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Teilenummer | W83977CTF |
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Beschreibung | WINBOND I/O | |
Hersteller | Winbond | |
Logo | ||
Gesamt 70 Seiten www.DataSheet4U.com
W83977EF/CTF
WINBOND I/O
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
www.DataSheet4U.com
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 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.com• Maximum 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
12 Page | ||
Seiten | Gesamt 70 Seiten | |
PDF Download | [ W83977CTF Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
W83977CTF | WINBOND I/O | Winbond |
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