W83977F-A Datasheet, PDF (3/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
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
-II