DS21458LDK Maxim Integrated, DS21458LDK Datasheet

DS21458LDK

Manufacturer Part Number

DS21458LDK

Description

Network Controller & Processor ICs

Manufacturer

Maxim Integrated

Datasheet

1.DS21458LDK.pdf (269 pages)

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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.

GENERAL DESCRIPTION

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.

*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.

APPLICATIONS

Routers

Channel Service Units (CSUs)

Data Service Units (DSUs)

Muxes

Switches

Channel Banks

T1/E1 Test Equipment

ORDERING INFORMATION

+ Denotes a lead(Pb)-free/RoHS-compliant package.

www.maxim-ic.com

DS21455

DS21455+

DS21455N

DS21455N+

DS21458

DS21458+

DS21458N

DS21458N+

PART

TEMP RANGE

-40°C to +85°C

0°C to +70°C

PIN-PACKAGE

256 BGA

(27mm x 27mm)

256 BGA

(27mm x 27mm)

256 BGA

(27mm x 27mm)

256 BGA

(27mm x 27mm)

256 CSBGA

(17mm x 17mm)

256 CSBGA

(17mm x 17mm)

256 CSBGA

(17mm x 17mm)

256 CSBGA

(17mm x 17mm)

1 of 269

Quad T1/E1/J1 Transceivers

FEATURES

Four Independent Transceivers, Each Having the

Following Features:



Complete T1 (DS1)/ISDN-PRI/J1 Transceiver

Functionality

Complete E1 (CEPT) PCM-30/ISDN-PRI

Transceiver Functionality

Short- and Long-Haul Line Interface for

Clock/Data Recovery and Waveshaping

CMI Coder/Decoder

Crystal-Less Jitter Attenuator

Fully Independent Transmit and Receive

Functionality

Dual HDLC Controllers

On-Chip Programmable BERT Generator and

Detector

Internal Software-Selectable Receive- and

Transmit-Side Termination Resistors for

75Ω/100Ω/120Ω T1 and E1 Interfaces

Dual Two-Frame Elastic-Store Slip Buffers that

can Connect to Asynchronous Backplanes Up to

16.384MHz

16.384MHz, 8.192MHz, 4.096MHz, or

2.048MHz Clock Output Synthesized to

Recovered Network Clock

Programmable Output Clocks for Fractional T1,

E1, H0, and H12 Applications

Interleaving PCM Bus Operation

8-Bit Parallel Control Port, Multiplexed or

Nonmultiplexed, Intel or Motorola

IEEE 1149.1 JTAG-Boundary Scan

3.3V Supply with 5V Tolerant Inputs and

Outputs

DS21455 Directly Replaces DS21Q55

Signaling System 7 (SS7) Support

RAI-CI, AIS-CI Support

DS21455/DS21458

REV: 051507

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