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Conexant Bt8960 Hardware User's Manual

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Bt8960
Hardware User 's Guide
100188B
November 2000

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Summary of Contents for Conexant Bt8960

  • Page 1 Bt8960 Hardware User ’s Guide 100188B November 2000...
  • Page 2 Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale.

  • Page 3: Table Of Contents

    ............9 Memory Conexant 100188B Conexant Proprietary and Confidential...

  • Page 4: Table Of Contents

    ................13 Conexant 100188B Conexant Proprietary and Confidential...

  • Page 5: List Of Figures

    Detail “A” for Page 1 of the Bt8960 Schematic ....... .
  • Page 6 Bt8960 List of Figures Bt8960EVM Hardware User’s Guide Conexant 100188B Conexant Proprietary and Confidential...

  • Page 7: List Of Tables

    Memory Mapping............9 Conexant 100188B Conexant Proprietary and Confidential...
  • Page 8 Bt8960 List of Tables Bt8960EVM Hardware User’s Guide Conexant viii 100188B Conexant Proprietary and Confidential...

  • Page 9: Bt8960Evm Hardware User's Guide

    Introduction Welcome to the Bt8960 Evaluation System from Brooktree Corporation. You can use the Bt8960 Evaluation System to evaluate the performance of the Bt8960 device, to develop software for your Digital Subscriber Line (DSL) system, and for many other applications. Brooktree has created this development platform to help its customers get their communication system products to market as quickly as possible.

  • Page 10: User Interface Program

    The Bt8960EVM has been designed to operate at a data rate of 288 Kbits per second. It can be modified to run at other data rates supported by the Bt8960 device. Please see the Bt8960 datasheet or the Interconnection Information application note for more information on how to modify the line card for different data rates.

  • Page 11: Setup Instructions

    J8, TDAT IN To PC COM2 RS-232 (Optional) J7, QCLK Out J6, RDAT OUT J3, Power J1 or J2, Line J5, BCLK OUT Ext Tx Data Data Wireline Simulator Bit Error Rate Detector 100188_001 Conexant 100188B Conexant Proprietary and Confidential...
  • Page 12 EVM will go into the idle state. If both line cards pass self-test, the EVM will automatically try to startup on the loop connected between the line terminals on the EVM Conexant 100188B Conexant Proprietary and Confidential...

  • Page 13: Uip Quick Start

    NOTE: ETSI ISDN and CSA loops. The model should be chosen according to the application and data rate. Brooktree used the DLS 200 ISDN ANSI and ETSI models to evaluate the 288 kbps loop performance of the Bt8960. Conexant 100188B...

  • Page 14: Communications Analyzer Bit Error Rate Detector

    See the “Power Supply/Line Card Configuration Interface (J3)” section for more details on this interface. Mounting Plate The mounting plate simply provides a mounting surface for the line cards and power supply assembly. Conexant 100188B Conexant Proprietary and Confidential...

  • Page 15: Interface Descriptions

    J3 connector and given to jumper J12 by removing the 0 ohm resistor, R44, and installing jumper J12. Note that the 8032 microprocessor PORT1B7 signal (pin 9) contains an internal pull-up resistor that is connected to J3-3 so that no external pull-up resistor is required. Conexant 100188B Conexant Proprietary and Confidential...

  • Page 16: Rs-232 Interface (J4)

    Four BNC connectors are provided to connect the raw digital data and clocks to be transmitted and received over the line to the Bt8960. These connectors are buffered through an HCT244 buffer to protect the Bt8960 from improper connections and to provide extra drive strength for coax cables.

  • Page 17: 80C32 Processor Circuitry

    A 64 Kbyte PROM (27C512) provides program memory to the 80C32. The 80C32 contains 256 bytes of internal RAM. No external RAM is provided. The upper address line of the 80C32 processor (ADDR15) is used as chip select for the Bt8960 device. The memory is mapped according to...

  • Page 18: Status Leds

    Bt8960 device. Voltage bypass and compensation capacitors are located as close to their associated devices as possible. In addition, capacitors C5 and C6 are located as close to the Bt8960 device as possible to minimize noise at the Bt8960 analog inputs.

  • Page 19: Schematics, Layout Drawings And Boms

    Appendix A Schematics, Layout Drawings and BOMs The schematic, layout drawing and BOM for the 8960 line card are presented on the following pages. Figure 2. Detail “A” for Page 1 of the Bt8960 Schematic .1UF > T1IN T1OUT SEROUT...
  • Page 20 Bt8960 Appendix A Schematics, Layout Drawings and BOMs Bt8960EVM Hardware User’s Guide Conexant 100188B Conexant Proprietary and Confidential...

  • Page 21: 0.0 Sales Offices

    Printed in USA Europe – Israel/Greece Phone: +972 9 9524000 World Headquarters Fax: +972 9 9573732 Conexant Systems, Inc. 4311 Jamboree Road Europe South – France Phone: +33 1 41 44 36 51 Newport Beach, CA Fax: +33 1 41 44 36 90...

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