DS21458

更新时间： 2024-09-25 22:50:47

品牌	Logo	应用领域
达拉斯 - DALLAS		/
页数	文件大小	规格书
270页	1606K
描述
Quad T1/E1/J1 Transceivers

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DS21458 数据手册

DS21455/DS21458

Quad T1/E1/J1 Transceivers

www.maxim-ic.com

GENERAL DESCRIPTION

FEATURES

The DS21455 and DS21458 are quad monolithic

devices featuring independent transceivers that

can be software configured for T1, E1, or J1

operation. Each is composed of a line interface

unit (LIU), framer, HDLC controllers, and a

TDM backplane interface, and is controlled via

an 8-bit parallel port configured for Intel or

Motorola bus operations. The DS21455* is a

direct replacement for the older DS21Q55 quad

MCM device. The DS21458, in a smaller

package (17mm CSBGA) and featuring an

improved controller interface, is software

compatible with the older DS21Q55.

Four Independent Transceivers, Each Having

the Following Features:

CꢀComplete T1 (DS1)/ISDN-PRI/J1

Transceiver Functionality

CꢀComplete E1 (CEPT) PCM-30/ISDN-

PRI Transceiver Functionality

CꢀShort- and Long-Haul Line Interface for

Clock/Data Recovery and Waveshaping

CꢀCMI Coder/Decoder

CꢀCrystal-Less Jitter Attenuator

CꢀFully Independent Transmit and Receive

Functionality

CꢀDual HDLC Controllers

CꢀOn-Chip Programmable BERT Generator

and Detector

*The JTAG function on the DS21455/DS21458 is a single

controller for all four transceivers, unlike the DS21Q55, which has

a JTAG controller-per-transceiver architecture.

CꢀInternal Software-Selectable Receive-

and Transmit-Side Termination Resistors

for 75Ω/100Ω/120Ω T1 and E1

Interfaces

APPLICATIONS

Routers

CꢀDual Two-Frame Elastic-Store Slip

Buffers that can Connect to

Channel Service Units (CSUs)

Data Service Units (DSUs)

Muxes

Asynchronous Backplanes Up to

16.384MHz

Switches

Cꢀ16.384MHz, 8.192MHz, 4.096MHz, or

2.048MHz Clock Output Synthesized to

Recovered Network Clock

Channel Banks

T1/E1 Test Equipment

CꢀProgrammable Output Clocks for

Fractional T1, E1, H0, and H12

Applications

ORDERING INFORMATION

PART

DS21455

DS21455N

DS21458

DS21458N

TEMP RANGE PIN-PACKAGE

CꢀInterleaving PCM Bus Operation

Cꢀ8-Bit Parallel Control Port, Multiplexed

or Nonmultiplexed, Intel or Motorola

CꢀIEEE 1149.1 JTAG-Boundary Scan

Cꢀ3.3V Supply with 5V Tolerant Inputs and

Outputs

256 BGA

0°C to +70°C

(27mm x 27mm)

256 BGA

-40°C to +85°C

(27mm x 27mm)

256 CSBGA

0°C to +70°C

(17mm x 17mm)

256 CSBGA

-40°C to +85°C

CꢀDS21455 Directly Replaces DS21Q55

CꢀSignaling System 7 (SS7) Support

CꢀRAI-CI, AIS-CI Support

(17mm x 17mm)

DALLAS is a registered trademark of Dallas Semiconductor Corp.

MAXIM is a registered trademark of Maxim Integrated Products, Inc.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

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REV: 040804

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与DS21458相关器件

型号	品牌	获取价格	描述	数据表
DS21458LDK	MAXIM	获取价格	Framer
DS21458N	DALLAS	获取价格	Quad T1/E1/J1 Transceivers
DS2145N	ETC	获取价格	Telecommunication IC
DS2145Q	ETC	获取价格	Telecommunication IC
DS2145QN	ETC	获取价格	Telecommunication IC
DS2146	ETC	获取价格	Telecommunication IC
DS2146N	ETC	获取价格	Telecommunication IC
DS2146Q	ETC	获取价格	Telecommunication IC
DS2146QN	ETC	获取价格	Telecommunication IC
DS2148	DALLAS	获取价格	5V E1/T1/J1 Line Interface

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