PC87372
目录
9.0
（续）
传统的功能模块
9.1
软盘控制器（ FDC ） ............................................ ......................................... 110
9.1.1
概述................................................ .................................................. 。 110
9.1.2
FDC位图摘要............................................... ................................................ 111
并行端口.................................................................................................................... 112
9.2.1
概述................................................ .................................................. 。 112
9.2.2
并行端口寄存器映射.............................................. ........................................... 112
9.2.3
并行端口位图摘要.............................................. .................................... 113
UART的功能（串口） ............................................ .................................. 115
9.3.1
概述................................................ .................................................. 。 115
9.3.2
UART的寄存器组简介.............................................. ................................... 115
9.3.3
SP寄存器映射..................................................................................................... 115
9.3.4
SP位图摘要............................................... ................................................. 117
键盘和鼠标控制器（ KBC ） ........................................... ....................... 119
9.4.1
概述................................................ .................................................. 。 119
9.4.2
KBC寄存器映射..................................................................................................... 120
9.4.3
KBC位图摘要............................................... ................................................ 120
9.2
9.3
9.4
10.0
设备特点
10.1
一般DC电气特性.............................................. ................. 121
10.1.1推荐工作条件............................................ ........................... 121
10.1.2绝对最大额定值............................................ ........................................... 121
10.1.3电容.............................................................................................................. 121
在推荐工作条件10.1.4功耗............................ 122
10.1.5电压阈值............................................. .................................................. ..... 122
引脚直流特性，由I / O缓冲区类型....................................... ......... 123
10.2.1输入，TTL兼容........................................... .................................................. 123 ..
10.2.2输入，TTL兼容，与施密特触发器....................................... ...................... 123
10.2.3输入，TTL兼容， 400 mV的施密特触发器..................................... ........... 123
10.2.4输入， PCI 3.3V兼容......................................... .............................................. 124
10.2.5模拟输入.............................................................................................................. 124
10.2.6输出， TTL / CMOS兼容，推挽式缓冲.................................... ................ 124
10.2.7输出， TTL / CMOS兼容，开漏缓冲器.................................... ............. 124
10.2.8输出， PCI 3.3V兼容......................................... ........................................... 125
10.2.9模拟输出............................................................................................................ 125
10.2.10输入/输出开关， SMBus兼容........................................ .......................... 125
10.2.11例外................................................................................................................. 125
10.2.12术语............................................................................................................... 126
内部电阻......................................................................................................... 127
10.3.1上拉电阻......................................................................................................... 127
10.3.2下拉电阻........................................... .................................................. ....... 127
AC电气特性............................................... ................................... 128
10.4.1交流测试条件............................................ .................................................. ...... 128
10.4.2复位时序............................................................................................................. 129
10.4.3时钟时序.............................................................................................................. 131
10.2
10.3
10.4
修订版1.2
9
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