DS21Q44TN

更新时间： 2024-10-27 22:10:55

品牌	Logo	应用领域
达拉斯 - DALLAS		数字传输控制器电信集成电路电信电路
页数	文件大小	规格书
105页	617K
描述
Enhanced QUAD E1 FRAMER

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技术参数
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DS21Q44TN 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	TQFP-128	Reach Compliance Code：	unknown
风险等级：	5.75	JESD-30 代码：	R-PQFP-G128
JESD-609代码：	e0	功能数量：	4
端子数量：	128	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：	QFP128,.63X.87
封装形状：	RECTANGULAR	封装形式：	FLATPACK
电源：	3.3 V	认证状态：	Not Qualified
子类别：	Digital Transmission Controllers	标称供电电压：	3.3 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：	0.635 mm	端子位置：	QUAD
Base Number Matches：	1

DS21Q44TN 数据手册

DS21Q44

Enhanced QUAD E1 FRAMER

www.dalsemi.com

FEATURES

FUNCTIONAL DIAGRAM

ꢀ Four E1 (CEPT or PCM-30) /ISDN-PRI

framing transceivers

ꢀ All four framers are fully independent;

transmit and receive sections of each framer

are fully independent

Elastic

Store

Receive

Framer

Elastic

Store

Transmit

Formatter

ꢀ

Frames to FAS, CAS, CCS, and CRC4 formats

FRAMER #0

FRAMER #1

FRAMER #2

FRAMER #3

ꢀ Each of the four framers contain dual two–

frame elastic store slip buffers that can

connect to asynchronous backplanes up to

8.192 MHz

Control Port

ꢀ 8–bit parallel control port that can be used

directly on either multiplexed or non–

multiplexed buses (Intel or Motorola)

ꢀ Easy access to Si and Sa bits

ꢀ Extracts and inserts CAS signaling

ꢀ Large counters for bipolar and code

violations, CRC4 code word errors, FAS

word errors, and E-bits

ACTUAL SIZE

QUAD

FRAMER

ꢀ Programmable output clocks for Fractional

E1, per channel loopback, H0 and H12

applications

ORDERING INFORMATION

DS21Q44T (0⁰C to 70⁰C)

ꢀ

Integral HDLC controller with 64-byte buffers

configurable for Sa bits or DS0 operation

DS21Q44TN

(-40⁰C to +85⁰C)

ꢀ Detects and generates AIS, remote alarm,

and remote multiframe alarms

ꢀ Pin compatible with DS21Q42 Enhanced

Quad T1 Framer

ꢀ 3.3V supply with 5V tolerant I/O; low power

CMOS

ꢀ Available in 128–pin TQFP package

ꢀ IEEE 1149.1 support

DESCRIPTION

The DS21Q44 E1 is an enhanced version of the DS21Q43 Quad E1 Framer. The DS21Q44 contains four

framers that are configured and read through a common microprocessor compatible parallel port. Each

framer consists of a receive framer, receive elastic store, transmit formatter and transmit elastic store. All

four framers in the DS21Q44 are totally independent, they do not share a common framing synchronizer.

Also the transmit and receive sides of each framer are totally independent. The dual two-frame elastic

stores contained in each of the four framers can be independently enabled and disabled as required. The

device fully meets all of the latest E1 specifications including CCITT/ITU G.704, G.706, G.962, and

I.431 as well as ETS 300 011 and ETS 300 233.

1 of 105

031600

12 3 4 5 6 7...105

中文翻译

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与DS21Q44TN相关器件

型号	品牌	获取价格	描述	数据表
DS21Q44TN+	MAXIM	获取价格	Framer, CMOS, PQFP128, ROHS COMPLIANT, TQFP-128
DS21Q48	DALLAS	获取价格	5V E1/T1/J1 Line Interface
DS21Q48	ROCHESTER	获取价格	DATACOM, PCM TRANSCEIVER, PBGA144, 17 X 17 MM, CSBGA-144
DS21Q48C	MAXIM	获取价格	Digital Transmission Interface, PBGA144
DS21Q48N	DALLAS	获取价格	5V E1/T1/J1 Line Interface
DS21Q50	MAXIM	获取价格	Quad E1 Transceiver
DS21Q50L	MAXIM	获取价格	Quad E1 Transceiver
DS21Q50L+	MAXIM	获取价格	PCM Transceiver, 1-Func, CEPT PCM-30/E-1, CMOS, PQFP100, 14 X 14 MM, LQFP-100
DS21Q50L-C01	MAXIM	获取价格	PCM Transceiver, 1-Func, CMOS, PQFP100, 14 X 14 MM, LQFP-100
DS21Q50L-C02	MAXIM	获取价格	PCM Transceiver, 1-Func, CMOS, PQFP100, 14 X 14 MM, LQFP-100

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