USB host controllers follow one of two standards: UHCI (Universal host controller Interface) or OHCI (Open host controller Interface).
usb主机控制器遵循两个标准之一：UHCI(通用主机控制器接口)或OHCI(开放式主机控制器接口)。
The paper presents the interface specification of USB host controller based on UHCI, analyzes the implementation of hardware layer in USB stack.
介绍基于UHCI的USB主机系统的硬件核心主机控制器接口规范，分析US B协议栈的硬件层实现。
When some microprocessors working with USB equipments in embedded systems without their own USB controller, their USB interface must be expanded.
对于多款微处理器本身没有USB的控制器，为了在嵌入式系统中使用USB设备，需要自行扩展usb接口。
PDIUSBD12 may be used for implementing the interface between the parallel bus of the micro-controller and USB. With PDIUSBD12, users can implement multiple classes of USB functions.
PDIUSBD 12芯片能够实现微控制器的并行总线到总线的接口功能，使用芯片可以实现多种类型的外设。
This controller can communicate directly with the PC computer through the serial port, or through the can interface helped with the CAN-USB conversion devices.
本控制器可通过串口直接与上位机通信，亦可借助于CAN- USB转换器件，通过CAN接口实现与上位机通信。
A boundary scan controller with the USB interface is designed. DSP and 74lvt8980 are adopted to control the boundary scan bus.
采用DSP和边界扫描总线控制芯片74lvt8980设计边界扫描测试控制器。
A boundary scan controller with the USB interface is designed. DSP and 74lvt8980 are adopted to control the boundary scan bus.
采用DSP和边界扫描总线控制芯片74lvt8980设计边界扫描测试控制器。
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