Datasheet > DS21458LDK

DS21458LDK

更新时间： 2024-09-26 19:53:31

品牌	Logo	应用领域
美信 - MAXIM		电信电信集成电路
页数	文件大小	规格书
87页	380K
描述
Framer

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技术参数
数据手册

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DS21458LDK 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.74	峰值回流温度（摄氏度）：	NOT SPECIFIED
电信集成电路类型：	FRAMER	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

DS21458LDK 数据手册

DS21FT40

Four x Three 12 Channel E1 Framer

www.dalsemi.com

MULTI-CHIP MODULE FEATURES

FUNCTIONAL DIAGRAM

•

Twelve (12) completely independent

E1 Framers in one small 27 mm x 27 mm

Package

Each Multi-Chip Module (MCM) Contains

Three DS21Q44 Quad E1 Framer Die

Each Quad Framer can be concatenated into

a Single 8.192 MHz Backplane Data Stream

300–pin MCM 1.27 mm pitch BGA package

(27 mm X 27 mm)

Elastic

Store

Receive

Framer

Elastic

Store

Transmit

Formatter

•

FRAMER #1

FRAMER #2

FRAMER #3

ρρρ

FRAMER #12

Control Port

Low Power 3.3V CMOS with 5V Tolerant

Input & Outputs

•

Large counters for bipolar and code

violations, CRC4 code word errors, FAS

word errors, and E-bits

Programmable output clocks for Fractional

E1, per channel loopback, H0 and H12

applications

Integral HDLC controller with 64-byte

buffers. Configurable for Sa bits or DS0

operation

Detects and generates AIS, remote alarm,

and remote multiframe alarms

IEEE 1149.1 support

FRAMER FEATURES

•

All framers are fully independent; transmit

and receive sections of each framer are fully

independent

•

Frames to FAS, CAS, CCS, and CRC4

formats

Each framer contains dual two–frame elastic

store slip buffers that can connect to

asynchronous backplanes up to 8.192 MHz

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

DESCRIPTION

The DS21FT40 MCM offers a high density packaging arrangement for the DS21Q44 E1 Enhanced Quad

Framer. Three DS21Q44 silicon die are packaged in a Multi-Chip Module (MCM) with the electrical

connections as shown in Figure 1-1. The DS21FT40 is closely related to the DS21FT44. Most of the

functions of the DS21FT44 are available on the DS21FT40. The differences are listed in Table 1-1.

Table 2-1 lists all of the signals on the MCM.

The DS21Q44 E1 Framer is an enhanced version of the DS21Q43 Quad E1 Framer. Each DS21Q44 die

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

1 of 87

041400

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中文翻译

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与DS21458LDK相关器件

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DS21458N	DALLAS	获取价格	Quad T1/E1/J1 Transceivers
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DS2148	DALLAS	获取价格	5V E1/T1/J1 Line Interface
DS2148G	DALLAS	获取价格	5V E1/T1/J1 Line Interface

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