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W83977AF-A Datasheet(PDF) 3 Page - Winbond |
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W83977AF-A Datasheet(HTML) 3 Page - Winbond |
3 / 182 page W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A -II Table of Contents- 1. GENERAL DESCRIPTION ................................................................................................................ 1 2. FEATURES ........................................................................................................................................ 2 3. PIN CONFIGURATION...................................................................................................................... 5 4. PIN DESCRIPTION ........................................................................................................................... 6 4.1 Host Interface.......................................................................................................................... 6 4.2 Advanced Power Management............................................................................................... 8 4.3 Serial Port Interface ................................................................................................................ 9 4.4 Infrared Interface................................................................................................................... 10 4.5 Multi-Mode Parallel Port........................................................................................................ 11 4.6 FDC Interface........................................................................................................................ 15 4.7 KBC Interface........................................................................................................................ 16 4.8 RTC Interface........................................................................................................................ 16 4.9 POWER PINS ....................................................................................................................... 16 5. FDC FUNCTIONAL DESCRIPTION................................................................................................ 17 5.1 W83977F/G and W83977AF/AG FDC.................................................................................. 17 5.1.1 AT interface ............................................................................................................................17 5.1.2 FIFO (Data) ............................................................................................................................17 5.1.3 Data Separator .......................................................................................................................18 5.1.4 Write Precompensation ..........................................................................................................18 5.1.5 Perpendicular Recording Mode ..............................................................................................18 5.1.6 FDC Core ...............................................................................................................................19 5.1.7 FDC Commands.....................................................................................................................19 5.2 Register Descriptions............................................................................................................ 27 5.2.1 Status Register A (SA Register) (Read base address + 0).....................................................28 5.2.2 Status Register B (SB Register) (Read base address + 1).....................................................30 5.2.3 Digital Output Register (DO Register) (Write base address + 2) ............................................31 5.2.4 Tape Drive Register (TD Register) (Read base address + 3).................................................31 5.2.5 Main Status Register (MS Register) (Read base address + 4)...............................................33 5.2.6 Data Rate Register (DR Register) (Write base address + 4) ..................................................33 5.2.7 FIFO Register (R/W base address + 5) ..................................................................................34 5.2.8 Digital Input Register (DI Register) (Read base address + 7).................................................36 5.2.9 Configuration Control Register (CC Register) (Write base address + 7) ................................38 6. UART PORT .................................................................................................................................... 39 6.1 Universal Asynchronous Receiver/Transmitter (UART A, UART B) .................................... 39 6.2 Register Address................................................................................................................... 39 6.2.1 UART Control Register (UCR) (Read/Write) ..........................................................................39 6.2.2 UART Status Register (USR) (Read/Write) ............................................................................41 6.2.3 Handshake Control Register (HCR) (Read/Write) ..................................................................42 6.2.4 Handshake Status Register (HSR) (Read/Write)....................................................................43 6.2.5 UART FIFO Control Register (UFR) (Write only)....................................................................44 |
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