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TMS320C6727,TMS320C6726,TMS320C6722
Floating-PointDigitalSignalProcessors
SPRS268E–MAY2005–REVISEDJANUARY2007
TheUHPIhasseveraldevice-levelconfigurationregisterswhichaffectitsbehavior.Figure4-18,
Figure4-19,andFigure4-20showthebitlayoutoftheseregisters.Table4-12,Table4-13,and
Table4-14containadescriptionofthebitsintheseregisters.
318
Reserved
7543210
ReservedBYTEADFULLNMUXPAGEMENA
R/W,0R/W,0R/W,0R/W,0R/W,0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Figure4-18.CFGHPIRegisterBitLayout(0x40000008)
Table4-12.CFGHPIRegisterBitFieldDescription(0x40000008)
RESETREAD
BITNO.NAMEDESCRIPTION
VALUEWRITE
31:5ReservedN/AN/AReadsareindeterminate.Only0sshouldbewrittentothesebits.
4BYTEAD0R/WUHPIHostAddressType
0=HostAddressisawordaddress
1=HostAddressisabyteaddress
3FULL0R/WUHPIMultiplexingMode(whenNMUX=0)
0=Half-Word(16-bitdata)MultiplexedAddressandDataMode
1=Fullword(32-bitdata)MultiplexedAddressandDataMode
2NMUX0R/WUHPINon-MultiplexedModeEnable
0=MultiplexedAddressandDataMode
1=Non-MultiplexedAddressandDataMode(utilizesoptionalUHPI_HA[15:0]pins).
Hostdatabusis32bitsinNon-Multiplexedmode.SettingthisbitpreventstheEMIF
fromdrivingdataoutor'parking'thesharedEM_D[31:16]/UHPI_HA[15:0]pins.
1PAGEM0R/WUHPIPageModeEnable(OnlyforMultiplexedAddressandDataMode).
0=Full32-bitDSPaddressspecifiedthroughhostport.
1=Onlylower16bitsofDSPaddressarespecifiedthroughhostport.Upper16bits
arerestrictedtothepageselectedbyCFGHPIAMSBandCFGHPIAUMBregisters.
0ENA0R/WUHPIEnable
0=UHPIisdisabled
1=UHPIisenabled.Setthisbitto'1'onlyafterconfiguringtheotherbitsinthis
register.
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