U Disk Read-Write System Based on TI 5409 DSPs

In order to make DSP(Digital Signal Processing)system have the ability of mass storage,software upgrade,data updating,data exchange and USB(Universal Serial Bus)device drive,a kind of U disk read- write system based on TI 5409 DSPs and CH375 USB Host/Slave interface chip have been designed and imple- mented.The U disk read-write system can support hot inserting and pulling out of the U disk,identify and con- figure the U disk automatically,read or write data steadily in the U disk based on sector and read or write files steadily in the U disk.