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TMS320C6454
Fixed-PointDigitalSignalProcessor
SPRS311A–APRIL2006–REVISEDDECEMBER2006
Table7-70.EMAC/MDIOMultiplexedPins(MII,RMII,andGMIIModes)
BALLNUMBERDEVICEPINNAMEMIIRMIIGMII
(MAC_SEL=(MAC_SEL=(MAC_SEL=
00b)01b)10b)
J2MRXD0/RMRXD0MRXD0RMRXD0MRXD0
H3MRXD1/RMRXD1MRXD1RMRXD1MRXD1
J1MRXD2MRXD2MRXD2
J3MRXD3MRXD3MRXD3
L1MRXD4MRXD4
L2MRXD5MRXD5
H2MRXD6MRXD6
M2MRXD7MRXD7
M1MTXD0/RMTXD0MTXD0RMTXD0MTXD0
L4MTXD1/RMTXD1MTXD1RMTXD1MTXD1
M4MTXD2MTXD2MTXD2
K4MTXD3MTXD3MTXD3
L3MTXD4MTXD4
L5MTXD5MTXD5
M3MTXD6MTXD6
N5MTXD7MTXD7
H4MRXER/RMRXERMRXERRMRXERMRXER
H5MRXDVMRXDVMRXDV
J5MTXEN/RMTXENMTXENRMTXENMTXEN
J4MCRS/RMCRSDVMCRSRMCRSDVMCRS
K3MCOLMCOLMCOL
K5GMTCLKGMTCLK
H1MRCLKMRCLKMRCLK
N4MTCLK/REFCLKMTCLKRMREFCLKMTCLK
N3GMDIOMDIOMDIOMDIO
M5GMDCLKMDCLKMDCLKMDCLK
UsingtheRMIIModeoftheEMAC
TheEthernetMediaAccessController(EMAC)containslogicthatallowsittocommunicateusingthe
ReducedMediaIndependentInterface(RMII)protocol.Thislogicmustbetakenoutofresetbeforebeing
used.TousetheRMIImodeoftheEMACfollowthesesteps:
1.EnabletheEMAC/MDIOthroughtheDeviceStateControlRegisters.
–UnlockthePERCFG0registerbywriting0x0F0A0B00tothePERLOCKregister.
–Setbit4inthePERCFG0registerwithin16SYSCLK3clockcyclestoenabletheEMAC/MDIO.
–PollthePERSTAT0registertoverifystatechange.
2.InitializetheEMAC/MDIOasneeded.
3.ReleasetheRMIIlogicfromresetbyclearingtheRMII_RSTbitoftheEMACConfigurationRegister
(seeSection3.4.5).
Asdescribedintheprevioussection,theRMIImodeoftheEMACmustbeselectedbysetting
MACSEL[1:0]=01batdevicereset.
SubmitDocumentationFeedbackC64x+PeripheralInformationandElectricalSpecifications189