公开(公告)号：US08930587B2

公开(公告)日：2015-01-06

申请号：US13868367

申请日：2013-04-23

Applicant: MediaTek Inc.

Inventor： Yi-Wen Chien

IPC: G06F3/00 ,  G06F13/38

Abstract: Universal Serial Bus (USB) devices supporting super speed and non-super speed connections for communication with a host device includes a plurality of endpoints (EPs), a non-super speed connection port, a super speed connection port and a configuration unit. The non-super speed connection port and the super speed connection port are connected to the host device. The configuration unit is arranged for dividing the EPs to first and second groups of EPs according to a bandwidth requirement, determining whether a super speed connection with the host device is successfully established and configuring the first group of EPs to operate at a super speed and configuring the second group of EPs to operate at a non-super speed when the super speed connection with the host device is successfully established such that the USB device communicates with the host device at both the super speed and the non-super speed.

公开(公告)号：US08954623B2

公开(公告)日：2015-02-10

申请号：US13868367

申请日：2013-04-23

Applicant: MediaTek Inc.

Inventor： Yi-Wen Chien

IPC: G06F3/00 ,  G06F13/38

CPC classification number: G06F13/385

Abstract: Universal Serial Bus (USB) devices supporting super speed and non-super speed connections for communication with a host device includes a plurality of endpoints (EPs), a non-super speed connection port, a super speed connection port and a configuration unit. The non-super speed connection port and the super speed connection port are connected to the host device. The configuration unit is arranged for dividing the EPs to first and second groups of EPs according to a bandwidth requirement, determining whether a super speed connection with the host device is successfully established and configuring the first group of EPs to operate at a super speed and configuring the second group of EPs to operate at a non-super speed when the super speed connection with the host device is successfully established such that the USB device communicates with the host device at both the super speed and the non-super speed.

Abstract translation: 支持用于与主机设备通信的超速和非超速连接的通用串行总线（USB）设备包括多个端点（EP），非超速连接端口，超速连接端口和配置单元。 非超速连接端口和超速连接端口连接到主机设备。 配置单元被配置为根据带宽要求将EP划分到第一和第二组EP，确定是否成功建立了与主机设备的超速连接，并配置第一组EP以超速运行并配置 当与主机设备的超速连接成功建立时，第二组EP以非超速运行，使得USB设备以超速和非超速与主机设备进行通信。

公开(公告)号：US20170147517A1

公开(公告)日：2017-05-25

申请号：US15221589

申请日：2016-07-27

Applicant: MEDIATEK INC.

Inventor： Shin-Shiun Chen ,  Yi-Wen Chien ,  Yao-Chun Su ,  Chih-Kang Lin

IPC: G06F13/28 ,  G06F13/16 ,  G06F13/42 ,  G06F13/40

CPC classification number: G06F13/28 ,  G06F13/1673 ,  G06F13/4022 ,  G06F13/4282

Abstract: A direct memory access (DMA) system is implemented in an electronic device that communicates with a host device via a communication bus, and includes an available descriptor notification circuit and a DMA controller. The available descriptor notification circuit indicates whether at least one valid descriptor is available in the host device. The available descriptor notification circuit is set by at least the host device. The at least one valid descriptor records DMA data transfer control information. The DMA controller fetches the at least one valid descriptor from the host device when the available descriptor notification circuit indicates that the at least one valid descriptor is available in the host device, and refers to the at least one valid descriptor fetched from the host device to perform a DMA data transfer between the electronic device and the host device.