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XRT7250IQ100 PDF预览

XRT7250IQ100

更新时间: 2024-01-23 21:11:57
品牌 Logo 应用领域
艾科嘉 - EXAR 电信集成电路
页数 文件大小 规格书
463页 5193K
描述
DS3/E3 FRAMER IC

XRT7250IQ100 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:QFP
包装说明:QFP, QFP100,.7X.9针数:100
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.92Is Samacsys:N
JESD-30 代码:R-PQFP-G100JESD-609代码:e0
长度:20 mm功能数量:1
端子数量:100最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装等效代码:QFP100,.7X.9
封装形状:RECTANGULAR封装形式:FLATPACK
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
认证状态:Not Qualified座面最大高度:3.4 mm
子类别:Digital Transmission Controllers标称供电电压:5 V
表面贴装:YES技术:CMOS
电信集成电路类型:FRAMER温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:14 mm
Base Number Matches:1

XRT7250IQ100 数据手册

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áç  
XRT7250  
DS3/E3 FRAMER IC  
MARCH 2001  
REV. 1.1.1  
GENERAL DESCRIPTION  
the local terminal equipment to receive data from re-  
mote terminal equipment.  
The XRT7250 DS3/E3 Framer IC is designed to ac-  
cept “User Data” from the Terminal Equipment and in-  
sert this data into the “payload” bit-fields within an  
“outbound” DS3/E3 Data Stream. Further, the Framer  
IC is also designed to receive an “inbound” DS3/E3  
Data Stream (from the Remote Terminal Equipment)  
and extract out the “User Data”.  
The Microprocessor Interface is used to configure the  
Framer IC in different operating modes and monitor  
the performance of the Framer.  
The Performance Monitor Section consists of a large  
number of "Reset-upon-Read" and "Read-Only" reg-  
isters that contain cumulative and "one-second" sta-  
tistics that reflect the performance/health of the Fram-  
er IC/system.  
The XRT7250 DS3/E3 Framer is designed to support  
full-duplex data flow between Terminal Equipment  
and an LIU (Line Interface Unit) IC. The Framer De-  
vice will transmit, receive and process data in the  
DS3-C-bit Parity, DS3-M13, E3-ITU-T G.751 and E3-  
ITU-T G.832 Framing Formats.  
FEATURES  
Transmits, Receives and Processes data in the  
DS3-C-bit Parity, DS3-M13, E3-ITU-T G.751 and  
E3-ITU-T G.832 Framing Formats.  
The XRT7250 DS3/E3 Framer IC consists of four sec-  
tions.  
Interfaces to all Popular Microprocessors  
Integrated Framer Performance Monitor  
Available in a 100 Pin PQFP package  
Operating Temperature -40°C to +85°C  
The Transmit Section, includes a Transmit Payload  
Data Input Interface, a Transmit Overhead data Input  
Interface Section, a Transmit HDLC Controller, a  
Transmit E3/DS3 Framer block and a Transmit LIU In-  
terface Block which permits the Terminal Equipment  
to transmit data to a remote terminal.  
APPLICATIONS  
Interface to DS3 or E3 Networks  
CSU/DSU Equipment.  
PCM Test Equipment  
Fiber Optic Terminals  
The Receive Section, consists of a Receive LIU Inter-  
face, a Receive E3/DS3 Framer, a Receive HDLC  
Controller, a Receive Payload Data Output Interface,  
and a Receive Overhead Data Interface which allows  
BLOCK DIAGRAM OF XRT7250  
TxOHFrame  
TxOHEnable  
Transmit Overhead  
Input  
Interface Block  
TxOH  
TxOHClk  
TxOHIns  
TxOHInd  
TxPOS  
TxSer  
TxNib[3:0]  
TxInClk  
Transmit  
Payload Data  
Input  
Transmit LIU  
Interface  
Block  
Transmit DS3/E3  
Framer Block  
TxNEG  
Interface Block  
TxNibClk  
TxFrame  
TxLineClk  
MOTO  
D[7:0]  
A[8:0]  
Int  
CS  
Rd_DS  
Tx LAPD Buffer/  
Controller  
Microprocessor  
Interface  
Wr_RW  
Rdy_Dtck  
Rx LAPD Buffer/  
Controller  
Reset  
ALE_AS  
RxSer  
RxNib[3:0]  
RxOutClk  
RxNibClk  
RxFrame  
RxPOS  
Receive Payload  
Data Output  
Interface Block  
Receive LIU  
Interface  
Block  
Receive DS3/E3  
Framer Block  
RxNEG  
RxLineClk  
RxOHFrame  
RxOH  
Receive Overhead  
Output  
Interface Block  
RxOHClk  
RxOHEnable  
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com  

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