xvi Copyright © 2008 IEEE. All rights reserved.
9. Short-haul copper PMD electrical specification............................................................................. 245
9.1 Introduction............................................................................................................................ 245
9.1.1 Short-haul copper PHY operation ............................................................................. 245
9.1.2 Short-haul copper physical connection specification................................................ 247
9.1.3 Interfaces ................................................................................................................... 248
9.1.4 Modes of operation.................................................................................................... 248
9.2 Data-strobe (DS) mode specification..................................................................................... 248
9.2.1 Port interface .............................................................................................................248
9.2.1.1 Signal amplitude....................................................................................... 250
9.2.1.2 Common mode voltage............................................................................. 251
9.2.1.3 Speed signaling......................................................................................... 252
9.2.1.4 Arbitration signal voltages........................................................................ 253
9.2.1.5 Input impedance ....................................................................................... 254
9.2.1.6 Noise......................................................................................................... 254
9.2.1.7 Driver and receiver fault protection.......................................................... 255
9.2.2 Media signal timing................................................................................................... 255
9.2.2.1 Data rate.................................................................................................... 255
9.2.2.2 Data signal rise and fall times................................................................... 255
9.2.2.3 Jitter and skew .......................................................................................... 256
9.2.3 Coding ....................................................................................................................... 256
9.2.4 DS PHY signals......................................................................................................... 256
9.2.5 DS PHY line states.................................................................................................... 257
9.2.6 Cable PHY timing constants ..................................................................................... 259
9.2.7 Gap timing.................................................................................................................264
9.2.8 Speed signal sampling and filtering .......................................................................... 265
9.2.9 Data transmission and reception................................................................................ 266
9.2.9.1 Data transmission ..................................................................................... 266
9.2.9.2 Data reception and repeat ......................................................................... 267
9.3 Beta mode specification ......................................................................................................... 267
9.3.1 Transmitter electrical specifications.......................................................................... 267
9.3.2 Receiver electrical specifications .............................................................................. 271
9.3.2.1 S3200 equalization ................................................................................... 275
9.3.3 Electrical measurements............................................................................................ 275
9.3.3.1 Transmit rise and fall time........................................................................ 275
9.3.3.2 Transmit skew........................................................................................... 275
9.3.3.3 Transmit eye (normalized and absolute) .................................................. 276
9.3.3.4 Rise and fall time setting for receiver jitter tolerance test........................ 276
9.3.3.5 Skew setting for receiver jitter tolerance test ........................................... 276
9.3.3.6 Receiver jitter tolerance............................................................................ 277
9.3.3.7 Minimum amplitude for receiver jitter tolerance test............................... 277
9.3.3.8 S3200 BER ............................................................................................... 278
9.3.3.9 S3200 electrical test configuration ........................................................... 278
9.3.4 DC biasing.................................................................................................................278
9.3.5 Toning and signal detect............................................................................................ 279
9.3.5.1 Connection tone........................................................................................ 279
9.3.5.2 PMD signal detect function...................................................................... 280
9.3.5.3 Application note ....................................................................................... 281
9.3.6 Jitter specifications.................................................................................................... 281
9.3.7 Intrapair skew............................................................................................................ 285
9.3.8 Termination and isolation.......................................................................................... 285
9.3.8.1 Bilingual port termination and isolation................................................... 285
9.3.8.2 Beta-only port termination and isolation.................................................. 286
9.3.8.3
PIL-FOP term
ination and isolation........................................................... 287