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SRIORegisters
Table115.PortControlCSRn(SPn_CTL)FieldDescriptions(continued)
BitFieldValueDescription
21INPUT_PORT_EInputportreceiveenable
NABLE
0bPortisstoppedandonlyenabledtorouteorrespondI/OlogicalMAINTENANCEpackets,
dependinguponthefunctionalityoftheprocessingelement.Otherpacketsgenerate
packet-not-acceptedcontrolsymbolstoforceanerrorconditiontobesignaledbythesending
device.Controlsymbolsarenotaffectedandarereceivedandhandlednormally.
1bPortisenabledtorespondtoanypacket
20ERROR_CHECKThisbitdisablesallRapidIOtransmissionerrorchecking.Devicebehaviorwhenerrorcheckingand
_DISABLErecoveryisdisabledandanerrorconditionoccursisundefined.
0bErrorcheckingandrecoveryisenabled
Errorcheckingandrecoveryisdisabled1b
19SendincomingMulticast-eventcontrolsymbolstothisport(multipleportdevicesonly) MULTICAST_PARTICIPANT
18-4ReservedReserved
3STOP_PORT_FLWhenset,thisbitcausestheporttosetthePortErrorbitinthePortnErrorandStatusCSRand
D_ENC_ENABLEstopattemptingtosendpacketstotheconnecteddevicewhentheOutputFailed-encounteredbitis
set.PacketsarediscardediftheDropPacketEnablebitisset.Whencleared,theportcontinuesto
attempttotransmitpacketstotheconnecteddeviceiftheOutputFailed-encounteredbitisset.
2DROP_PACKET_Whenset,thisbitallowstheoutputporttodroppacketsthatareacknowledgedwitha
ENABLEpacket-not-acceptedcontrolsymbolwhentheerrorfailedthresholdisexceeded.Iftheport"heals",
andthecurrenterrorratefallsbelowthefailedthreshold,theoutputnolongerdropspackets
(switchdevicesonly).Whencleared,theoutputportcontinuestotrytotransmitpacketsthathave
beenrejectedduetotransmissionerrors
1PORT_LOCKOUPortLockout:Whencleared,thisportisenabledtoissueanypackets.Whenset,thisportis
Tstoppedandisnotenabledtoissueorreceiveanypackets;theinputportcanstillfollowthe
trainingprocedureandcanstillsendandrespondtolink-requests;allreceivedpacketsreturn
packet-not-acceptedcontrolsymbolstoforceanerrorconditiontobesignaledbythesending
device.
0PORT_TYPEPorttype.Thisindicatestheporttype,parallelorserial(readonly).
0bParallelport
1bSerialport
SPRU976–March2006SerialRapidIO(SRIO)189
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