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3.4InterruptPriorityVectorStatus/ClearRegister(INTPRI)
3.5InterruptStatus/ClearRegister(INTSTATCLR)
VLYNQPortRegisters
Theinterruptpriorityvectorstatus/clearregister(INTPRI)displaysthehighestpriorityvectorwitha
pendinginterruptwhenread.Whenwriting,onlybits[4:0]arevalid,andthevaluerepresentsthevectorof
theinterrupttobecleared.TheINTPRIisshowninFigure12anddescribedinTable9.
Figure12.InterruptPriorityVectorStatus/ClearRegister(INTPRI)
313016
NOINTPENDReserved
R-1hR-0
15540
ReservedINSTAT
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table9.InterruptPriorityVectorStatus/ClearRegister(INTPRI)FieldDescriptions
BitFieldValueDescription
31NOINTPENDInterruptpendingstatus.
0Indicatesthereisapendinginterrupt.
1Indicatesthattherearenopendinginterruptsfromtheinterruptstatus/clearregister.
30-5Reserved0Reserved.Alwaysreadas0.Writeshavenoeffect.
4-0INSTAT0-1FhWhenread,thisfielddisplaysthevectorthatismappedtothehighestpriorityinterruptbitthatis
pendingfromtheinterruptstatus/clearregister(INSTATCLR),withbit0asthehighestpriority,and
bit31asthelowest.Writingthevectorvaluebacktothisfieldclearstheinterrupt.
Theinterruptstatus/clearregister(INTSTATCLR)indicatestheunmaskedinterruptstatus.The
INTSTATCLRisshowninFigure13anddescribedinTable10.
Figure13.InterruptStatus/ClearRegister(INTSTATCLR)
310
INTCLR
R/W-0
LEGEND:R/W=Read/Write;-n=valueafterreset
Table10.InterruptStatus/ClearRegister(INTSTATCLR)FieldDescriptions
BitFieldValueDescription
31-0INTCLR0-FFFFFFFFhThisfieldindicatestheunmaskedstatusofeachinterrupt.Writinga1toanysetbitinthisfield
clearsthecorrespondinginterrupt.IfthereisabitsetinthisregisterandiftheINTLOCALbitin
thecontrolregister(CTRL)isalsoset,theVLYNQinterrupt(VLQINT)isasserted.
30VLYNQPortSPRU938B–September2007
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