Specifications

3
LEDs and External Interfaces
28
Backplane interfaces
BackplaneconnectorJ23istheATCAdatatransportconnector,whichprovidesZone2 
connectionsfortwo10/100/1000BASE‐TEthernetBasechannelsandtwo10GBASE‐BX4
EthernetFabricchannels.See10‐gigabitEthernetFabricinterfaceonpage 41fordetails
aboutallsupportedEthernetFabricchannelmodes.Formoreinformationaboutthe
backplaneconnectors,refertoBackplaneinterfacesonpage 142.
BackplaneconnectorJ20providesZone2connectionstothesynchronizationclocksand
theAMCupdatechannels.Forinformationaboutusingupdatechannelstoconnectthe
AMCbaysontwoCPMs,refertoUpdatechannelconnectionstotheAMCbayonpage 46.
Fordetailedinformationabouttheconnectoritself,refertoZone2J20connectorpinout
onpage 144.
TheCPMsupportsE‐KeycontrolbydescribingitsbackplaneinterfacestotheShelf
Manager,asdescribedunderE‐Keycontrolofinterfacesonpage 59.
ThepowercontrolinterfacetotheIPMCisthroughthebackplaneconnectorP10,the
Zone1powerdistributionconnector.RefertoZone1P10connectorpinoutonpage 143
fordetails.
Alignment keys
TheCPMimplementstheK1andK2alignmentblocksatthetopofZone2andZone3,as
requiredbythePICMG3.0specification.TheZone2alignmentblock(K1)isassigneda
keyingvalueof11.TheZone3alignmentblock(K2)isassignedakeyingvalueof55.