cellular and WLL base-station (GSM
and 3G networks)
• Provides clocks for DSL access concentrators (DSLAM), espe-
cially for Japan TCM-ISDN network timing based ADSL equip-
ments
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Provides a 2 kHz, 4 kHz or 8 kHz frame sync input signal, and a 2
kHz and an 8 kHz frame sync output signals
Provides 14 input clocks whose frequency cover from 2 kHz to
622.08 MHz
Provides 9 output clocks whose frequency cover from 1 Hz to
622.08 MHz
Provides output clocks for BITS, GPS, 3G, GSM, etc.
Supports AMI, PECL/LVDS and CMOS input/output technologies
Supports master clock calibration
Supports Master/Slave application (two chips used together) to
enable system protection against single chip failure
Meets Telcordia GR-1244-CORE, GR-253-CORE, GR-1377-
CORE, ITU-T G.812, ITU-T G.813 and ITU-T G.783 criteria
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MAIN FEATURES
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Provides an integrated single-chip solution for Synchronous Equip-
ment Timing Source, including Stratum 2, 3E, 3, SMC, 4E and 4
clocks
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Employs DPLL and APLL to feature excellent jitter performance
and minimize the number of the external components
Integrates T0 DPLL and T4 DPLL; T4 DPLL locks independently or
locks to T0 DPLL
Supports Forced or Automatic operating mode switch controlled by
an internal state machine; the primary operating modes are Free-
Run, Locked and Holdover
OTHER FEATURES
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Multiple microprocessor interface modes: EPROM, Multiplexed,
Intel, Motorola and Serial
IEEE 1149.1 JTAG Boundary Scan
Single 3.3 V operation with 5 V tolerant CMOS I/Os
100-pin TQFP package, Green package options available
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Supports programmable DPLL bandwidth (0.5 mHz to 560 Hz in 19
steps) and damping factor (1.2 to 20 in 5 steps)
APPLICATIONS
-5
-8
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Supports 1.1X10 ppm absolute holdover accuracy and 4.4X10
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BITS / SSU
SMC / SEC (SONET / SDH)
ppm instantaneous holdover accuracy
Supports PBO to minimize phase transients on T0 DPLL output to
be no more than 0.61 ns
Supports phase absorption when phase-time changes on T0
selected input clock are greater than a programmable limit over an
interval of less than 0.1 seconds
Supports programmable input-to-output phase offset adjustment
Limits the phase and frequency offset of the outputs
Supports manual and automatic selected input clock switch
DWDM cross-connect and transmission equipments
Central Office Timing Source and Distribution
Core and access IP switches / routers
Gigabit and Terabit IP switches / routers
IP and ATM core switches and access equipments
Cellular and WLL base-station node clocks
Broadband and multi-service access equipments
Any other telecom equipments that need synchronous equipment
system timing
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IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
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March 02, 2009
2008 Integrated Device Technology, Inc.
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