4.12MDIOUserPHYSelectRegister0(USERPHYSEL0)
MDIORegisters
TheMDIOuserPHYselectregister0(USERPHYSEL0)isshowninFigure38anddescribedin
Table36.
Figure38.MDIOUserPHYSelectRegister0(USERPHYSEL0)
3116
Reserved
R-0
15876540
ReservedLINKSELLINKINTENBRsvdPHYADRMON
R-0R/W-0R/W-0R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table36.MDIOUserPHYSelectRegister0(USERPHYSEL0)FieldDescriptions
BitFieldValueDescription
31-8Reserved0Reserved
7LINKSELLinkstatusdeterminationselectbit.Defaultvalueis0,whichimpliesthatthelinkstatusis
determinedbytheMDIOstatemachine.Thisistheonlyoptionsupportedonthisdevice.
0ThelinkstatusisdeterminedbytheMDIOstatemachine.
1Notsupported.
6LINKINTENBLinkchangeinterruptenable.Setto1toenablelinkchangestatusinterruptsforPHYaddress
specifiedinPHYADRMON.Linkchangeinterruptsaredisabledifthisbitissetto0.
0Linkchangeinterruptsaredisabled.
1LinkchangestatusinterruptsforPHYaddressspecifiedinPHYADDRMONbitsareenabled.
5Reserved0Reserved
4-0PHYADRMON0-1FhPHYaddresswhoselinkstatusistobemonitored.
SPRUEQ6–December2007EthernetMediaAccessController(EMAC)/ManagementDataInput/Output(MDIO)81
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