Table of contents Version 1.0 (date) ................................................................................................................................................... vi Version X.X (date) ................................................................................................................................................. vi 1. Ten Gigabit Ethernet Reconciliation Sublayer (RS) and 10 Gigabit Media Independent Interface (XGMII) .............................................................................................................................................................................8 1.1 Overview.............................................................................................................................................................8 1.1.1 Summary of major concepts .................................................................................................................9 1.1.2 Application...............................................................................................................................................9 1.1.3 Rate of operation...................................................................................................................................10 1.1.4 Delay Constraints..................................................................................................................................10 1.1.5 Allocation of functions........................................................................................................................10 1.1.6 XGMII structure....................................................................................................................................10 1.1.7 Mapping of XGMII signals to P-SAP service primitives ..............................................................10 1.1.7.1 Mapping of PHY_DATA.request.......................................................................................... 11 1.1.7.1.1 Function ........................................................................................................................ 11 1.1.7.1.2 Semantics of the service primitive ........................................................................... 11 1.1.7.1.3 When generated........................................................................................................... 11 1.1.7.1.4 Effect of receipt ........................................................................................................... 11 1.1.7.2 Mapping of PHY_DATA.indicate......................................................................................... 12 1.1.7.2.1 Function ........................................................................................................................ 12 1.1.7.2.2 Semantics of the service primitive ........................................................................... 12 1.1.7.2.3 When generated........................................................................................................... 12 1.1.7.2.4 Effect of receipt ........................................................................................................... 13 1.1.7.3 Mapping of PHY_DATA_VALID.indicate......................................................................... 13 1.1.7.3.1 Function ........................................................................................................................ 13 1.1.7.3.2 Semantics of the service primitive ........................................................................... 13 1.1.7.3.3 When generated........................................................................................................... 13 1.1.7.3.4 Effect of receipt ........................................................................................................... 13 1.1.7.4 Mapping of PHY_LINK_OK.indicate.................................................................................. 14 1.1.7.4.1 Function ........................................................................................................................ 14 1.1.7.4.2 Semantics of the service primitive ........................................................................... 14 1.1.7.4.3 When generated........................................................................................................... 14 1.1.7.4.4 Effect of receipt ........................................................................................................... 14 1.1.7.5 Mapping of PHY_READY.indicate...................................................................................... 14 1.1.7.5.1 Function ........................................................................................................................ 14 1.1.7.5.2 Semantics of the service primitive ........................................................................... 14 1.1.7.5.3 When generated........................................................................................................... 14 1.1.7.5.4 Effect of receipt ........................................................................................................... 15 1.2 XGMII data stream ..........................................................................................................................................15 1.2.1 Inter-frame <inter-frame> ...................................................................................................................15 1.2.2 Preamble <preamble> and start of frame delimiter <sfd>.............................................................15 1.2.3 Data <data>............................................................................................................................................16 1.2.4 End of frame delimiter <efd> .............................................................................................................16 1.2.5 Definition of Start of Packet and End of Packet Delimiters ..........................................................16 1.3 XGMII functional specifications...................................................................................................................16 1.3.1 Transmit ..................................................................................................................................................17 1.3.1.1 TX_CLK (10 Gb/s transmit clock)........................................................................................ 17 Copyright ã 2001 by Lara Networks Suite 100, 2345 North First Street, San Jose, CA 95131 http://www.laranetworks.com All rights reserved. IEEE802.17-11Jul2001 Use of Lara Provided IEEE Templates July 11, 2000 Draft 0.40:8 1.3.1.2 TXC<3:0> (transmit control) ................................................................................................. 17 1.3.1.3 TXD<31:0> (transmit data).................................................................................................... 18 1.3.1.4 Start control character alignment........................................................................................... 18 1.3.2 Receive ...................................................................................................................................................19 1.3.2.1 RX_CLK (receive clock) ........................................................................................................ 19 1.3.2.2 RXC<3:0> (receive control) ................................................................................................... 19 1.3.2.3 RXD (receive data)................................................................................................................... 20 1.3.3 Error and fault handling.......................................................................................................................21 1.3.3.1 Response to error indications by the XGMII....................................................................... 21 1.3.3.2 Conditions for generation of transmit Error control characters........................................ 21 1.3.3.3 Response to indication of invalid frame sequences ............................................................ 21 1.3.4 Link fault signaling...............................................................................................................................21 1.3.4.2 Conventions............................................................................................................................... 22 1.3.4.3 Variables and counters............................................................................................................. 22 1.3.4.4 State Diagram............................................................................................................................ 23 1.4 XGMII electrical characteristics....................................................................................................................23 2. Ten Gigabit Ethernet XGMII Extender Sublayer (XGXS), and 10 Gigabit Attachment Unit Interface (XAUI)..............................................................................................................................................................................24 2.1 Overview...........................................................................................................................................................24 2.1.1 Scope.......................................................................................................................................................24