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5.42MACAddressLowBytesRegister(MACADDRLO)
5.43MACAddressHighBytesRegister(MACADDRHI)
EthernetMediaAccessController(EMAC)Registers
TheMACaddresslowbytesregisterusedinaddressmatching(MACADDRLO),isshowninFigure68
anddescribedinTable67.
Figure68.MACAddressLowBytesRegister(MACADDRLO)
3116
Reserved
R-0
15870
MACADDR0MACADDR1
R/W-0R/W-0
LEGEND:R=Readonly;R/W=Read/Write;-n=valueafterreset
Table67.MACAddressLowBytesRegister(MACADDRLO)FieldDescriptions
BitFieldValueDescription
31-16Reserved0Reserved
15-8MACADDR00-FFhMACaddresslower8bits(byte0)
7-0MACADDR10-FFhMACaddressbits15-8(byte1)
TheMACaddresshighbytesregister(MACADDRHI)isshowninFigure69anddescribedinTable68.
Figure69.MACAddressHighBytesRegister(MACADDRHI)
31242316
MACADDR2MACADDR3
R/W-0R/W-0
15870
MACADDR4MACADDR5
R/W-0R/W-0
LEGEND:R/W=Read/Write;-n=valueafterreset
Table68.MACAddressHighBytesRegister(MACADDRHI)FieldDescriptions
BitFieldValueDescription
31-24MACADDR20-FFhMACsourceaddressbits23-16(byte2)
23-16MACADDR30-FFhMACsourceaddressbits31-24(byte3)
15-8MACADDR40-FFhMACsourceaddressbits39-32(byte4)
7-0MACADDR50-FFhMACsourceaddressbits47-40(byte5).Bit40isthegroupbit.Itisforcedto0andreadas0.
Therefore,onlyunicastaddressesarerepresentedintheaddresstable.
104EthernetMediaAccessController(EMAC)/SPRU941A–April2007
ManagementDataInput/Output(MDIO)
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