Texas Instruments TMS320DM643x DMP Switch User Manual


 
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5.40ReceivePauseTimerRegister(RXPAUSE)
5.41TransmitPauseTimerRegister(TXPAUSE)
EthernetMediaAccessController(EMAC)Registers
Thereceivepausetimerregister(RXPAUSE)isshowninFigure66anddescribedinTable65.
Figure66.ReceivePauseTimerRegister(RXPAUSE)
3116
Reserved
R-0
150
PAUSETIMER
R-0
LEGEND:R=Readonly;-n=valueafterreset
Table65.ReceivePauseTimerRegister(RXPAUSE)FieldDescriptions
BitFieldValueDescription
31-16Reserved0Reserved
15-0PAUSETIMER0-FFhReceivepausetimervalue.Thesebitsallowthecontentsofthereceivepausetimertobe
observed.ThereceivepausetimerisloadedwithFF00hwhentheEMACsendsanoutgoingpause
frame(withpausetimeofFFFFh).Thereceivepausetimerisdecrementedatslottimeintervals.If
thereceivepausetimerdecrementsto0,thenanotheroutgoingpauseframeissentandthe
load/decrementprocessisrepeated.
Thetransmitpausetimerregister(TXPAUSE)isshowninFigure67anddescribedinTable66.
Figure67.TransmitPauseTimerRegister(TXPAUSE)
3116
Reserved
R-0
150
PAUSETIMER
R-0
LEGEND:R=Readonly;-n=valueafterreset
Table66.TransmitPauseTimerRegister(TXPAUSE)FieldDescriptions
BitFieldValueDescription
31-16Reserved0Reserved
15-0PAUSETIMER0-FFhTransmitpausetimervalue.Thesebitsallowthecontentsofthetransmitpausetimertobe
observed.Thetransmitpausetimerisloadedbyareceived(incoming)pauseframe,andthen
decrementedatslottimeintervalsdownto0,atwhichtimeEMACtransmitframesareagain
enabled.
SPRU941AApril2007EthernetMediaAccessController(EMAC)/103
ManagementDataInput/Output(MDIO)
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