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PDF M28927-29 Data sheet ( Hoja de datos )

Número de pieza M28927-29
Descripción G.Shdsl Transceiver
Fabricantes Mindspeed Technologies 
Logotipo Mindspeed Technologies Logotipo



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No Preview Available ! M28927-29 Hoja de datos, Descripción, Manual

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M28975
ZipWirePlusG.shdsl Transceiver with
Embedded Microprocessor
Data Sheet
500054D
November 2002

1 page




M28927-29 pdf
www.DataSheet4U.com
M28975 Data Sheet
System Overview
Contents
Figures .........................................................................................................................................................................ix
Tables...........................................................................................................................................................................xi
1.0 System Overview........................................................................................................................................... 1-1
1.1 Introduction.......................................................................................................................................... 1-1
1.2 ZipWirePlus Transceiver/Framer Functional Summary....................................................................... 1-2
1.2.1 ZipWirePlus Microprocessor Functional Summary............................................................... 1-3
1.2.2 ZipWirePlus DSP Functional Summary ................................................................................ 1-3
1.2.3 ZipWirePlus G.hs Functional Summary ................................................................................ 1-5
1.2.4 ZipWirePlus DSL Framer Functional Summary.................................................................... 1-6
1.2.5 ZipWirePlus ATM PHY Transmission Convergence Functional Summary.......................... 1-7
1.3 ZipWirePlus AFE Functional Summary .............................................................................................. 1-8
1.4 ZipWirePlus Transmit Data Path ......................................................................................................... 1-9
1.5 ZipWirePlus Receive Data Path ......................................................................................................... 1-10
2.0 Application Interfaces .................................................................................................................................. 2-1
2.1 Single Device Configurations .............................................................................................................. 2-1
2.2 Multidevice Configurations.................................................................................................................. 2-2
2.3 Multipair DSL Framer Configuration .................................................................................................. 2-3
2.4 Framer Transparent Mode.................................................................................................................... 2-6
2.5 ZipWirePlus Transceiver/Framer to Bt8370 T1/E1 Interface .............................................................. 2-6
2.6 DSL Framer to Bt8474 Interface.......................................................................................................... 2-7
3.0 ZipWirePlus Clocking Architecture............................................................................................................ 3-1
3.1 Clocking Architecture Overview.......................................................................................................... 3-1
3.1.1 M28975 Clocking Architecture Implementation ................................................................... 3-1
3.2 HTU-C Clocking Modes ...................................................................................................................... 3-5
3.2.1 Plesiosynchronous Mode ....................................................................................................... 3-5
3.2.2 Plesiosynchronous Mode with External Clock Reference ..................................................... 3-6
3.2.3 Synchronous Mode ................................................................................................................ 3-6
3.2.3.1 Synchronous Slave Transmit Data Clock............................................................... 3-7
3.2.3.2 Synchronous Master Transmit Data Clock............................................................. 3-7
3.3 Clocking Modes for HTU-R Applications ........................................................................................... 3-8
3.3.1 Independent Transmit/Receive PCM Clocks ......................................................................... 3-8
3.3.2 PCM Loop Timed Clocking Mode ........................................................................................ 3-8
4.0 ZipWirePlus Framer Detailed Description................................................................................................. 4-1
4.1 Distinguishing Features........................................................................................................................ 4-1
4.2 Common Functions .............................................................................................................................. 4-3
4.2.1 Data FIFO .............................................................................................................................. 4-3
4.2.2 Two-Frame Receive Slip Buffer ............................................................................................ 4-3
4.3 DSL Section ......................................................................................................................................... 4-4
4.3.1 General DSL Function ........................................................................................................... 4-4
4.3.1.1 CRC Generator....................................................................................................... 4-4
500054D
Mindspeed Technologies™
Preliminary Information/Mindspeed Proprietary and Confidential
v

5 Page





M28927-29 arduino
www.DataSheet4U.com
M28975 Data Sheet
System Overview
Tables
Table 3-1. Clocking Modes ......................................................................................................................... 3-1
Table 3-2. ZipWirePlus Clocks ................................................................................................................... 3-4
Table 5-1. Crystal Specifications ................................................................................................................ 5-1
Table 5-2. Communication Interfaces ......................................................................................................... 5-3
Table 6-1. Pin List for M28975 DSP/Framer—Alphabetic Order .............................................................. 6-2
Table 6-2. Pin List for M28975 AFE/Line Driver—Alphabetic Order ....................................................... 6-4
Table 6-3. ZipWirePlus Transceiver/Framer Signal Definitions................................................................. 6-5
Table 6-5. ZipWirePlus AFE Signal Descriptions .................................................................................... 6-10
Table 7-1. Recommended Operating Conditions ........................................................................................ 7-1
Table 7-2. Absolute Maximum Ratings ...................................................................................................... 7-2
Table 7-3. ZipWirePlus Transceiver/Framer Power Dissipation................................................................. 7-4
Table 7-4. Transceiver/Framer DC Characteristics ..................................................................................... 7-4
Table 7-5. Host Port Timing........................................................................................................................ 7-6
Table 7-6: Input Clock Timing.................................................................................................................... 7-7
Table 7-7: Input Setup and Hold Timing..................................................................................................... 7-7
Table 7-8: Output Timing............................................................................................................................ 7-8
Table 7-9. UTOPIA Transmit Timing Table............................................................................................. 7-10
Table 7-10. UTOPIA Receive Timing Table ............................................................................................ 7-12
Table 7-11. AFE DC Characteristics......................................................................................................... 7-13
Table A- 1: Power Consumption of the M28975 in Idle Mode/Reset Stage .............................................. A-1
Table A- 2: Power Consumption of the M28975 in HDSL2 Mode at 9 kft (26 AWG) Loop .................... A-1
Table A- 3: Power Consumption of M28975 in G.hsdsl Mode at 9 kft (26 AWG) Loop in Annex A
Symmetric Mode ........................................................................................................................................ A-1
Table A- 4: CO, Annex A, Asymmetric, 9 Kft 26 AWG ........................................................................... A-2
Table A- 5: CO, Annex B, Asymmetric, 9Kft 26 AWG ............................................................................ A-2
Table B- 1: Recommended Pad Geometry ..................................................................................................B-1
Table B- 2: Recommended SMT Reflow Profile ........................................................................................B-3
Table D- 1: Dimensional Parameters (mm)................................................................................................ D-4
Table D- 2: Specification for a Two-layer Test Board ............................................................................... D-6
Table D- 3: Specification for a Four-layer Test Board............................................................................... D-6
Table D- 4: Specification for Delco Thermal Test Chips........................................................................... D-8
Table D- 5: Test Conditions ....................................................................................................................... D-8
500054D
Mindspeed Technologies™
Preliminary Information/Mindspeed Proprietary and Confidential
xi

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