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5.70PortLinkMaintenanceResponseCSRn(SPn_LM_RESP)
SRIORegisters
Eachofthefourportsissupportedbyaregisterofthistype(seeTable142).Theportlinkmaintenance
responseCSRn(SPn_LM_RESP)isshowninFigure133anddescribedinTable143.
Table142.SPn_LM_RESPRegistersandtheAssociatedPorts
RegisterAddressOffsetAssociatedPort
SP0_LM_RESP1144hPort0
SP1_LM_RESP1164hPort1
SP2_LM_RESP1184hPort2
SP3_LM_RESP11A4hPort3
Figure133.PortLinkMaintenanceResponseCSRn(SPn_LM_RESP)
313016
RESPONSE_
Reserved
VALID
R-0R-0
15109540
ReservedACKID_STATUSLINK_STATUS
R-0R-0R-0
LEGEND:R=Readonly;-n=Valueafterreset
Table143.PortLinkMaintenanceResponseCSRn(SPn_LM_RESP)FieldDescriptions
BitFieldValueDescription
31RESPONSE_VALIDIfthelink-requestcausesalink-response,thisbitindicatesthatthe
link-responsehasbeenreceivedandthestatusfieldsarevalid.Ifthe
link-requestdoesnotcausealink-response,thisbitindicatesthatthe
link-requesthasbeentransmitted.Thisbitautomaticallyclearsonread.
30–10Reserved0Theseread-onlybitsreturn0swhenread.
9–5ACKID_STATUS00000b–11111bAckIDstatusfieldfromthelink-responsecontrolsymbol
4–0LINK_STATUS00000b–11111bLinkstatusfieldfromthelink-responsecontrolsymbol
SPRUE13A–September2006SerialRapidIO(SRIO)201
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