发明申请
US20050120146A1 Single-Chip USB Controller Reading Power-On Boot Code from Integrated Flash Memory for User Storage
有权
单芯片USB控制器从用于存储用户的集成闪存读取上电启动代码
- 专利标题： Single-Chip USB Controller Reading Power-On Boot Code from Integrated Flash Memory for User Storage
- 专利标题（中）： 单芯片USB控制器从用于存储用户的集成闪存读取上电启动代码
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申请号： US10707277申请日： 2003-12-02
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公开(公告)号： US20050120146A1公开(公告)日： 2005-06-02
- 发明人: Ben Wei Chen , Horng-Yee Chou , Sun-Teck See , Charles Lee
- 申请人： Ben Wei Chen , Horng-Yee Chou , Sun-Teck See , Charles Lee
- 申请人地址： US CA San Jose
- 专利权人： SUPER TALENT ELECTRONICS INC.
- 当前专利权人： SUPER TALENT ELECTRONICS INC.
- 当前专利权人地址： US CA San Jose
- 主分类号： G06F13/28
- IPC分类号： G06F13/28
摘要：
A Universal-Serial-Bus (USB) single-chip flash device contains a USB flash microcontroller and flash mass storage blocks containing flash memory arrays that are block-addressable rather than randomly-addressable. USB packets from a host USB bus are read by a serial engine on the USB flash microcontroller. Various routines that execute on a CPU in the USB flash microcontroller are activated in response to commands in the USB packets. A flash-memory controller in the USB flash microcontroller transfers data from the serial engine to the flash mass storage blocks for storage. Rather than boot from an internal ROM coupled to the CPU, a boot loader is transferred by DMA from the first page of the flash mass storage block to an internal RAM. The flash memory is automatically read from the first page at power-on. The CPU then executes the boot loader from the internal RAM to load the control program.
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