14.8暂停/恢复管理............................................. ............................. 93

14.9 USB中断系统.............................................. ............................................ 95

14.10寄存器...........................................................................................................97

15多媒体卡控制器.............................................. ................... 108

15.1卡概念....................................................................................................108

15.2总线的概念......................................................................................................108

15.3说明........................................................................................................113

15.4时钟发生器............................................... ................................................. 114

15.5命令行控制.............................................. ................................... 114

15.6数据线控制器.............................................. ............................................ 116

15.7中断.............................................................................................................122

15.8寄存器...........................................................................................................123

16 IDE / ATAPI接口............................................. ................................ 130

16.1说明........................................................................................................130

16.2寄存器...........................................................................................................132

17串行I / O端口............................................ ........................................... 133

17.1模式选择..................................................................................................133

17.2波特率发生器.............................................. .......................................... 133

17.3同步模式（模式0 ） ........................................... ................................. 134

17.4异步模式（模式1,2和3） ....................................... .................. 136

17.5多处理器通信（模式2和模式3 ） ......................................... ..... 139

17.6自动地址识别.............................................. .......................... 140

17.7中断.............................................................................................................141

17.8寄存器...........................................................................................................142

18同步外设接口.............................................. ....... 146

18.1说明........................................................................................................147

18.2中断.............................................................................................................150

18.3配置.....................................................................................................150

18.4寄存器...........................................................................................................155

19两线接口（ TWI ）控制器......................................... .......... 157

19.1说明........................................................................................................157

19.2寄存器...........................................................................................................171

20模数转换器............................................. ................... 173

20.1说明........................................................................................................173

210

AT8xC51SND1C

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