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SRIORegisters
Table147.PortErrorandStatusCSRn(SPn_ERR_STAT)FieldDescriptions(continued)
BitFieldValueDescription
23–21Reserved0Theseread-onlybitsreturn0swhenread.
20OUTPUT_RETRY_ENCOutputretryconditionencountered.Onceset,theOUTPUT_RETRY_ENCbit
remainssetuntilsoftwarewritesa1toit.
0Theoutputporthasnotencounteredaretrycondition.
1Theoutputporthasencounteredaretrycondition.Thisbitissetwhenbit18
isset.
19OUTPUT_RETRIEDOutputretried.OUTPUT_RETRIEDisaread-onlybit.
0Theoutputporthasnotreceivedapacket-retrycontrolsymbol.
1Theoutputporthasreceivedapacket-retrycontrolsymbolandcannotmake
forwardprogress.Thisbitissetwhenbit18issetandisclearedwhena
packet-acceptedorpacket-not-acceptedcontrolsymbolisreceived.
18OUTPUT_RETRY_STPOutputretry-stoppedstate.OUTPUT_RETRY_STPisaread-onlybit.
0Theoutputporthasnotreceivedapacket-retrycontrolsymboland/orisnot
inthe"outputretry-stopped"state.
1Theoutputporthasreceivedapacket-retrycontrolsymbolandisinthe
"outputretry-stopped"state.
17OUTPUT_ERROR_ENCOutputtransmissionerrorencountered.Onceset,the
OUTPUT_ERROR_ENCbitremainssetuntilsoftwarewritesa1toit.
0Theoutputporthasnotencounteredatransmissionerror.
1Theoutputporthasencountered(andpossiblyrecoveredfrom)a
transmissionerror.Thisbitissetwhenbit16isset.
16OUTPUT_ERROR_STPOutputerror-stopped.OUTPUT_ERROR_STPisaread-onlybit.
0Theoutputportisnotinthe"outputerror-stopped"state.
1Theoutputportisinthe"outputerror-stopped"state.
15–11Reserved0Theseread-onlybitsreturn0swhenread.
10INPUT_RETRY_STPInputretry-stoppedstate.INPUT_RETRY_STPisaread-onlybit.
0Theinputportisnotinthe"inputretry-stopped"state.
1Theinputportisinthe"inputretry-stopped"state.
9INPUT_ERROR_ENCInputporttransmissionerrorencountered.Onceset,the
INPUT_ERROR_ENCbitremainssetuntilsoftwarewritesa1toit.
0Theinputporthasnotencounteredatransmissionerror.
1Theinputporthasencountered(andpossiblyrecoveredfrom)atransmission
error.Thisbitissetwhenbit8isset.
8INPUT_ERROR_STPInputerror-stoppedstate.INPUT_ERROR_STPisaread-onlybit.
0Theinputportisnotinthe"inputerror-stopped"state.
1Theinputportisinthe"inputerror-stopped"state.
7–5Reserved0Theseread-onlybitsreturn0swhenread.
4PORT_WRITE_PNDPort-writepending.Thisbitisonlyvalidifthedeviceiscapableofissuinga
maintenanceport-writetransaction.Onceset,thePORT_WRITE_PNDbit
remainssetuntilsoftwarewritesa1toit.
0Theporthasnotencounteredaconditionwhichrequiredittoinitiatea
MaintenancePort-writeoperation.
1Theporthasencounteredaconditionwhichrequiredittoinitiatea
MaintenancePort-writeoperation.
3Reserved0Thisread-onlybitreturns0whenread.
2PORT_ERRORPortunrecoverableerror.Onceset,thePORT_ERRORbitremainssetuntil
softwarewritesa1toit.
0Theinputoroutputporthasnotencounteredanerrorfromwhichhardware
wasunabletorecover.
1Theinputoroutputporthasencounteredanerrorfromwhichhardwarewas
unabletorecover.
204SerialRapidIO(SRIO)SPRUE13A–September2006
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