W83627SF

8.3.7

8.3.8

8.3.9

tFifo （测试FIFO模式）模式= 110 ......................................... ............................................ 56

cnfgA （配置寄存器A）模式= 111 ......................................... ............................. 56

cnfgB （配置寄存器B）模式= 111 ......................................... ............................. 56

8.3.10 ECR （扩展控制寄存器）模式=所有...................................... ................................... 57

8.3.11位图ECP端口寄存器的......................................... .................................................. ..58

8.3.12 ECP引脚说明...........................................................................................................59

8.3.13 ECP操作.....................................................................................................................60

8.3.14 FIFO操作....................................................................................................................60

8.3.15 DMA传输.....................................................................................................................61

8.3.16可编程I / O（ NON - DMA ）模式..................................... ............................................... 61

8.4

8.5

9.

9.1

9.2

9.3

9.4

9.5

扩展FDD模式（ EXTFDD ） ............................................ ........................................... 61

扩展2FDD模式（ EXT2FDD ） ............................................ ....................................... 61

输出缓冲器...................................................................................................................... 63

输入缓冲器......................................................................................................................... 63

状态Register................................................................................................................... 63

命令......................................................................................................................... 64

硬件GATEA20 /键盘复位控制逻辑.................................... 66

9.5.1

9.5.2

KB控制寄存器（逻辑器件5 ， CR- F0 ） ...................................... ................................ 66

92端口控制寄存器（默认值= 0X24 ） ........................................ .......................... 66

键盘控制器....................................................................................................... 62

10.

11.

通用I / O ........................................................................................................... 67

即插即用配置.............................................. ........................................... 69

11.1兼容即插即用................................................................................................................. 70

11.1.1扩展功能寄存器............................................ .................................................. 0.70

11.1.2扩展功能使能寄存器（ EFERs ） ........................................ ........................... 71

11.1.3扩展功能变址寄存器（ EFIRs ） ，扩展功能数据寄存器（ EFDRs ） 0.71

11.2配置Sequence..................................................................................................... 71

11.2.1进入扩展功能模式.......................................... ............................................. 71

11.2.2 Configurate配置寄存器........................................... ...................................... 71

11.2.3退出扩展功能模式.......................................... ................................................ 71

11.2.4软件编程实例............................................ ............................................... 72

12.

13.

ACPI寄存器FEATURES................................................................................................... 73

智能卡INTERFACE........................................................................................................ 74

13.1接收缓冲寄存器（ RBR ，只读取"base地址+ 0"时BDLAB = 0 ） ....... 74

13.2发送缓冲寄存器（ TBR ，只写在"base地址+ 0"时BDLAB = 0 ） ... 74

13.3中断控制寄存器（ ICR ，在"base地址+ 1"时BDLAB = 0 ） ....................... 74

13.4中断状态寄存器（ ISR ，只读在"base地址+ 2" ） ................................... 75 ..

13.5智能卡FIFO控制寄存器（ SCFR ，只写在"base地址+ 2" ） ................. 76

13.6智能卡控制寄存器（ SCCR ，只写在"base地址+ 3" ） .......................... 77

13.7中断使能寄存器（ IER ，在"base地址+ 4" ） ..................................... ............... 77

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