4.14MDIOUserPHYSelectRegister1(USERPHYSEL1)
MDIORegisters
TheMDIOuserPHYselectregister1(USERPHYSEL1)isshowninFigure40anddescribedin
Table38.
Figure40.MDIOUserPHYSelectRegister1(USERPHYSEL1)
3116
Reserved
R-0
15876540
ReservedLINKSELLINKINTENBRsvdPHYADRMON
R-0R/W-0R/W-0R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table38.MDIOUserPHYSelectRegister1(USERPHYSEL1)FieldDescriptions
BitFieldValueDescription
31-8Reserved0Reserved
7LINKSELLinkstatusdeterminationselectbit.Defaultvalueis0,whichimpliesthatthelinkstatusis
determinedbytheMDIOstatemachine.Thisistheonlyoptionsupportedonthisdevice.
0ThelinkstatusisdeterminedbytheMDIOstatemachine.
1Notsupported.
6LINKINTENBLinkchangeinterruptenable.Setto1toenablelinkchangestatusinterruptsforthePHYaddress
specifiedinPHYADRMON.Linkchangeinterruptsaredisabledifthisbitissetto0.
0Linkchangeinterruptsaredisabled.
1LinkchangestatusinterruptsforPHYaddressspecifiedinPHYADDRMONbitsareenabled.
5Reserved0PHYaddresswhoselinkstatusistobemonitored.
4-0PHYADRMON0-1FhPHYaddresswhoselinkstatusistobemonitored.
SPRUEQ6–December2007EthernetMediaAccessController(EMAC)/ManagementDataInput/Output(MDIO)83
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