US 10,372,660 B2Granted

Extensible host controller and an operation method thereof

AssigneeeEver Technology, Inc.

InventorChih-Hung Huang

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Abstract

An extensible host controller (xHC) applied to a host includes universal serial bus (USB) module, a control circuit, an xHC interface circuit, a peripheral component interconnect express (PCIE) bus. The USB module includes a USB interface circuit and a predetermined interface circuit. The PCIE bus supports a USB mode and a predetermined data transmission mode. When a USB device is connected to the USB module, the control circuit issues first requests to the USB device to let the host utilize the USB mode and the USB interface circuit to communicate with the USB device; and when a USB host is connected to the USB module, the control circuit responds to second requests issued from the USB host to let the host utilize the predetermined data transmission mode and the predetermined interface circuit to communicate with the USB host.

Claims8

Dependent claims

An extensible host controller (xHC), wherein the extensible host controller is applied to a host, the extensible host controller comprising:

a universal serial bus (USB) module, wherein the USB module comprises a USB interface circuit, a debug capability unit and a USB physical layer, wherein the debug capability unit has a debug function and a network transmission function, and the USB interface circuit and the debug capability unit are connected to the USB physical layer;
a control circuit;
an xHC interface circuit coupled to the USB interface circuit;
and
a peripheral component interconnect express (PCIE) bus coupled to the xHC interface circuit and the control circuit, wherein the PCIE bus supports a USB mode and a predetermined data transmission mode;
wherein when a USB device is connected to the USB module, the control circuit makes the host utilize the USB mode and the USB interface circuit to communicate with the USB device;
and when a USB host is connected to the USB module, the control circuit makes the host utilize the predetermined data transmission mode and the debug capability unit to communicate with the USB host, rather than utilizing the USB mode and the USB interface circuit to communicate with the USB host.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/259,066Filed 8 Sep 2016
Published: US 2018/0067891 A18 Mar 2018
Granted: 6 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 13/4282
Bus transfer protocol, e.g. handshake; Synchronisation: on a serial bus, e.g. I2C bus, SPI bus
G06F 13/387
Using universal interface adapter: for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters…
G06F 13/4022
Coupling between buses: using switching circuits, e.g. switching matrix, connection or expansion network
G06F 11/3051
Monitoring: monitoring arrangements for monitoring the configuration of the computing system or of the computing system component, e.g. monitoring…

Family

US 2018/0067891 A1Pre-grant publication · published 8 Mar 2018
US 10,372,660 B2This patent

From the US filing history. Foreign family members aren’t listed.

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