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W83977CTF Schematic ( PDF Datasheet ) - Winbond

Teilenummer W83977CTF
Beschreibung WINBOND I/O
Hersteller Winbond
Logo Winbond Logo 




Gesamt 70 Seiten
W83977CTF Datasheet, Funktion
www.DataSheet4U.com
W83977EF/CTF
WINBOND I/O






W83977CTF Datasheet, Funktion
W83977EF/ CTF
PRELIMINARY
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
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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
-IV -
Publication Release Date: March 1999
Revision A1

6 Page









W83977CTF pdf, datenblatt
W83977EF/ CTF
PRELIMINARY
Internal diagnostic capabilities:
--- Loop-back controls for communications link fault isolation
--- Break, parity, overrun, framing error simulation
Programmable baud generator allows division of 1.8461 Mhz and 24 Mhz by 1 to (216-1)
www.DataSheet4U.comMaximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps for 24 Mhz
Infrared
Supports IrDA version 1.0 SIR protocol with maximum baud rate up to 115.2K bps
Supports SHARP ASK-IR protocol with maximum baud rate up to 57,600 bps
Supports Consumer Infrared (CIR) port. (for W83977CTF only)
Parallel Port
Compatible with IBM parallel port
Supports PS/2 compatible bi-directional parallel port
Supports Enhanced Parallel Port (EPP) Compatible with IEEE 1284 specification
Supports Extended Capabilities Port (ECP) Compatible with IEEE 1284 specification
Extension FDD mode supports disk drive B; and Extension 2FDD mode supports disk drives A and
B through parallel port
Enhanced printer port back-drive current protection
Keyboard Controller
8042 based with optional F/W from AMIKKEYTM-2, Phoenix MultiKey/42TM or customer code
With 2K bytes of programmable ROM, and 256 bytes of RAM
Asynchronous Access to Two Data Registers and One status Register
Software compatibility with the 8042 and PC87911 microcontrollers
Supports PS/2 mouse
Supports port 92
Supports both interrupt and polling modes
Fast Gate A20 and Hardware Keyboard Reset
8 Bit Timer/ Counter
Supports binary and BCD arithmetic
6MHz, 8 MHz, 12 MHz, or 16 MHz operating frequency
Publication Release Date: March 1999
-3 - Revision A1

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SeitenGesamt 70 Seiten
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