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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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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.
Applications
- 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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DS21Q55
Documentation
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Data Sheet
3
DS21Q55-DS21Q55N: Quad T1/E1/J1 Transceiver Data Sheet (Rev.1)
3103: 四路T1/E1/J1收发器 Data Sheet
3103: クワッドT1/E1/J1トランシーバ Data Sheet
Reliability Data
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Design Note
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Documentation
Data Sheet 1
Reliability Data 1
Application Note 5
Design Note 14
DS2153 Programming, ETS 300-011 Remote Alarm Generation
HDLC Configuration of Framers and Transceivers
NRZ Applications
Extended System Information Bus (ESIB) Control Application
DS2152, DS2154, DS21x5Y, and DS2155 Interfacing to the MC68360 (QUICC32)
Programming and Controlling the FDL on DS2141A, DS2151
J1 Japanese Standards
DS2155 Internal BERT Programming
Power-Fault Protection Layout
DS21Qx5y BSDL Scan Chain Mapping
Examples of DS31256 Applications
T1/E1 Loopback Operation for Maxim T1/E1/J1 Transceivers
Elastic Store Operation
Telecom Application Notes Index
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
Product6 |
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T1/E1/J1 Single-Chip Transceiver |
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|
Obsolete |
Quad E1 Transceiver |
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|
Quad T1/E1 Transceiver (3.3V, 5.0V) |
|||
|
|
Quad T1/E1 Transceiver (3.3V, 5.0V) |
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Quad T1/E1 Transceiver (3.3V, 5.0V) |
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Quad T1/E1 Transceiver (3.3V, 5.0V) |
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Evaluation Kits 2
DK2000
High-Performance Demo Kit Motherboard
Features and Benefits
- Interfaces with Up to Four Daughter Cards Simultaneously
- Connects PC-Based Demo Software to the Telecom ICs Under Evaluation
- Provides Point-and-Click Access to All Telecom IC Registers and Features
- Demo Software User Interface can be Customized with Simple Text Edits
- Supports Development of Telecom Firmware Before Target Board Design is Complete
- 64MB of DRAM, 4MB of Flash Memory
- Supports 5V, 3.3V, and 2.5V Telecom ICs
- Hardware Support for Daughter Card-to-Daughter Card and Daughter Card-to-Processor TDM Data Streams
- Hardware Support for UTOPIA II Interface
- Side TIM Connector Provides Access to the PowerPC 60x Bus for High-Performance Applications
- Provides Several Connectors for In-System Programming of Board Components
Product Detail
The DK2000 is a powerful, flexible platform for evaluating Dallas Semiconductor Telecom ICs and developing related firmware. The ICs are mounted on daughter cards specifically designed to plug into the DK2000's four connectors. The DK2000 provides a Motorola MPC8260 PowerQUICC II communications processor, L2 cache, DRAM, flash memory, various clocks and support logic, and an RS-232 interface to a host PC. As shipped from the factory, the processor runs general-purpose firmware that executes reads and writes to the daughter cards on behalf of PC-based demo software.
DK101
Low-Cost Demo Kit Motherboard
Features and Benefits
- Connects PC-Based Demo Software to the Telecom IC(s) Under Evaluation
- Provides Point-and-Click Access to All Telecom IC Registers and Features
- 128kB of Flash Memory, 264kB of SRAM
- Demo Software User Interface can be Customized with Simple Text Edits
- Allows Download and Execution of Custom Firmware for Advanced Applications
- Supports 3.3V and 5V Telecom ICs
- On-Board Oscillators: 3.088MHz (2 x DS1), 16.384MHz (8 x E1), and 44.736MHz (DS3)
- Four General-Purpose Switches Available for Use with Custom Firmware
- Motorola ONCE/BDM Connector for Code Development and Debug
Product Detail
The DK101 is a general-purpose demo kit platform for evaluating Dallas Semiconductor Telecom ICs. The ICs are mounted on daughter cards specifically designed to plug into the DK101's connector. The DK101 provides a microprocessor, flash- and SRAM-based program memory, various oscillators and support logic, and an RS-232 interface to a host PC. As shipped from the factory, the processor runs general-purpose firmware that executes reads and writes to the daughter card on behalf of PC-based demo software. Custom firmware can be downloaded and executed by the processor for advanced applications.
Tools & Simulations 1
BSDL Model File 1
BSDL Model File
