基于PCI设备的DMA传输建模与分析.pdfVIP

. 2 0 11. 19 ( 4) 972 Computer Measurement Control : 2011) : T P3167 : A PCI DMA 王 波, 郭 建 ( , 471009) : , DMA PCI , WDF DMA LVDS , DMA , , 80MB/ s, , , : PCI ; ; ; W DF A Modeling and Analysis of DMA Based PCI W ngBo, GuoJi n ( Chin Airborne Missile Ac dem y, Luoy ng 47 1009, Chin ) Abstract: In view of current h igh- speed d t cquisition system h s h igher requir ements in th e re of speed nd ccur cy, th e p per in troduces PCI interf ce d t cquisition c rd b sed DMA, focuses on driver developm ent process of the combining technologies of interrupt nd DMA to collect LVDS sign l used W DF, nd comp res the DMA tr nsfer mode with the gener l on e, fin lly n lysis th e experiment l re sults, it show s th t the d t tr nsfer r te using DMA re ch 80 M B / s, fter repe ted testing, the equipment is st ble nd reli ble, fully meet th e current n eeds. Key words: PCI bus; DM A; driver; W DF 0 RA M 1 PCI PCI 32 , 33MH z , 132 ~ 264M b/ s, , Memory CPU , DM A , , DMA CPU PCI , WDF , DMA , , Memory 1 1 , FIFO , , FIFO , FP GA P CI9054 Loc l , P CI9054 PCI INTA , , , , , FIFO , , , , , FIFO FIFO FPGA PCI : : : ( 1976) , , , ,