Specifications

2
Hardware Description
21
Rear panel connectors
TheCPMsupportsE‐KeycontrolbydescribingitsbackplaneinterfacestotheShelfManager.
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settoallowinsertionofATCA‐46xx‐compatible
RTMs.
Zone 1 connector
TheconnectorsinZone1provideredundant‐48VDCpow erandShelfManagementsignalsto
theboards.ThepowercontrolinterfacetotheIPMCisthroughthebackplaneconnectorP10
(Zone1powerdistributionconnector).RefertoTable 44onpage 111fordetails.
Zone 2 connectors
TheconnectorsinZone2providetheconnectionstotheBaseInterfaceandFabricInterface.
AllFabricconnectionsusepoint‐to‐point100Ωdifferentialsignals.Zone2iscalled"Fabric
Agnostic"whichmeansthatanyFabricthatcanuse100Ωdifferentialsignalscanbeusedwith
anAdvancedTCAbackplane.
BackplaneconnectorJ20providesZone2connectionstothesynchronizationclocksandto
theAMCupdatechannels.Fordetailedinformationabouttheconnectoritself,referto
Table 45onpage 112.
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.FormoreinformationabouttheJ23backplaneconnector,referto
Table 46onpage 112.