Invention Grant
US08386725B2 USB host controller and controlling method for USB host controller
失效
USB主机控制器和USB主机控制器的控制方法
- Patent Title: USB host controller and controlling method for USB host controller
- Patent Title (中): USB主机控制器和USB主机控制器的控制方法
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Application No.: US12656562Application Date: 2010-02-03
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Publication No.: US08386725B2Publication Date: 2013-02-26
- Inventor: Kunihiro Kondo
- Applicant: Kunihiro Kondo
- Applicant Address: JP Kawasaki-shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-shi, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2009/40550 20090224
- Main IPC: G06F13/14
- IPC: G06F13/14

Abstract:
The present invention aims to provide a USB host controller capable of reducing time for a data transfer between storage devices. A USB host controller according to the present invention includes a buffer memory for USB pipe having a first buffer memory region and a second buffer memory region, and a buffer memory controller configured to control a data transfer between the buffer memory for USB pipe and each of first and second devices. The buffer memory controller stores data from the first device in the first buffer memory region, swaps address information corresponding to the first buffer memory region and address information corresponding to the second buffer memory region, and transfers data stored in the first buffer memory region to the second device, on the basis of the address information corresponding to the first buffer memory region after the swapping.
Public/Granted literature
- US20100217942A1 USB host controller and controlling method for USB host controller Public/Granted day:2010-08-26
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