详细说明：TMS320C6713芯片的实现外扩USB的编程和子程序，USB芯片位Cypress的68001，主机和丛机都已经实现.

文件列表:
  DEC6713_USB
  ...........\cc_build_Debug.log
  ...........\csl6713.lib
  ...........\Debug
  ...........\Debug.lkf
  ...........\Debug.lkv
  ...........\DEC6713.gel
  ...........\DEC6713_USB.paf
  ...........\DEC6713_USB.pjt
  ...........\DEC6713_USB.wks
  ...........\include
  ...........\.......\codec.h
  ...........\.......\codec_iis.h
  ...........\.......\DEC6713.h
  ...........\.......\descriptors.h
  ...........\.......\IIC.h
  ...........\.......\sx2.h
  ...........\.......\type.h
  ...........\.......\usb.h
  ...........\rts6700.lib
  ...........\src
  ...........\...\CODEC.c
  ...........\...\DEC6713.C
  ...........\...\DEC6713_USB.c
  ...........\...\descriptors.c
  ...........\...\IIC.c
  ...........\...\USB.C
  ...........\...\vecs.asm
  ...........\USB.cmd