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AVR单片机SPI 181
19 USB控制器............................................... ....................................... 183
19.1特点............................................................................................................183
19.2框图...................................................................................................183
19.3典型应用的实现.............................................. ..................... 184
19.4一般工作模式.............................................. ................................... 187
19.5功率模式....................................................................................................190
19.6内存管理............................................... ........................................ 190
19.7 PAD暂停....................................................................................................191
19.8 D + / D-读/写.......................................... .................................................. ... 192
19.9寄存器说明............................................... .......................................... 193
19.10 USB软件操作模式............................................. ........................ 194
20 USB设备工作模式............................................. ............... 196
20.1简介........................................................................................................196
20.2上电和复位............................................ ............................................... 196
20.3端点复位...................................................................................................196
20.4 USB复位..........................................................................................................197
20.5端点选择............................................... .............................................. 197
20.6端点激活............................................... ............................................. 197
20.7地址设置...................................................................................................198
20.8暂停，唤醒和恢复.......................................... ............................ 199
20.9分离...............................................................................................................199
20.10远程唤醒............................................. ............................................... 200
20.11失速请求............................................... ................................................. 200
20.12 Control端点管理.............................................. .................... 201
20.13 OUT端点管理.............................................. .............................. 202
20.14 IN端点管理.............................................. .................................. 204
20.15同步模式............................................... ............................................ 206
20.16溢出..........................................................................................................206
20.17中断.........................................................................................................207
20.18寄存器.........................................................................................................208
21 PS / 2 ....................................................................................................... 220
21.1特点...................................................................................................220
22模拟比较器............................................... .............................. 223
iv
AT90USB82/162
7707F–AVR–11/10
