公开(公告)号：US20160231793A1

公开(公告)日：2016-08-11

申请号：US15130090

申请日：2016-04-15

Applicant: Socionext Inc.

Inventor： Takashi OYAMA ,  Kuniaki IWANO ,  Masakazu SATO ,  Soichi HAGIWARA

IPC: G06F1/26

Abstract: When an electronic apparatus including a core chip and a hub controller chip is connected to an apparatus on the host side, a USB hub controller in the hub controller chip executes a process on a configuration between the USB hub controller and the apparatus on the host side and sets a limit value of power to be supplied, from a first limit value to a second limit value higher than the first limit value, and a VBUS current controller in the hub controller chip supplies the core chip with a power supply voltage generated based on a supplied power, which allows to maintain a configuration state between the apparatus on the host side and the USB hub controller at a time of starting up or at a time of class switching of the core chip and supply the core chip with the sufficient power.

Abstract translation: 当包括核心芯片和集线器控制器芯片的电子装置连接到主机侧的装置时，集线器控制器芯片中的USB集线器控制器执行USB集线器控制器与主机侧的装置之间的配置的处理 并且从第一限制值到高于第一限制值的第二限制值设定要提供的功率的限制值，并且集线器控制器芯片中的VBUS电流控制器向核心芯片提供基于 提供的电力，其允许在启动时或核心芯片的类切换时保持主机侧的装置与USB集线器控制器之间的配置状态，并以足够的功率供应芯片芯片。