DS21Q55, DS21Q55N
Quad T1/E1/J1 Transceiver
Status
Active: In Production.
Description
The DS21Q55 is a quad software-selectable T1, E1,
or J1 MCM device for short-haul and long-haul
applications. Each port is composed of a line
interface unit (LIU), framer, HDLC controllers, and a
TDM backplane interface, and is controlled by an
8-bit parallel port configured for Intel or Motorola
bus operations. The DS21Q55 is software compatible
with the DS2155 single-chip transceiver. It is pin
compatible with the DS21Qx5y family of products.
An evaluation kit is available:
DS21Q55DK
Key Features
Applications/Uses
Complete T1/DS1/ISDN-PRI/J1 Transceiver
Functionality
Complete E1 (CEPT) PCM-30/ISDN-PRI
Transceiver Functionality
Long-Haul and Short-Haul Line Interface for
Clock/Data Recovery and Waveshaping
CMI Coder/Decoder for Optical I/F
Crystal-Less Jitter Attenuator
Fully Independent Transmit and Receive
Functionality
Dual HDLC Controllers
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
Connect to Asynchronous Backplanes Up to
16.384MHz
16.384MHz, 8.192MHz, 4.096MHz, or
2.048MHz Clock Output Synthesized to
Recovered Network Clock
Diagram
Block Diagram
Application Notes
Application Note 319: DS2152, DS2154, DS21x5Y, and DS2155 Interfacing to the MC68360 (QUICC32) - DS21Q55 Application Note 336: Transparent Operation on T1, E1 Framers and Transceivers - DS21Q55, DS21Q55 Application Note 340: DS2153 Programming, ETS 300-011 Remote Alarm Generation - DS21Q55 Application Note 345: DS21352/552, DS2151, DS2152, DS2141A, DS21Q42 Programming SLC-96 - DS21Q55 Application Note 351: T1/E1 and T3/E3 Transformer Selection Guide - DS21Q55 Application Note 374: DS2155 vs. DS21x5y: Software and Hardware Considerations
- DS21Q55 Application Note 382: J1 Japanese Standards - DS21Q55 Application Note 389: DS2155 Internal BERT Programming - DS21Q55 Application Note 390: DS31256 and T1/E1 Interface - DS21Q55 Application Note 391: NRZ Applications - DS21Q55 Application Note 394: HDLC Configuration of Framers and Transceivers - DS21Q55 Application Note 396: Design Migration from DS21Q55 to DS21Q50 or DS21Q59 - DS21Q55 Application Note 397: Pulse Template Measurement - DS21Q55 Application Note 400: DS2155 Monitor Mode Design - DS21Q55 Application Note 401: Extended System Information Bus (ESIB) Control Application - DS21Q55 Application Note 403: DS2155 and DS26401 Software Comparison - DS21Q55 Application Note 405: Power-Fault Protection Layout - DS21Q55 Application Note 406: DS21Qx5y BSDL Scan Chain Mapping - DS21Q55 Application Note 461: Programming and Controlling the FDL on DS2141A, DS2151 - DS21Q55 Application Note 1797: Measuring Telecom Systems Against a Pulse Mask Template - DS21Q55 Application Note 2713: Switching Frame Mode In Live T1 Systems
- DS21Q55 Application Note 2731: DS2155, DS21Q55, DS2156 Programming SLC-96 - DS21Q55, DS21Q55 Application Note 3121: Selecting a T1/E1/J1 Single-Chip Transceiver - DS21Q55 Application Note 3208: Elastic Store Operation - DS21Q55 Application Note 3345: Examples of DS31256 Applications - DS21Q55 Application Note 3349: T1/E1 Loopback Operation for Dallas Semiconductor T1/E1/J1 transceivers - DS21Q55 Application Note 3610: DS21458 Quad and DS26528 Octal Transceiver Software Comparison - DS21Q55 Application Note 3686: DS2155 and DS26521 Software Comparison - DS21Q55
Ordering Information
Notes:
Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales .
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions .
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
This product cannot be purchased through our web site. Contact factory for availability.
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Document Ref.: xxxx;
2004-04-23
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