5.33MACConfigurationRegister(MACCONFIG)
5.34SoftResetRegister(SOFTRESET)
EthernetMediaAccessController(EMAC)Registers
TheMACconfigurationregister(MACCONFIG)isshowninFigure73anddescribedinTable72.
Figure73.MACConfigurationRegister(MACCONFIG)
31242316
TXCELLDEPTHRXCELLDEPTH
R-18hR-44h
15870
ADDRESSTYPEMACCFIG
R-2hR-3h
LEGEND:R=Readonly;-n=valueafterreset
Table72.MACConfigurationRegister(MACCONFIG)FieldDescriptions
BitFieldValueDescription
31-24TXCELLDEPTH0-FFhTransmitcelldepth.IndicatethenumberofcellsinthetransmitFIFO.
23-16RXCELLDEPTH0-FFhReceivecelldepth.IndicatethenumberofcellsinthereceiveFIFO.
15-8ADDRESSTYPE0-FFhAddresstype.
7-0MACCFIG0-FFhMACconfigurationvalue.
Thesoftresetregister(SOFTRESET)isshowninFigure74anddescribedinTable73.
Figure74.SoftResetRegister(SOFTRESET)
3116
Reserved
R-0
1510
ReservedSOFTRESET
R-0R/W-0
LEGEND:R=Readonly;R/W=Read/Write;-n=valueafterreset
Table73.SoftResetRegister(SOFTRESET)FieldDescriptions
BitFieldValueDescription
31-1Reserved0Reserved
0SOFTRESETSoftwarereset.Writinga1tothisbitcausestheEMAClogictobereset.Softwareresetoccurs
whenthereceiveandtransmitDMAcontrollersareinanidlestatetoavoidlockingupthe
Configurationbus.Afterwritinga1tothisbit,itmaybepolledtodetermineiftheresethas
occurred.Ifa1isread,theresethasnotyetoccurred.Ifa0isread,thenaresethasoccurred.
0Asoftwareresethasnotoccurred.
1Asoftwareresethasoccurred.
SPRUEQ6–December2007EthernetMediaAccessController(EMAC)/ManagementDataInput/Output(MDIO)115
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