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VLYNQPortRegisters
Table7.ControlRegister(CTRL)FieldDescriptions(continued)
BitFieldValueDescription
7INT2CFGInterrupttoconfigurationregister.Determineswhichregisteriswrittenwiththestatuscontainedin
interruptpacketsthatarereceivedovertheserialinterface.Alwayswrite1tothisbitandconfigure
theinterruptpointerregistertopointtotheinterruptpending/setregister.
0Bits[31:2]oftheinterruptpointerregisterareusedtopointtoasysteminterruptregister.
1Theleastsignificant8bitsoftheinterruptpointerregisterareusedtopointtoaVLYNQmodule
localregister(typicallytheinterruptpending/setregister).
6-3Reserved0Reserved.Alwaysreadas0.Writeshavenoeffect.
2AOPTDISABLEAddressoptimizationdisable.
0Addressoptimizationisenabled,eliminatingunnecessaryaddressbytes.
1Addressoptimizationisdisabled.
1ILOOPInternalloopback.
0Normaloperation.
1Serialtransmitdataiswrappedbacktotheserialreceivedata.
0RESETSoftwarereset.ItdoesnotresettheVLYNQmemory-mappedregisters(exceptfortheVLYNQ
statusregister).YouhavetoreprogramtheVLYNQregistersiftheymusthaveadifferentvalue
afterasoftwarereset.
0Normaloperation.
1Allinternalstatemachinesarereset,theserialinterfaceisdisabled,andthelinkislost.
SPRU938B–September2007VLYNQPort27
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