DS2182N Просмотр технического описания (PDF) - Maxim Integrated

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DS2182N

T1 Line Monitor Chip

Maxim Integrated 

www.maxim-ic.com

GENERAL DESCRIPTION

The DS2182A T1 line monitor chip is a monolithic

CMOS device designed to monitor real-time

performance on T1 lines. The DS2182A frames to

the data on the line, counts errors, and supplies

detailed information about the status and condition of

the line. Large on-board counters allow the

accumulation of errors for extended periods, which

permits a single CPU to monitor many T1 lines.

Output clocks that are synchronized to the incoming

data stream are provided for easy extraction of

S-bits, FDL bits, signaling bits, and channel data. The

DS2182A meets the requirements of ANSI T1.231.

ORDERING INFORMATION

PART

DS2182

DS2182N

DS2182Q

DS2182QN

TEMP RANGE

0°C to +70°C

-40°C to +85°C

0°C to +70°C

-40°C to +85°C

PIN-PACKAGE

28 DIP

28 DIP

28 PLCC

28 PLCC

PIN CONFIGURATION

TOP VIEW INT

SDI

SDO

CS

SCLK

N.C.

RYEL

RLINK

RLCLK

RCLK

RCHCLK

RSER

N.C.

VSS

1

28

2 DS2182A 27

3

26

4

25

5

24

6

23

7

22

8

21

9

20

10

19

11

18

12

17

13

16

14

15

DIP (600 mil)

VDD

RLOS

RFER

RBV

RCL

RNEG

RPOS

RST

TEST

RSIGSEL

RSIGFR

RABCD

RMSYNC

RFSYNC

DS2182A

T1 Line Monitor Chip

FEATURES

§ Performs Framing and Monitoring Functions

§ Supports Superframe and Extended Superframe

Formats

§ Four On-Board Error Counters:

16-Bit Bipolar Violation

8-Bit CRC

8-Bit OOF

8-Bit Frame Bit Error

§ Indication of the Following:

Yellow and Blue Alarms

Incoming B8ZS Codewords

8 and 16 Zero Strings

Change-of-Frame Alignment

Loss of Sync

Carrier Loss

§ Simple Serial Interface Used for Configuration,

Control, and Status Monitoring

§ Burst Mode Allows Quick Access to Counters for

Status Updates

§ Automatic Counter Reset Feature

§ Single 5V Supply; Low-Power CMOS

Technology

§ Available in 28-Pin DIP and 28-Pin PLCC

§ Upward-Compatible from the Original DS2182

The DS2182A includes the following changes from

the original DS2182:

§ Ability to Count Excessive Zeros

§ Severely Errored-Framing-Event Indication

§ Updated AIS Detection

§ Updated RCL Detection

§ AIS and RCL Alarm Clear Indications

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: 120103

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