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TMS320C6454
Fixed-PointDigitalSignalProcessor
SPRS311A–APRIL2006–REVISEDDECEMBER2006
Table2-3.TerminalFunctions(continued)
SIGNAL
TYPE
(1)
IPD/IPU
(2)
DESCRIPTION
NAMENO.
AEA10/MACSEL1M25
•EMAC/MDIOinterfaceselectbits(MACSEL[1:0])
Therearetwoconfigurationpins—MACSEL[1:0]—toselectthe
AEA9/MACSEL0M27
EMAC/MDIOinterface.
AEA8/PCI_EEAIP25
AEA[10:9]:MACSEL[1:0]
AEA7N27
00-10/100EMAC/MDIOMIIModeInterface(default)
01-10/100EMAC/MDIORMIIModeInterface
AEA6/PCI66U27
10-10/100/1000EMAC/MDIOGMIIModeInterface
AEA5/MCBSP1_ENU28
11-10/100/1000withRGMIIModeInterface
AEA4/[RGMIIinterfacerequiresa1.8Vor1.5VI/Osupply]
T28
SYSCLKOUT_EN
•PCII2CEEPROMAuto-Initialization(PCI_EEAI)
AEA3T27
AEA8:PCIauto-initializationviaexternalI2CEEPROM
IfthePCIperipheralisdisabled(PCI_ENpin=0),thispinmustnotbe
AEA2/CFGGP2T26
pulledup.
AEA1/CFGGP1U26
0-PCIauto-initializationthroughI2CEEPROMisdisabled(default).
1-PCIauto-initializationthroughI2CEEPROMisenabled.
•PCIFrequencySelection(PCI66)
[ThePCIperipheralneedsbeenabled(PCI_EN=1)tousethisfunction]
SelectsthePCIoperatingfrequencyof66MHzor33MHzPCIoperating
frequencyisselectedatresetviathepullup/pulldownresistoronthePCI66
pin:
AEA6:
O/ZIPD
0-PCIoperatesat33MHz(default).
1-PCIoperatesat66MHz.
Note:IfthePCIperipheralisdisabled(PCI_EN=0),thispinmustnotbe
pulledup.
•McBSP1Enablebit(MCBSP1_EN)
SelectswhichfunctionisenabledontheMcBSP1/GPIOmuxedpins
AEA5:
AEA0/CFGGP0U25
0-GPIOpinfunctionsenabled(default).
1-McBSP1pinfunctionsenabled.
•SYSCLKOUTEnablebit(SYSCLKOUT_EN)
SelectswhichfunctionisenabledontheSYSCLK4/GP[1]muxedpin
AEA4:
0-GP[1]pinfunctionoftheSYSCLK4/GP[1]pinenabled(default).
1-SYSCLK4pinfunctionoftheSYSCLK4/GP[1]pinenabled.
•ConfigurationGPI(CFGGP[2:0])(AEA[2:0])
Thesepinsarelatchedduringresetandtheirvaluesareshowninthe
DEVSTATregister.Thesevaluescanbeusedbysoftwareroutinesforboot
operations.
AEA3:
ForproperC6454deviceoperation,theAEA3pinmustbepulleddowntoV
SS
witha1-kΩresistoratdevicereset.
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