增强的超级I / O控制器， LPC接口

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目录

1

2

3

3.1

3.2

概述................................................ .............................................. 8

引脚配置................................................ ........................................... 9

引脚功能说明.............................................. ..................... 10

缓存类型Descriptions................................................................................................................................14

需要外部上拉引脚Resistors................................................................................................14

4

5

6

7

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

框图................................................ ............................................... 15

参考文件................................................ ................................ 16

3伏操作/ 5 VOLT公差........................................... .......... 17

功耗功能................................................ ................................... 18

VCC电源.......................................................................................................................................................18

VTR支持....................................................................................................................................................18

内部PWRGOOD .........................................................................................................................................18

32.768 kHz的时钟滴流输入.......................................................................................................................18

32kHz的时钟指示...............................................................................................................................18

涓流电源Functionality............................................................................................................................19

VREF引脚..........................................................................................................................................................20

最大电流值...............................................................................................................................20

电源管理事件（ PME / SCI ） ..........................................................................................................20

8

8.1

8.2

8.3

8.3.1

8.3.2

8.3.3

功能说明................................................ ............................. 21

超级I / O寄存器.........................................................................................................................................21

主处理器接口（ LPC ） .....................................................................................................................21

LPC INTERFACE..............................................................................................................................................21

LPC接口信号Definition.........................................................................................................................................21

LPC周期.......................................................................................................................................................................22

字段定义................................................................................................................................................................22

8.4

8.4.1

8.4.2

8.4.3

8.4.4

8.4.5

动力Management.........................................................................................................................................23

CLOCKRUN协议.......................................................................................................................................................23

典型用法...................................................................................................................................................................23

SYNC Timeout..................................................................................................................................................................23

同步模式和最大数量SYNCS...........................................................................................................23

同步错误指示......................................................................................................................................................23

8.5

8.5.1

LPC传输序列的例子................................................................................................................25

等待状态Requirements..................................................................................................................................................25

9

9.1

软盘控制器............................................... ............................. 26

FDC内部Registers....................................................................................................................................26

10

11

12

13

14

15

15.1

15.2

命令集/说明.............................................. ......................... 42

指令集................................................ .............................................. 45

串口（ UART ） ............................................. ............................................ 64

串行Data............................................................................................................ 68

红外接口................................................ ...................................... 77

MPU- 401 MIDI UART ............................................. ............................................... 78

Overview.......................................................................................................................................................78

主持人Interface...............................................................................................................................................78

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修订版2005年2月2日

SMSC DS - LPC47M112

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