IDT IDT82V3395

Dual Synchronous Ethernet Line Card
PLL
FEATURES
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HIGHLIGHTS
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Dual PLL chip:
• Provides clocks for ITU-T G.8261/G.8262 Synchronous Ethernet
(SyncE)
• Exceeds GR-253-CORE (OC-12) and ITU-T G.813 (STM-4) jitter
generation requirements
• Provides clocks for Cellular and WLL base-station (GSM and 3G
networks)
• Provides clocks for 1 Gigabit and 10 Gigabit Ethernet applications
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MAIN FEATURES
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Employs PLL architecture to feature excellent jitter performance
and minimize the number of external components
Integrates 2 DPLLs; one can be used on the transmit path and the
other on the receive path
Supports programmable DPLL bandwidth: 18 Hz, 35 Hz, 70 Hz and
560 Hz
Provides OUT1~OUT4 output clock frequencies up to 644.53125
MHz
• Includes 25MHz, 125 MHz and 156.25 MHz for CMOS outputs
• Includes 25.78125MHz, 128.90625 MHz and 161.1328125 MHz
for CMOS outputs
• Includes 25MHz, 125 MHz, 156.25 MHz, 312.5 MHz and 625
MHz for differential outputs
• Includes 25.78125 MHz, 128.90625 MHz, 161.1328125 MHz,
322.265625 MHz and 644.53125 MHz for differential outputs
Provides IN1~IN4 input clock frequencies cover from 2 kHz to
155.52MHz MHz
Product Brief
IDT82V3395
Supports Forced or Automatic operating mode switch controlled by
an internal state machine. It supports Free- Run, Locked and Holdover modes
Supports manual and automatic selected input clock switch
Supports automatic hitless selected input clock switch on clock failure
Provides a 2 kHz, 4 kHz, or 8 kHz frame sync input signal, and a 2
kHz or 8 kHz frame sync output signals
Provides a 1PPS sync input signal and a 1PPS sync output signal
Provides output clocks for BITS, GPS, 3G, GSM, etc.
Supports PECL/LVDS and CMOS input/output technologies
Supports master clock calibration
Supports Telcordia GR-1244-CORE, Telcordia GR-253-CORE,
ITU-T G.812, ITU-T G.8262. ITU-T G.813 and ITU-T G.783 Recommendations
OTHER FEATURES
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I2C and Serial microprocessor interface modes
IEEE 1149.1 JTAG Boundary Scan
Single 3.3 V operation with 5 V tolerant CMOS I/Os
72-pin QFN package, green package options available
APPLICATIONS
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1 Gigabit Ethernet and 10 Gigabit Ethernet
BITS / SSU
SMC / SEC (SONET / SDH)
DWDM cross-connect and transmission equipment
Synchronous Ethernet equipment
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 equipment
Cellular and WLL base-station node clocks
Broadband and multi-service access equipment
IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
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 2012 Integrated Device Technology, Inc.
March 5, 2012
DSC-7238/-
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
DESCRIPTION
The device provides programmable DPLL bandwidths: 18 Hz, 35 Hz,
70 Hz and 560 Hz.
The IDT82V3395 is an integrated, single-chip solution for the Synchronous Equipment Timing applications in SONET / SDH / Synchronous Ethernet equipment, DWDM and Wireless base station.
A stable input is required for the master clock in different applications. The master clock is used as a reference clock for all the internal
circuits in the device.
The device supports several types of input clock sources: recovered
clock from Synchronous Ethernet, STM-N or OC-n, PDH network synchronization timing.
All the read/write registers are accessed through a microprocessor
interface. The device supports I2C and serial microprocessor interface
modes.
The device consists of 2 DPLL+APLL paths. The two path lock independently from each other.
An input clock is automatically or manually selected for both path.
Both paths support three primary operating modes: Free-Run, Locked
and Holdover. In Free-Run mode, the DPLL refers to the master clock.
In Locked mode, the DPLL locks to the selected input clock. In Holdover
mode, the DPLL resorts to the frequency data acquired in Locked mode.
Whatever the operating mode is, the DPLL gives a stable performance
without being affected by operating conditions or silicon process variations.
There are 2 high performance APLLs that can be used for low jitter
SONET and Ethernet Clocks
Description
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March 5, 2012
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
FUNCTIONAL BLOCK DIAGRAM
Input
Selector
APLL
MUX
DPLL1
Input Pre-Divider
IN3
IN4
Input Pre-Divider
EX_SYNC1
EX_SYNC2
Divider
OUT1
OUT2
MUX
Divider
OUT2
OUT3
MUX
Divider
OUT3_POS
OUT3_NEG
OUT4
MUX
Divider
OUT4_POS
OUT4_NEG
Auto
Divider
FRSYNC_8K_1PPS
Auto
Divider
MFRSYNC_2K_1PPS
APLL1
Input
IN1
IN2
OUT1
MUX
Input Pre-Divider
Input Pre-Divider
Monitors
Selection
Input
Selector
APLL
MUX
DPLL2
APLL2
Microprocessor Interface
APLL
Output
JTAG
OSCI
Figure 1. Functional Block Diagram
Functional Block Diagram
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March 5, 2012
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
ORDERING INFORMATION
XXXXXXX
XX
X
Process/
Temperature
Range
Device Type
Blank
Industrial (-40°C to +85°C)
NLG
Green Quad Flatpack, No Lead (VFQFP-N, NLG72)
82V3395B WAN PLL
REVISION HISTORY
March 5, 2012
Initial Version
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the infringement
of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial
applications. Any other applications, such as those requiring high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT
reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.
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March 5, 2012
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
We’ve Got Your Timing Solution
6024 Silver Creek Valley Road
San Jose, California 95138
Sales
800-345-7015 (inside USA)
+408-284-8200 (outside USA)
Fax: 408-284-2775
www.IDT.com/go/contactIDT
Technical Support
[email protected]
+480-763-2056
DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state
and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not
limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and
does not convey any license under intellectual property rights of IDT or any third parties.
IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using
an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.
Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective
third party owners.
Copyright 2012. All rights reserved.
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March 5, 2012