公开(公告)号：US20150318728A1

公开(公告)日：2015-11-05

申请号：US14699700

申请日：2015-04-29

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Donald L. Perkins ,  Brigham Steele

IPC: H02J7/00

CPC classification number: G06F13/4282 ,  G06F2213/0042 ,  G06F2213/3812 ,  H02J7/0052

Abstract: A Universal Serial Bus (USB) hub includes a first port that is configured to be switched from a downstream port to an upstream port; a plurality of other ports; and a controller configured to switch a function of the first port from the downstream port to the upstream port responsive to a command from an attached device and further configured to switch at least one of the plurality of other ports from a data and charge port into a port dedicated to charging

Abstract translation: 通用串行总线（USB）集线器包括被配置为从下游端口切换到上游端口的第一端口; 多个其他端口; 以及控制器，其被配置为响应于来自所连接设备的命令将所述第一端口的功能从所述下游端口切换到所述上游端口，并且还被配置为将所述多个其他端口中的至少一个从数据和计费端口切换到 端口专用于充电

公开(公告)号：US20200334174A1

公开(公告)日：2020-10-22

申请号：US16919348

申请日：2020-07-02

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Mark Gordon ,  Ken Nagai ,  Larisa Troyegubova

IPC: G06F13/12 ,  G06F13/42 ,  G06F13/40 ,  G06F13/38

Abstract: An apparatus includes a processor and a machine-readable medium coupled to the processor and comprising instructions. The instructions, when loaded into the processor and executed, configure the processor to identify that a USB element has attached to a USB hub at a port, classify the USB element according to power operations of the USB element, and assign an upstream or downstream setting of the port based upon the classification of the USB element based on power operations of the USB element. The instructions may further configure the processor to classify the USB element as only a producer of power, evaluate whether an enumeration process is initiated within a timeout period, and if so, assign the USB element as a USB host.

公开(公告)号：US10282313B2

公开(公告)日：2019-05-07

申请号：US15799883

申请日：2017-10-31

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Cecil G. Chenault ,  Pragash Mangalapandian ,  Mark Bohm

IPC: G06F13/10 ,  G06F1/26 ,  G06F13/42 ,  G06F13/38

Abstract: A USB smart hub may provide enhanced battery charging, data storage security, vendor matching, device authentication, data capture/debug, and role switching. The smart hub may include an upstream port, a plurality of downstream ports, a processor, and a memory coupled to the processor for storing USB host stack code and configuration parameters. The smart hub may include a USB hub core having a core to implement a standard USB hub interface. The smart hub may include a plurality of 2:1 multiplexors coupled between the downstream ports, the core downstream ports, and the processor. The processor may control the 2:1 multiplexors. The processor may be configured to detect when a USB device is coupled to a downstream port and to run the USB host stack code and to enumerate the USB device. The processor may provide enhanced features based on the configuration parameters.

公开(公告)号：US20180336154A1

公开(公告)日：2018-11-22

申请号：US15901937

申请日：2018-02-22

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Rekha Edamalapati ,  Vinoth Sekar

IPC: G06F13/40 ,  G06F13/42

CPC classification number: G06F13/4068 ,  G06F13/4027 ,  G06F13/4045 ,  G06F13/4282 ,  G06F2213/0042 ,  G06F2213/4004

Abstract: A universal serial bus (USB) hub includes an upstream port configured to be communicatively coupled to a USB host, a downstream port, and a USB hub core circuit. The circuit is configured to determine a detachment from the downstream port, determine whether a USB element has reattached to the downstream port in USB mode, and, based on a determination that the USB element has reattached to the downstream port in USB host mode, perform USB multi-host bridging for the USB host and the USB element.

公开(公告)号：US10127181B2

公开(公告)日：2018-11-13

申请号：US14699700

申请日：2015-04-29

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Donald L. Perkins ,  Brigham Steele

IPC: G06F13/42 ,  H02J7/00

Abstract: A Universal Serial Bus (USB) hub includes a first port that is configured to be switched from a downstream port to an upstream port; a plurality of other ports; and a controller configured to switch a function of the first port from the downstream port to the upstream port responsive to a command from an attached device and further configured to switch at least one of the plurality of other ports from a data and charge port into a port dedicated to charging.

公开(公告)号：US09804977B2

公开(公告)日：2017-10-31

申请号：US14698428

申请日：2015-04-28

Applicant: Microchip Technology Incorporated

Inventor： Atish Ghosh ,  Cecil G. Chenault ,  Pragash Mangalapandian ,  Mark Bohm

IPC: G06F3/00 ,  G06F5/00 ,  G06F13/12 ,  G06F13/00 ,  G06F13/20 ,  G06F13/10 ,  G06F13/38 ,  G06F1/26 ,  G06F13/42

CPC classification number: G06F13/102 ,  G06F1/266 ,  G06F13/387 ,  G06F13/4282 ,  G06F13/4295 ,  G06F2213/3812 ,  G06F2213/4004

Abstract: A USB smart hub may provide enhanced battery charging, data storage security, vendor matching, device authentication, data capture/debug, and role switching. The smart hub may include an upstream port, a plurality of downstream ports, a processor, and a memory coupled to the processor for storing USB host stack code and configuration parameters. The smart hub may include a USB hub core having a core to implement a standard USB hub interface. The smart hub may include a plurality of 2:1 multiplexors coupled between the downstream ports, the core downstream ports, and the processor. The processor may control the 2:1 multiplexors. The processor may be configured to detect when a USB device is coupled to a downstream port and to run the USB host stack code and to enumerate the USB device. The processor may provide enhanced features based on the configuration parameters.