參數(shù)資料
型號: W83977TF(EOL)
英文描述: W83877TF plus KBC. CIR. RTC
中文描述: W83877TF加比聯(lián)。稅務(wù)局局長。時鐘
文件頁數(shù): 6/161頁
文件大?。?/td> 592K
代理商: W83977TF(EOL)
W83977EF/ CTF
PRELIMINARY
Publication Release Date: March 1999
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IV
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Revision A1
5.3.11 Bit Map of ECP Port Registers........................................................................................... 74
5.3.12 ECP Pin Descriptions....................................................................................................... 75
5.3.13 ECP Operation................................................................................................................. 76
5.3.14 FIFO Operation................................................................................................................. 76
5.3.15 DMA Transfers................................................................................................................. 77
5.3.16 Programmed I/O (NON-DMA) Mode.................................................................................. 77
5.4 EXTENSION FDD MODE (EXTFDD) ........................................................................................ 77
5.5 EXTENSION 2FDD MODE (EXT2FDD) .................................................................................... 77
6.0 KEYBOARD CONTROLLER..............................................................................78
6.1 OUTPUT BUFFER.................................................................................................................... 78
6.2 INPUT BUFFER........................................................................................................................ 78
6.3 STATUS REGISTER................................................................................................................. 79
6.4 COMMANDS.............................................................................................................................. 80
6.5 HARDWARE GATEA20/KEYBOARD RESET CONTROL LOGIC............................................ 81
6.5.1 KB Control Register (Logic Device 5, CR-F0)....................................................................... 82
6.5.2 Port 92 Control Register (Default Value = 0x24)................................................................... 82
6.6 ONNOW / SECURITY KEYBOARD AND MOUSE WAKE-UP.................................................... 83
6.6.1 Keyboard Wake-Up Function ............................................................................................... 83
6.6.2 Keyboard Password Wake-Up Function.............................................................................. 83
6.6.3 Mouse Wake-Up Function.................................................................................................... 83
7.0 GENERAL PURPOSE I/O...................................................................................84
7.1 BASIC I/O FUNCTIONS............................................................................................................. 86
7.2 ALTERNATE I/O FUNCTIONS................................................................................................... 88
7.2.1 Interrupt Steering................................................................................................................. 88
7.2.2 Watch Dog Timer Output ..................................................................................................... 89
7.2.3 Power LED .......................................................................................................................... 89
7.2.4 General Purpose Address Decoder...................................................................................... 89
8.0 PLUG AND PLAY CONFIGURATION................................................................90
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