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5.69PortLinkMaintenanceRequestCSRn(SPn_LM_REQ)
SRIORegisters
Eachofthefourportsissupportedbyaregisterofthistype(seeTable140).SPn_LM_REQisshownin
Figure132anddescribedinTable141.
Table140.SPn_LM_REQRegistersandtheAssociatedPorts
RegisterAddressOffsetAssociatedPort
SP0_LM_REQ1140hPort0
SP1_LM_REQ1160hPort1
SP2_LM_REQ1180hPort2
SP3_LM_REQ11A0hPort3
Figure132.PortLinkMaintenanceRequestCSRn(SPn_LM_REQ)
31320
ReservedCOMMAND
R-0R/W-000
LEGEND:R/W=Read/Write;R=Readonly;-n=Valueafterreset
Table141.PortLinkMaintenanceRequestCSRn(SPn_LM_REQ)FieldDescriptions
BitFieldValueDescription
31–3Reserved0Theseread-onlybitsreturn0swhenread.
2–0COMMAND000b–111bAwritetothisregistergeneratesalink-requestcontrolsymbolonthecorresponding
portinterface.Commandtobesentinthelink-requestcontrolsymbol.Whenread,
thisfieldreturnsthelastwrittenvalue.
SerialRapidIO(SRIO) 200SPRUE13A–September2006
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