ITU-T G.812, ITU-T G.8262. ITU-T G.813 and ITU-T G.783 Recom-
mendations
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
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
OTHER FEATURES
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APPLICATIONS
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IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
1
2012 Integrated Device Technology, Inc.
March 5, 2012
DSC-7238/-
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
DESCRIPTION
The IDT82V3395 is an integrated, single-chip solution for the Syn-
chronous Equipment Timing applications in SONET / SDH / Synchro-
nous Ethernet equipment, DWDM and Wireless base station.
The device supports several types of input clock sources: recovered
clock from Synchronous Ethernet, STM-N or OC-n, PDH network syn-
chronization timing.
The device consists of 2 DPLL+APLL paths. The two path lock inde-
pendently 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 varia-
tions.
There are 2 high performance APLLs that can be used for low jitter
SONET and Ethernet Clocks
The device provides programmable DPLL bandwidths: 18 Hz, 35 Hz,
70 Hz and 560 Hz.
A stable input is required for the master clock in different applica-
tions. The master clock is used as a reference clock for all the internal
circuits in the device.
All the read/write registers are accessed through a microprocessor
interface. The device supports I2C and serial microprocessor interface
modes.
Description
2
March 5, 2012
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
FUNCTIONAL BLOCK DIAGRAM
OUT1
MUX
Input
Selector
DPLL1
APLL
MUX
APLL1
Divider
OUT1
Input
IN1
IN2
IN3
IN4
EX_SYNC1
EX_SYNC2
Input Pre-Divider
Input Pre-Divider
Input Pre-Divider
Input Pre-Divider
Selection
OUT2
MUX
Divider
OUT2
Monitors
OUT3
MUX
Divider
OUT3_POS
OUT3_NEG
Input
Selector
DPLL2
APLL
MUX
APLL2
OUT4
MUX
Divider
OUT4_POS
OUT4_NEG
Auto
Divider
Microprocessor Interface
APLL
JTAG
Auto
Divider
FRSYNC_8K_1PPS
MFRSYNC_2K_1PPS
Output
OSCI
Figure 1. Functional Block Diagram
Functional Block Diagram
3
March 5, 2012
IDT82V3395 PRODUCT BRIEF
DUAL SYNCHRONOUS ETHERNET LINE CARD PLL
ORDERING INFORMATION
XXXXXXX
Device Type
XX
X
Process/
Temperature
Range
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.
4
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
netcom@idt.com
+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 doc-
ument, 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
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