1 march 5, 2012 product brief idt82v3395 ? 2012 integrated device technology, inc. dsc-7238/- dual synchronous ethernet line card pll idt and the idt logo are trademarks of integrated device technology, inc. features highlights ? 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 applica- tions main features ? employs pll architecture to fe ature 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 ? supports forced or automatic operating mode switch controlled by an internal state machine. it supp orts free- run, locked and hold- over modes ? supports manual and automatic selected input clock switch ? supports automatic hitless selected input clock switch on clock fail- ure ? 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 recom- mendations other features ? 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 ? 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
idt82v3395 product brief dual sync hronous ethernet line card pll description 2 march 5, 2012 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, t he 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 dp ll 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.
idt82v3395 product brief dual sync hronous ethernet line card pll functional block diagram 3 march 5, 2012 functional block diagram figure 1. functional block diagram ex_sync1 monitors dpll1 apll microprocessor interface jtag out3 mux out4 mux divider out2 out2 mux divider out1 out1 mux apll mux apll mux input selector input selector osci auto divider input in1 in2 in3 in4 frsync_8k_1pps output input pre-divider input pre-divider input pre-divider input pre-divider divider divider apll2 apll1 dpll2 out3_pos out3_neg out4_pos out4_neg ex_sync2 auto divider mfrsync_2k_1pps selection
idt82v3395 product brief dual synchronous ethernet line card pll 4 march 5, 2012 ordering information revision history march 5, 2012 initial version xxxxxxx xx x device type blank 82v3395b wan pll nlg green quad flatpack, no lead (vfqfp-n, nlg72) process/ temperature range industrial (-40c to +85c) while the information presented herein has been checked for both accuracy and reliability, integrated device technology (idt) a ssumes no responsibility for either its use or for the infringement of any patents or other rights of third pa rties, which would result from its use. no other circuits, patent s, or licenses are i mplied. this product is intended for use in normal commerc ial and industrial applications. any other applications, such as those requiring hi gh reliability or other extrao rdinary environmental requirement s are not recommended without additional processing by idt. idt reserves the right to change any circuitry or specifications wi thout notice. idt does not author ize or warrant any idt product for use in life support devices or critical medical instruments.
idt82v3395 product brief dual sync hronous ethernet line card pll 5 march 5, 2012 disclaimer integrated device technology, inc. (idt) and its subs idiaries reserve the right to modify the products and/or specif ications described herein at any time and at id t?s sole discretion. all information in this doc- ument, including descriptions of product feat ures and performance, is subject to cha nge without notice. performance specificati ons 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 provide d without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of idt?s produc ts for any particular purpose, an implie d warranty of merchantability, or non-infrin gement 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 p roduct can be reasonably expected to significantly af fect 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 he rein, including protected names, logos and designs, are the property of idt or their respective third party owners. copyright 2012. all rights reserved. 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 we?ve got your timing solution
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