IEEE Std 802.3bz-2016
Amendment 7: Media Access Control Parameters, Physical Layers, and Management Parameters
for 2.5 Gb/s and 5 Gb/s Operation
17
Copyright © 2016 IEEE. All rights reserved.
126.3.2.3.2 PCS descrambler............................................................................................. 90
126.3.2.3.3 Invalid blocks.................................................................................................. 90
126.3.3 Test-pattern generators ..................................................................................................... 91
126.3.4 PMA training side-stream scrambler polynomials ........................................................... 91
126.3.4.1 Generation of bits San, Sbn, Scn, Sdn .................................................................... 92
126.3.4.2 Generation of 4D symbols TAn, TBn, TCn, TDn .................................................. 92
126.3.4.3 PMA training mode descrambler polynomials ....................................................... 93
126.3.5 LPI signaling..................................................................................................................... 93
126.3.5.1 LPI Synchronization ............................................................................................... 94
126.3.5.2 Quiet period signaling............................................................................................. 95
126.3.5.3 Refresh period signaling ......................................................................................... 95
126.3.6 Detailed functions and state diagrams .............................................................................. 95
126.3.6.1 State diagram conventions ...................................................................................... 95
126.3.6.2 State diagram parameters........................................................................................ 96
126.3.6.2.1 Constants......................................................................................................... 96
126.3.6.2.2 Variables ......................................................................................................... 96
126.3.6.2.3 Timers ............................................................................................................. 98
126.3.6.2.4 Functions......................................................................................................... 99
126.3.6.2.5 Counters........................................................................................................ 100
126.3.6.3 State diagrams....................................................................................................... 101
126.3.7 PCS management............................................................................................................ 101
126.3.7.1 Status..................................................................................................................... 101
126.3.7.2 Counters................................................................................................................ 102
126.3.7.3 Loopback .............................................................................................................. 109
126.4 Physical Medium Attachment (PMA) sublayer........................................................................ 109
126.4.1 PMA functional specifications........................................................................................ 109
126.4.2 PMA functions................................................................................................................ 110
126.4.2.1 PMA Reset function.............................................................................................. 110
126.4.2.2 PMA Transmit function ........................................................................................ 110
126.4.2.2.1 Alert signal.................................................................................................... 110
126.4.2.2.2 Link failure signal......................................................................................... 112
126.4.2.3 PMA transmit disable function............................................................................. 112
126.4.2.3.1 Global PMA transmit disable function ......................................................... 112
126.4.2.3.2 PMA pair by pair transmit disable function.................................................. 112
126.4.2.3.3 PMA MDIO function mapping..................................................................... 112
126.4.2.4 PMA Receive function.......................................................................................... 113
126.4.2.5 PHY Control function........................................................................................... 114
126.4.2.5.1 Infofield notation .......................................................................................... 115
126.4.2.5.2 Start of Frame Delimiter............................................................................... 115
126.4.2.5.3 Current transmitter settings........................................................................... 115
126.4.2.5.4 Next transmitter settings ............................................................................... 116
126.4.2.5.5 Requested transmitter settings ...................................................................... 116
126.4.2.5.6 Message field ................................................................................................ 116
126.4.2.5.7 SNR_margin ................................................................................................. 117
126.4.2.5.8 Transition counter......................................................................................... 118
126.4.2.5.9 Coefficient exchange handshake .................................................................. 118
126.4.2.5.10 Ability fields ................................................................................................. 118
126.4.2.5.11 Reserved fields.............................................................................................. 118
126.4.2.5.12 Vendor-specific field .................................................................................... 118
126.4.2.5.13 Coefficient field ............................................................................................ 119
126.4.2.5.14 CRC16 .......................................................................................................... 119
126.4.2.5.15 Startup sequence ........................................................................................... 119
126.4.2.5.16 Fast retrain function...................................................................................... 122
126.4.2.6 Link Monitor function .......................................................................................... 123