慕课嵌入式开发及应用(第四章.USB基本概念及从机编程方法)

傷城~ 2023-05-28 08:29 51阅读 0赞

### 慕课苏州大学.嵌入式开发及应用.第四章.较复杂通信模块.USB基本概念及从机编程方法 ###

*  0 目录
 *  4 较复杂通信模块
 *   *  4.4 USB基本概念及从机编程方法
     *   *  4.4.1 课堂重点
         *  4.4.2 测试与作业
 *  5 下一章

# 0 目录 #

# 4 较复杂通信模块 #

## 4.4 USB基本概念及从机编程方法 ##

### 4.4.1 课堂重点 ###

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### 4.4.2 测试与作业 ###

> 下面关于USB的描述中不正确的有  
> A.USB进行数据传输时的对象主要分为USB主机和USB设备两个。  
> B.USB主机指的是包含USB主控制器，并且能够控制完成与USB设备之间数据传输的设备。  
> C.USB设备又称作USB从机，是具有某种功能的逻辑或物理实体。  
> D.USB通信是双向的，可以由USB主机发起，也可以由USB设备发起。  
> 正确答案：D

> 1USB支持多种类型的传输模式，不包括:  
> A.块传输。B.中断传输。C.异步传输。D.控制传输。  
> 正确答案：C

> 2USB总线使用差分信号传输数据，有利于保证数据的完整性和消除噪声干扰。  
> A.B.  
> 正确答案：A

> 3KL25作为USB设备时的驱动构件中主要包括哪些函数？  
> 正确答案：初始化、枚举处理、发送数据和接收数据四个函数。

# 5 下一章 #

**博客地址:**

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