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DS21Q55, DS21Q55N
Quad T1/E1/J1 Transceiver
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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.
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Data Sheet
Errata DS21Q55 21Q55B1.pdf
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Key Features
- 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
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Applications/Uses
- Channel Banks
- Channel Service Units (CSUs)
- Data Service Units (DSUs)
- DSL Add/Drop Multiplexers
- Muxes
- Routers/Switches
- Routers/Switches
- T1/E1 Test Equipment
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Diagram
Block Diagram
Application Notes
| Application Note 319 |
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DS2152, DS2154, DS21x5Y, and DS2155 Interfacing to the MC68360 (QUICC32) |
| Application Note 336 |
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Transparent Operation on T1, E1 Framers and Transceivers |
| Application Note 340 |
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DS2153 Programming, ETS 300-011 Remote Alarm Generation |
| Application Note 345 |
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DS21352/552, DS2151, DS2152, DS2141A, DS21Q42 Programming SLC-96 |
| Application Note 351 |
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T1/E1 and T3/E3 Transformer Selection Guide |
| Application Note 374 |
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DS2155 vs. DS21x5y: Software and Hardware Considerations
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| Application Note 382 |
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J1 Japanese Standards |
| Application Note 389 |
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DS2155 Internal BERT Programming |
| Application Note 390 |
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DS31256 and T1/E1 Interface |
| Application Note 391 |
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NRZ Applications |
| Application Note 394 |
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HDLC Configuration of Framers and Transceivers |
| Application Note 396 |
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Design Migration from DS21Q55 to DS21Q50 or DS21Q59 |
| Application Note 397 |
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Pulse Template Measurement |
| Application Note 400 |
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DS2155 Monitor Mode Design |
| Application Note 401 |
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Extended System Information Bus (ESIB) Control Application |
| Application Note 403 |
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DS2155 and DS26401 Software Comparison |
| Application Note 405 |
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Power-Fault Protection Layout |
| Application Note 406 |
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DS21Qx5y BSDL Scan Chain Mapping |
| Application Note 461 |
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Programming and Controlling the FDL on DS2141A, DS2151 |
| Application Note 1797 |
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Measuring Telecom Systems Against a Pulse Mask Template |
| Application Note 2713 |
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Switching Frame Mode In Live T1 Systems
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| Application Note 2731 |
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DS2155, DS21Q55, DS2156 Programming SLC-96 |
| Application Note 3121 |
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Selecting a T1/E1/J1 Single-Chip Transceiver |
| Application Note 3208 |
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Elastic Store Operation |
| Application Note 3345 |
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Examples of DS31256 Applications |
| Application Note 3349 |
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T1/E1 Loopback Operation for Maxim T1/E1/J1 Transceivers |
| Application Note 3610 |
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DS21458 Quad and DS26528 Octal Transceiver Software Comparison |
| Application Note 3686 |
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DS2155 and DS26521 Software Comparison |
Product Guides
Reliability Reports
| Reliability Report: |
DS21Q55.pdf |
| Request Reliability Report for: |
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Software/Models
Ordering Information
This product cannot be purchased through our web site. Contact factory for availability.
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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.
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Information Index
Document Ref.: xxxx
Rev 1;
2004-04-23
This page last modified: 2009-10-15
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