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參數(shù)資料
| 型號： | IDT82V3255 |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | WAN PLL |
| 中文描述： | 廣域網(wǎng)鎖相環(huán) |
| 文件頁數(shù)： | 10/127頁 |
| 文件大小： | 868K |
| 代理商： | IDT82V3255 |
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IDT82V3255
WAN PLL
Description
10
June 19, 2006
DESCRIPTION
The IDT82V3255 is an integrated, single-chip solution for the Syn-
chronous Equipment Timing Source for Stratum 3, SMC, 4E and 4
clocks in SONET / SDH equipments, DWDM and Wireless base station,
such as GSM, 3G, DSL concentrator, Router and Access Network appli-
cations.
The device supports three types of input clock sources: recovered
clock from STM-N or OC-n, PDH network synchronization timing and
external synchronization reference timing.
Based on ITU-T G.783 and Telcordia GR-253-CORE, the device con-
sists of T0 and T4 paths. The T0 path is a high quality and highly config-
urable path to provide system clock for node timing synchronization
within a SONET / SDH network. The T4 path is simpler and less config-
urable for equipment synchronization. The T4 path locks independently
from the T0 path or locks to the T0 path.
An input clock is automatically or manually selected for T0 and T4
each for DPLL locking. Both the T0 and T4 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 fre-
quency data acquired in Locked mode. Whatever the operating mode is,
the DPLL gives a stable performance without being affected by operat-
ing conditions or silicon process variations.
If the DPLL outputs are processed by T0/T4 APLL, the outputs of the
device will be in a better jitter/wander performance.
The device provides programmable DPLL bandwidths: 0.1 Hz to 560
Hz in 11 steps and damping factors: 1.2 to 20 in 5 steps. Different set-
tings cover all SONET / SDH clock synchronization requirements.
A high stable input is required for the master clock in different appli-
cations. The master clock is used as a reference clock for all the internal
circuits in the device. It can be calibrated within ±741 ppm.
All the read/write registers are accessed through a serial micropro-
cessor interface. The device supports Serial microprocessor interface
mode only.
The device can be used typically in Line Card application.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IDT82V3255DK | WAN PLL |
| IDT82V3255DKG | WAN PLL |
| IDT82V3255TF | WAN PLL |
| IDT82V3255TFG | WAN PLL |
| IDT82V3280 | WAN PLL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IDT82V3255_08 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL |
| IDT82V3255DK | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL |
| IDT82V3255DKG | 功能描述:IC PLL WAN SMC STRATUM 3 64-TQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| IDT82V3255DKG8 | 功能描述:IC PLL WAN SMC STRATUM 3 64-TQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| IDT82V3255EDGBLANK | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL |
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