pci 总线及其应用

pci总线及其应用，referstoterminationrequestedbeforeanydataistransferredbecausethetargetisbusyandtemporarilyunabletoprocessthetransaction.ThetargetsignalsRetrybyassertingSTOP#andnotassertingTRDY#.iscomposedofanaddressphaseandoneormoredataphases.PCIsupportsburstsinbothM