Product Overview

Features

  • Monolithic 3.3 V device that integrates an E1/T1/J1 Framer and line driver for shorthaul and longhaul applications.
  • Software selectable between T1/J1 and E1 operation on a per device basis.
  • Provides fully programmable shorthaul and longhaul pulse templates and line build out.
  • Meets or exceeds T1, J1, and E1 shorthaul and longhaul network access specifications, which include: ANSI T1.102, T1.403, T1.408, AT&T TR 62411, ITU-T G.703 and G.823, as well as the newer G.775 and ETSI 300-011 specifications.
  • Supports B8ZS, HDB3, and AMI line codes.
  • Provides receive clock recovery and line performance monitoring.
  • Provides on-board binary sequence generators and detectors that can be configured with various patterns for error testing, including those conforming to ITU-T 0.151.
  • Provides transmit and receive jitter attenuation.
  • Provides three full-featured HDLC controllers, each with 128-byte transmit and receive FIFOs, enabling dual compliance to the V5.1 and V5.2 interface standards.
  • Supports an IEEE P1149.1 JTAG test port.
  • Automatically generates DS1 performance report messages to ANSI T1.231 and other specifications.
  • Compatible with Mitel ST,-bus, AT&T CHI,, and MVIP PCM backplanes supporting rates of 1.544 Mbit/s, 2.048 Mbit/s, 4.096 Mbit/s and 8.192 Mbit/s.
  • Provides an 8-bit microprocessor bus interface for configuration, control, and status monitoring.
  • Low power +3.3 V CMOS technology.
  • Available in an 80-pin PQFP (14 mm by 14 mm) and an 81-pin CABGA (9 mm by 9 mm) package.
  • Provides a -40 °C to +85 °C industrial temperature operating range.
  • Typical Applications include:

    • Wireless Base Transceiver Station and Digital LoopCarriers (DLCs).
    • BITS Timing Systems.
    • Integrated Access Device (IAD).
    • Channel and Data Service Units (CSU/DSU).
    • Enterprise Routers.
    • V5.1/V5.2 Interfaces.

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    Product Brief
          Version Issue Date
      PDF Document COMET Short Form Data Sheet [85 kB] PMC-1961230 3 2001-08-09
    Reference Design
          Version Issue Date
    Locked PDF Document COMET Reference Design Rev. 2.0 [1.50 MB] PMC-1981210 1 1998-11-18
    Locked PDF Document COMET Evaluator Board Design Rev. 2.0 [1.36 MB] PMC-1980815 4 2000-06-22
    Data Sheet
          Version Issue Date
    Locked PDF Document PM4351 COMBINED E1/T1 TRANSCEIVER STANDARD PRODUCT DATA SHEET [1.52 MB] PMC-1970624 13 2008-09-16
    Errata
          Version Issue Date
    Locked PDF Document PM4351 COMET Device Errata [112 KB] PMC-2001577 10 2008-09-16
    Locked PDF Document COMET Reference Design Board Rev. 2.0 Errata [35 kB] PMC-1981211 1 1998-11-18
    Software Documentation
          Version Issue Date
    Locked PDF Document COMET and COMET-QUAD Device Driver Manual [882 kB] PMC-2001401 3 2002-12-04
    Software
          Version Issue Date
    Locked Compressed Document COMET and COMET-QUAD Device Driver [191 kB] PMC-2001456 rel 1.1 2003-02-13
    Application Note
          Version Issue Date
    Locked PDF Document Using the COMET Family in Low Wander Applications [165 KB] PMC-2081192 1 2008-09-16
    Locked PDF Document COMET Programmer's Guide [279 KB] PMC-1990615 5 2008-07-08
    Locked Compressed Document Programming the XLPG (Transmit Pulse Generator) Block [642 KB] PMC-2012645 1 2002-03-25
    Locked PDF Document Knowledge Base Items for the PM4351 COMET [1.35 MB] PMC-2020312 2003-10-06
    Locked PDF Document CTR4 Homologation Test Report for the PM4351 COMET [1.31 MB] PMC-1981184 1 1998-11-30
    Locked PDF Document CTR13 Homologation Test Report for the PM4351 COMET [448 kB] PMC-1981183 1 1998-11-30
    Locked PDF Document ETS 300-046 Test Report for the PM4351 COMET [259 kB] PMC-1981185 1 1998-11-30
    Locked PDF Document Using COMET in a BITS Application [559 kB] PMC-2010459 1 2001-04-25
    Locked PDF Document FCC Part 68 Surge Protection Test Report for the PM4351 COMET [552 kB] PMC-1981186 1 1998-11-30
    Locked PDF Document CTR12 Homologation Test Report for the PM4351 COMET [443 kB] PMC-1981182 1 1998-11-30
    Models
          Version Issue Date
    Locked Compressed Document COMET [17 kB] PMC-991074 1.04 1999-08-03
    BSDL Files
          Version Issue Date
      Text Document Boundary Scan Description Language (BSDL) Source Code for the PM4351 COMET Revision G PM4351-RI and PM4351-NI Devices [] PMC-1981140 7 2000-11-15