DS2155

T1/E1/J1 Single-Chip Transceiver

T1/E1/J1 Single-Chip Transceiver Provides Single Application Design for World-Wide Interoperability

Data Sheet (Rev. 5)
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Overview

  • 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

The DS2155 is a software-selectable T1, E1, or J1 single-chip transceiver (SCT) for short-haul and long-haul applications. The DS2155 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 DS2155 is pin and software compatible with the DS2156.

The LIU is composed of transmit and receive interfaces and a jitter attenuator. The transmit interface is responsible for generating the necessary waveshapes for driving the network and providing the correct source impedance depending on the type of media used. T1 waveform generation includes DSX-1 line buildouts as well as CSU line buildouts of -7.5dB, -15dB, and -22.5dB. E1 waveform generation includes G.703 waveshapes for both 75Ω coax and 120Ω twisted cables. The receive interface provides network termination and recovers clock and data from the network.

Applications

  • Add/Drop Multiplexers
  • Routers/Switches
  • T1/E1/J1 Line Cards
DS2155
T1/E1/J1 Single-Chip Transceiver
DS2155: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 9

Design Note 18

Technical Articles 13

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Tools & Simulations

BSDL Model File 2

IBIS Model 1

Evaluation Kits

DK101

Low-Cost Demo Kit Motherboard

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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 Details

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.

DK2000

High-Performance Demo Kit Motherboard

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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 Details

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
DK2000
High-Performance Demo Kit Motherboard

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