DS2196 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS2196

T1 Dual Framer LIU

Dallas Semiconductor -> Maxim Integrated 

www.dalsemi.com

FEATURES

• Two full featured framers and a short / long

haul Line Interface Unit (LIU) in one small

package

• Based on Dallas Semiconductor’s Single-

Chip Transceiver family

• Two HDLC Controllers with 64-byte buffers

that can be used for the FDL or for DS0

channels

• Supports NPRMs and SPRMs as per ANSI

T1.403-1998

• Can be combined with a short/long haul LIU

or a HDSL Modem Chip Set to create a low

cost Office Repeater / NIU / CSU, or a

HDSL1 / HDSL2 terminal unit with

enhanced monitoring and Data Link Control

• Supports fractional T1

• Can convert from D4 to ESF framing and

ESF to D4 framing

• 32–bit or 128–bit crystal–less jitter attenuator

• Can generate and detect repeating in-band

patterns from 1 to 8 bits or 16 bits in length

• Detects and generates RAI-CI and AIS-CI

• Generates DS1 idle codes

• On-chip programmable BERT generator and

detector

• All key signals are routed to pins to support

numerous hardware configurations

DS2196

T1 Dual Framer LIU

• Supports both NRZ and bipolar interfaces

• Can create errors in the F-bit position and

BERT interface data paths

• 8–bit parallel control port that can be used

directly on either multiplexed or non-

multiplexed buses (Intel or Motorola)

• IEEE 1149.1 JTAG Boundary Scan

• 3.3V supply with 5V tolerant inputs &

outputs

• 100-Pin LQFP (14 mm x 14 mm) Package

PACKAGE OUTLINE

100

1

ORDERING INFORMATION

DS2196L (0ºC to +70ºC)

DS2196LN (–40ºC to +85ºC)

DESCRIPTION

The DS2196 T1 Dual Framer LIU is designed for T1 transmission equipment. The DS2196 combines

dual optimized framers together with a line interface unit. This combination allows the DS2196 user to

extract and insert Facility Data Link (FDL) messages in the receive and transmit paths, collect line

performance data and perform basic channel conditioning and maintenance. The DS2196 contains all of

the necessary functions for connection to T1 lines whether they are DS1 long haul or DSX–1 short haul.

The clock recovery circuitry automatically adjusts to T1 lines from 0 feet to over 6000 feet in length. The

device can generate both DSX–1 line build outs as well as CSU line build outs of –7.5 dB, –15 dB, and

-22.5 dB. The onboard jitter attenuator (selectable to either 32 bits or 128 bits) can be placed in either the

transmit or receive data paths. The framer locates the frame and multiframe boundaries and monitors the

data stream for alarms. The device contains a set of internal registers which the user can access and

control the operation of the unit. Quick access via the parallel control port allows a single controller to

handle many T1 lines. The device fully meets all of the latest T1 specifications.

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