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XRT95L51

更新时间： 2024-09-23 22:18:27

品牌	Logo	应用领域
艾科嘉 - EXAR		异步传输模式 ATM
页数	文件大小	规格书
8页	123K
描述
OC-48 ATM UNI/POS/MAPPER IC

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中文翻译

获取价格

数据手册

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XRT95L51 数据手册

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PRELIMINARY

XRT95L51

OC-48 ATM UNI/POS/MAPPER IC

JULY 2000

REV. P1.0.1

APPLICATIONS

GENERAL DESCRIPTION

• Digital Cross Connect Systems

• ATM Switches

The XRT95L51 is an ATM/PPP physical layer proces-

sor with integrated SONET OC-48/STM-16 framing

controller. ATM direct mapping and cell delineation

are supported, as are PPP mapping and frame pro-

cessing. The XRT95L51 contains an integral SONET

framer which provides framing and error accumula-

tion in accordance with ANSI/ITU-T specifications.

The configuration of this device is done through inter-

nal registers accessible via 8-bit parallel, memory

mapped, microprocessor interface.

• Routers

• SONET/SDH Add Drop Multiplexers

• Multiplexers

FEATURES

• Single chip for ATM UNI and Packet over SONET.

• Generates and terminates SONET section, line and

path layers.

The XRT95L51 provides full section, line and path

overhead processing and supports scrambling/de-

scrambling, alarm signal insertion/detection and bit

interleaved parity processing.

• Provides SONET frame scrambling and descram-

bling.

• Provides 32-bit data UTOPIA level II and III multi-

PHY interface and POS-PHY interface.

The SONET/SDH transmit and receive blocks are

used to transmit/receive an OC-48c/STM-16c signal

or compose and decompose four OC-12/12c sig-

nals.The blocks operate at a peak internal clock

speed of 77 MHz and support 32-bit internal data

paths. The transmit and receive blocks are compliant

with both SONET and SDH standards.

• 8-bit microprocessor interface

• Includes ATM cell or PPP packet mapping

• Single +3.3V power supply with +5V input tolerance

• -40°C to +85°C Operating Temperature Range

• Available in a 388 pin PBGA package

FIGURE 1. BLOCK DIAGRAM OF THE 95L51 OC-48 ATM UNI/POS/MAPPER IC

Overhead

Insertion Block

Tx OC-12

Mapper X4

POH Generation

& Insertion

Microprocessor Interface

7[8&ON

7[8(1%/

7[862&

7[/&ON#.20

7[/'$7$>48=3@#.20

7[/357<#.20

7[/)3#.20

Tx ATM Cell

Processor

Scrambler

POH Processor

SOH Processor

Tx Framer

7[8&/$9

7[8$''5>7=3@

7[8'$7$>64=3@

7[8357<

7[3(23

Tx Cell

Buffer

Parallel to Serial

Tx XCVR I/F

7[/567B/#.20

7[/&ON2#.20

Tx POS Cell

Processor

Tx Control

Rx Control

7[5()&ON

7[3(55

5[8&ON

5[/&ON#.20

5[/'$7$>48=3@#.20

5[/357<#.20

5[/)3#.20

5[8(1B/

5[862&

Rx POS Cell

Processor

Rx Framer

SOH Processor

POH Processor

Descrambler

Serial to Parallel

Rx XCVR I/F

5[8&/$9

5[8$''5>7=3@

5[8'$7$>64=3@

5[8357<

5[3(23

5[/&ON3#.20

5[5()&ON

Rx Cell

Buffer

Rx ATM Cell

Processor

Byte Align

/26

5[3(55

5[3'9$/

Overhead

Extraction Block

Rx OC-12

MapperX4

JTAG Test Port

POH Extract & Interpret

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7 8

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与XRT95L51相关器件

型号	品牌	获取价格	描述	数据表
XRT95L51IB	EXAR	获取价格	OC-48 ATM UNI/POS/MAPPER IC
XRT95L53	EXAR	获取价格	OC-48 ETHERNET/SONET MULTI-SERVICE FRAMER PROCESSOR
XRTA1003900AK	VISHAY	获取价格	RES,SMT,THIN FILM,390 OHMS,100WV,10% +/-TOL,1800PPM TC,0202 CASE
XRTA10082000G	VISHAY	获取价格	RES,SMT,THIN FILM,8.2K OHMS,100WV,2% +/-TOL,1800PPM TC,0202 CASE
XRTA10082000J	VISHAY	获取价格	RES,SMT,THIN FILM,8.2K OHMS,100WV,5% +/-TOL,1800PPM TC,0202 CASE
XRTA10082000K	VISHAY	获取价格	RES,SMT,THIN FILM,8.2K OHMS,100WV,10% +/-TOL,1800PPM TC,0202 CASE
XRTA1008200AG	VISHAY	获取价格	RES,SMT,THIN FILM,820 OHMS,100WV,2% +/-TOL,1800PPM TC,0202 CASE
XRTA1008200AK	VISHAY	获取价格	RES,SMT,THIN FILM,820 OHMS,100WV,10% +/-TOL,1800PPM TC,0202 CASE
XRTA30015001J	VISHAY	获取价格	RES,SMT,THIN FILM,15K OHMS,100WV,5% +/-TOL,4800PPM TC,0202 CASE
XRTA30022000G	VISHAY	获取价格	RES,SMT,THIN FILM,2.2K OHMS,100WV,2% +/-TOL,4800PPM TC,0202 CASE

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