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DS26521
Single T1/E1/J1 Transceiver

Single-Port T1/E1/J1 Transceiver Is a Single-Chip Framer and LIU Combination for T1, E1, and J1 Applications


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 1.7MB)
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The DS26521 is a single-channel framer and line interface unit (LIU) combination for T1, E1, and J1 applications. Each channel is independently configurable, supporting both long-haul and short-haul lines.

An evaluation kit is available:  DS26521DK  

Key Features   Applications/Uses
  • Complete T1, E1, or J1 Long-Haul/Short-Haul Transceiver (LIU plus Framer)
  • Internal Software-Selectable Transmit- and Receive-Side Termination for 100Ω T1 Twisted Pair, 110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair, and 75Ω E1 Coaxial Applications
  • Crystal-Less Jitter Attenuator can be Selected for Transmit or Receive Path; Jitter Attenuator Meets ETS CTR 12/13, ITU-T G.736, G.742, G.823, and AT&T Pub 62411
  • External Master Clock can be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock is Internally Adapted for T1 or E1 Usage in the Host Mode
  • Receive-Signal Level Indication from -2.5dB to -36dB in T1 Mode and -2.5dB to -44dB in E1 Mode in Approximate 2.5dB Increments
  • Transmit Open- and Short-Circuit Detection
  • LIU LOS in Accordance with G.775, ETS 300 233, and T1.231
  • Transmit Synchronizer
  • Flexible Signaling Extraction and Insertion Using Either the System Interface or Microprocessor Port
  • Alarm Detection and Insertion
  • T1 Framing Formats of D4, SLC-96, and ESF
  • J1 Support
  • E1 G.704 and CRC-4 Multiframe
  • Controlled by 8-Bit Parallel Port Interface or Serial Peripheral Interface (SPI)

 
  • Channel Banks
  • Channel Service Units (CSUs)
  • Data Service Units (DSUs)
  • Muxes Switches
  • T1/E1 Test Equipment

    Key Specifications:  T/E Carrier & Packetized Products
    Part Number Transmission Standard Functions Channels In-to-Out Clocks
    (MHz)
    VSUPPLY
    (V)
    EV Kit Package/Pins Price
    See Notes
    DS26521  T1/E1/J1 Framer + LIU 1 External Master Clock can be a multiple of 1.544 or 2.048 3.3 Yes
    See Data Sheet/
    $8.33 @1k
    See All T/E Carrier & Packetized Products (102)

    Diagram
    DS26521: Functional Diagram
    Functional Diagram

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    2006-11-30
    This page last modified: 2009-09-24


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