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5.84PortErrorandStatusCSRn(SPn_ERR_STAT)
SRIORegisters
Eachofthefourportsissupportedbyaregisterofthistype.
Figure140.PortErrorandStatusCSRn(SPn_ERR_STAT)
31-2726252423-212019181716
ReservedOUTPOUTPOUTPReservedOUTPOUTPOUTPOUTPOUTP
UT_PUT_FLUT_DUT_RUT_RUT_RUT_EUT_E
KT_DD_ENEGRDETRYETRIEETRYRRORRROR
ROPC_ENC_ENCD_STP_ENC_STP
R-0x00RC-RC-RC-R-0x00RC-R-R-RC-R-
0x000x000x000x000x000x000x000x00
LEGEND:R=Readonly;-n=valueafterreset
15-1110987-543210
ReservedINPUTINPUTINPUTReservedPORTReservPORTPORTPORT
_RET_ERR_ERR_WRITed_ERR_OK_UNIN
RY_SOR_EOR_SE_PNORITIALI
TPNCTPDZED
R-0x00R-RC-R-R-0x00RC-R-RC-R-R-
0x000x000x000x000x000x000x000x01
LEGEND:R=Readonly;-n=valueafterreset
Table114.PortErrorandStatusCSRn(SPn_ERR_STAT)FieldDescriptions
BitFieldValueDescription
31-27ReservedReserved
26OUTPUT_PKT_DOutputporthasdiscardedapacket.(switchdevicesonly)
ROP
25OUTPUT_FLD_EOutputporthasencounteredafailedcondition,meaningthatthefailedporterrorthresholdhas
NCbeenreachedinthePortnErrorRateThresholdRegister.Onceset,itremainssetuntilwrittenwith
alogic1toclear.
24OUTPUT_DEGROutputporthasencounteredadegradedcondition,meaningthatthedegradedporterrorthreshold
D_ENChasbeenreachedinthePortnErrorRateThresholdRegister.Onceset,itremainssetuntilwritten
withalogic1toclear.
23-21ReservedReserved
20OUTPUT_RETRYOutputporthasencounteredaretrycondition.Thisbitissetwhenbit18isset.Onceset,remains
_ENCsetuntilwrittenwithalogic1toclear.
19OUTPUT_RETRIOutputporthasreceivedapacket-retrycontrolsymbolandcannotmakeforwardprogress.Thisbit
EDissetwhenbit18issetandisclearedwhenapacket-acceptedorapacket-not-acceptedcontrol
symbolisreceived(read-only).
18OUTPUT_RETRYOutputporthasreceivedapacket-retrycontrolsymbolandisinthe"outputretry-stopped"state
_STP(read-only).
17OUTPUT_ERROOutputporthasencountered(andpossiblyrecoveredfrom)atransmissionerror.Thisbitisset
R_ENCwhenbit16isset.Onceset,remainssetuntilwrittenwithalogic1toclear
16OUTPUT_ERROOutputisinthe"outputerror-stopped"state(read-only).
R_STP
15-11ReservedReserved
10INPUT_RETRY_Inputportisinthe"inputretry-stopped"state(read-only).
STP
9INPUT_ERROR_Inputporthasencountered(andpossiblyrecoveredfrom)atransmissionerror.Thisbitissetwhen
ENCbit8isset.Onceset,remainssetuntilwrittenwithalogic1toclear
8INPUT_ERROR_Inputportisinthe"inputerror-stopped"state(read-only).
STP
7-5ReservedReserved
4PORT_WRITE_PPorthasencounteredaconditionwhichrequiredittoinitiateaMaintenancePort-writeoperation
NDThisbitisonlyvalidifthedeviceiscapableofissuingamaintenanceport-writetransaction.Once
setremainssetuntilwrittenwithalogic1toclear.
3ReservedReserved
2PORT_ERRORInputoroutputporthasencounteredanerrorfromwhichhardwarewasunabletorecover.Once
set,remainssetuntilwrittenwithalogic1toclear.
186SerialRapidIO(SRIO)SPRU976–March2006
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