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W83977EF Datasheet(PDF) 3 Page - Winbond |
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W83977EF Datasheet(HTML) 3 Page - Winbond |
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3 / 142 page  W83977EF-AW/W83977EG-AW -II- Tables of Contents- 1. GENERAL DESCRIPTION ......................................................................................................... 5 2. FEATURES ................................................................................................................................. 6 3. PIN CONFIGURATION............................................................................................................... 8 4. PIN DESCRIPTION.................................................................................................................... 9 4.1 Host Interface ................................................................................................................. 9 4.2 General Purpose I/O Port ............................................................................................. 11 4.3 Serial Port Interface ...................................................................................................... 11 4.4 Infrared Interface .......................................................................................................... 12 4.5 Multi-Mode Parallel Port ............................................................................................... 13 4.6 FDC Interface ............................................................................................................... 17 4.7 KBC Interface................................................................................................................ 18 4.8 POWER PINS ............................................................................................................... 18 4.9 ACPI Interface............................................................................................................... 18 5. FDC FUNCTIONAL DESCRIPTION ......................................................................................... 19 5.1 W83977EF/EG FDC ..................................................................................................... 19 5.1.1 AT interface ..................................................................................................................19 5.1.2 FIFO (Data) ..................................................................................................................19 5.1.3 Data Separator .............................................................................................................20 5.1.4 Write Precompensation ................................................................................................20 5.1.5 Perpendicular Recording Mode ....................................................................................20 5.1.6 FDC Core .....................................................................................................................21 5.1.7 FDC Commands...........................................................................................................21 5.2 Register Descriptions.................................................................................................... 32 5.2.1 Status Register A (SA Register) (Read base address + 0)...........................................32 5.2.2 Status Register B (SB Register) (Read base address + 1)...........................................34 5.2.3 Digital Output Register (DO Register) (Write base address + 2) ..................................36 5.2.4 Tape Drive Register (TD Register) (Read base address + 3).......................................36 5.2.5 Main Status Register (MS Register) (Read base address + 4).....................................37 5.2.6 Data Rate Register (DR Register) (Write base address + 4) ........................................37 5.2.7 FIFO Register (R/W base address + 5) ........................................................................39 5.2.8 Digital Input Register (DI Register) (Read base address + 7).......................................41 5.2.9 Configuration Control Register (CC Register) (Write base address + 7) ......................42 6. UART PORT ............................................................................................................................. 44 6.1 Universal Asynchronous Receiver/Transmitter (UART A, UART B) ............................ 44 6.2 Register Address .......................................................................................................... 44 6.2.1 UART Control Register (UCR) (Read/Write) ................................................................44 6.2.2 UART Status Register (USR) (Read/Write) ..................................................................47 6.2.3 Handshake Control Register (HCR) (Read/Write) ........................................................48 6.2.4 Handshake Status Register (HSR) (Read/Write)..........................................................48 6.2.5 UART FIFO Control Register (UFR) (Write only)..........................................................49 |
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