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5.68ProcessingElementFeaturesCAR(PE_FEAT)
SRIORegisters
Figure124.ProcessingElementFeaturesCAR(PE_FEAT)
3130292827-16
BRIDGMEMOPROCSWITReserved
ERYESSOCH
R
R-R-R-R-R-0x00
0x000x000x010x00
LEGEND:R=Readonly;-n=valueafterreset
15-8765432-0
ReservedFLOWRETRCRF_LARGEXTEEXTENDED_ADDRESS
_CONANSMISUPPE_SUNDEDING_SUPPORT
TROLT_SUORTPPOR_FEAT
_SUPPPRETURES
PORTSS
R-0x00R-R-R-R-R-R-0x0001
0x000x000x000x000x01
LEGEND:R=Readonly;-n=valueafterreset
Table98.ProcessingElementFeaturesCAR(PE_FEAT)FieldDescriptions
BitFieldValueDescription
31BRIDGEPEcanbridgetoanotherinterface.ExamplesarePCI,proprietaryprocessorbuses,DRAM,etc.
30MEMORYPEhasphysicallyaddressablelocaladdressspaceandcanbeaccessedasanendpointthrough
non-maintenance(i.e.,non-coherentreadandwrite)operations.Thislocaladdressspacemaybe
limitedtolocalconfigurationRegisters,orcouldbeon-chipSRAM,etc.
29PROCESSORPEphysicallycontainsalocalprocessororsimilardevicethatexecutescode.Adevicethatbridges
toaninterfacethatconnectstoaprocessordoesnotcount(seebit31).
28SWITCHPEcanbridgetoanotherexternalRapidIOinterface-aninternalporttoalocalendpointdoesnot
countasaswitchport.Forexample,adevicewithtwoRapidIOportsandalocalendpointisatwo
portswitch,notathreeportswitch,regardlessoftheinternalarchitecture.
27-8ReservedReserved
7FLOW_CONTROPEsupportscongestionflowcontrolmechanism
L_SUPPORT
0bPEdoesnotsupportflowcontrol
1bPEsupportsflowcontrol
6RETRANSMIT_SPEsupportssuppressionoferrorrecoveryonpacketCRCerrors.
UPPRESS
0bPEdoesnotsupportsuppression
1bPEsupportssuppression
5CRF_SUPPORTThisbitindicatesPEsupportfortheCriticalRequestFlow(CRF)Function.
0bPEdoesnotsupportCRFFunction
1bPEsupportsCRFFunction
4LARGE_SUPPOSupportofcommontransportlargesystems.
RT
0bPEdoesnotsupportcommontransportlargesystems
1bPEsupportscommontransportlargesystems
3EXTENDED_FEAPEhasextendedfeatureslist;theextendedfeaturespointerisvalid.
TURES
2-0EXTENDED_ADDIndicatesthenumberaddressbitssupportedbythePEbothasasourceandtargetofanoperation.
RESSING_SUPPAllPEsshallatminimumsupport34bitaddresses.Encodingsotherthanbelowarereserved.
ORT
111bPEsupports66,50and34bitaddresses
101bPEsupports66and34bitaddresses
011bPEsupports50and34bitaddresses
001bPEsupports34bitaddresses
SerialRapidIO(SRIO) 170SPRU976–March2006
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