DSP5509 s USB implemented method for your reference。

exam_USBBoot\boot_img\boot_img.asm
............\........\boot_img.cmd
............\........\boot_img.paf
............\........\boot_img.pjt
............\........\boot_img.wks
............\........\cc_build_Debug.log
............\........\Debug\boot_img.map
............\........\.....\boot_img.obj
............\........\.....\boot_img.out
............\........\Debug.lkf
............\........\Debug.lkv
............\boot_img.bin
............\boot_img.bxp
............\boot_img.out
............\.....table\boot_img.bin
............\..........\boot_img.bxp
............\..........\boot_img.out
............\..........\serial8bin.cmd
............\hex.bat
............\...55\hex55.exe
............\hex55.exe
............\readme.txt
............\serial8bin.cmd
............\Status.MEW
............\usb boot.pdf
............\USB boot测试说明.doc
............\usbio\usbio_ti.inf
............\.....\usbio_ti.sys
............\usbio.rar
............\USBIOAPP.exe
............\boot_img\Debug
............\boot_img
............\boot_table
............\hex55
............\usbio
exam_USBBoot

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