W83977TF_集成电路资料查询网

W83977TF
发行 释放 日期: march 1998
-III- 修订 0.62
3.2 数据 和 ecpa先进先出 端口 ...........................................................................................56
3.3 设备 状态寄存器 (dsr) .................................................................................56
3.4 设备 control 寄存器 (dcr) .............................................................................57
3.5 cfifo (parallel 端口 数据 先进先出) 模式 = 010......................................................58
3.6 ecpdfifo (ecp数据 先进先出) 模式 = 011 .....................................................................58
3.7 tfifo (测试 fifo 模式) 模式 = 110..........................................................................58
3.8 cnfga (configuration 寄存器 一个) 模式 = 111 ................................................58
3.9 cnfgb (configuration 寄存器 b) 模式 = 111.................................................58
3.10 ecr (扩展 控制 寄存器) 模式 = 所有................................................59
3.11 位 编排 的 ecp 端口 寄存器................................................................................60
3.12 ecp 管脚 描述...................................................................................................61
3.13 ecp 运作 ...............................................................................................................62
3.14 先进先出 运作..............................................................................................................62
3.15 dma transfers .............................................................................................................63
3.16 编写程序 i/o (非-dma) 模式 .........................................................................63
4 extension fdd mode (extfdd)...........................................................................................63
5 extension 2fdd模式 (ext2fdd).......................................................................................63
键盘 控制 ......................................................................................64
1 输出 缓存区 .........................................................................................................................64
2 输入 缓存区 .............................................................................................................................64
3 状态 寄存器......................................................................................................................65
4 COMMANDS.................................................................................................................................65
5 硬件 gatea20/键盘 重置 控制 逻辑..............................................67
5.1 kb 控制 register (逻辑 设备 5, cr-f0) ....................................................67
5.2 端口 92 control 寄存器 (default 值 = 0x24) .........................................67
4 onnow / security 键盘 和 mouse wake-向上...................................................68
一般 目的 i/o.............................................................................................69
1 基本 i/o functIONS................................................................................................................71
2 alternate i/o fUNCTIONS.....................................................................................................73
2.1 中断 steERING ....................................................................................................73
2.2 watch dog timer 输出.........................................................................................74
2.3 电源 led.......................................................................................................................74
2.4 一般 purpose 地址 解码器 ....................................................................74
2.5 一般 purpose 写 strobe.............................................................................74

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W83977TF 发行释放日期: march 1998 -III- 修订 0.62 5.3.2 数据和 ecpa先进先出端口 ...........................................................................................56 5.3.3 设备状态寄存器 (dsr) .................................................................................56 5.3.4 设备 control 寄存器 (dcr) .............................................................................57 5.3.5 cfifo (parallel 端口数据先进先出) 模式 = 010......................................................58 5.3.6 ecpdfifo (ecp数据先进先出) 模式 = 011 .....................................................................58 5.3.7 tfifo (测试 fifo 模式) 模式 = 110..........................................................................58 5.3.8 cnfga (configuration 寄存器一个) 模式 = 111 ................................................58 5.3.9 cnfgb (configuration 寄存器 b) 模式 = 111.................................................58 5.3.10 ecr (扩展控制寄存器) 模式 = 所有................................................59 5.3.11 位编排的 ecp 端口寄存器................................................................................60 5.3.12 ecp 管脚描述...................................................................................................61 5.3.13 ecp 运作 ...............................................................................................................62 5.3.14 先进先出运作..............................................................................................................62 5.3.15 dma transfers .............................................................................................................63 5.3.16 编写程序 i/o (非-dma) 模式 .........................................................................63 5.4 extension fdd mode (extfdd)...........................................................................................63 5.5 extension 2fdd模式 (ext2fdd).......................................................................................63 6. 键盘控制 ......................................................................................64 6.1 输出缓存区 .........................................................................................................................64 6.2 输入缓存区 .............................................................................................................................64 6.3 状态寄存器......................................................................................................................65 6.4 COMMANDS.................................................................................................................................65 6.5 硬件 gatea20/键盘重置控制逻辑..............................................67 6.5.1 kb 控制 register (逻辑设备 5, cr-f0) ....................................................67 6.5.2 端口 92 control 寄存器 (default 值 = 0x24) .........................................67 6.4 onnow / security 键盘和 mouse wake-向上...................................................68 7. 一般目的 i/o.............................................................................................69 7.1 基本 i/o functIONS................................................................................................................71 7.2 alternate i/o fUNCTIONS.....................................................................................................73 7.2.1 中断 steERING ....................................................................................................73 7.2.2 watch dog timer 输出.........................................................................................74 7.2.3 电源 led.......................................................................................................................74 7.2.4 一般 purpose 地址解码器 ....................................................................74 7.2.5 一般 purpose 写 strobe.............................................................................74

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