W83877TD Ver la hoja de datos (PDF) - Winbond

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componentes Descripción

Fabricante

W83877TD

WINBOND I/O

Winbond 

W83877TF/W83877TG

Table of Contents-

1. GENERAL DESCRIPTION .............................................................................................................. 1

2. FEATURES ...................................................................................................................................... 2

3. PIN CONFIGURATION .................................................................................................................... 4

4. PIN DESCRIPTION......................................................................................................................... 5

4.1 Host Interface.......................................................................................................................... 5

4.2 Serial Port Interface ................................................................................................................ 7

4.3 Multi-Mode Parallel Port.......................................................................................................... 8

4.4 FDC Interface........................................................................................................................ 13

5. FDC FUNCTIONAL DESCRIPTION .............................................................................................. 15

5.1 W83877TF/TG FDC .............................................................................................................. 15

5.1.1 AT interface ............................................................................................................................15

5.1.2 FIFO (Data) ............................................................................................................................15

5.1.3 Data Separator .......................................................................................................................16

5.1.4 Write Precompensation ..........................................................................................................16

5.1.5 Perpendicular Recording Mode ..............................................................................................16

5.1.6 Tape Drive..............................................................................................................................17

5.1.7 FDC Core ...............................................................................................................................17

5.1.8 FDC Commands.....................................................................................................................17

5.1.9 FDC Instruction Sets ..............................................................................................................18

5.2 Register Descriptions ............................................................................................................ 26

5.2.1 Status Register A (SA Register) (Read base address + 0).....................................................26

5.2.2 Status Register B (SB Register) (Read base address + 1).....................................................28

5.2.3 Digital Output Register (DO Register) (Write base address + 2) ............................................30

5.2.4 Tape Drive Register (TD Register) (Read base address + 3).................................................30

5.2.5 Main Status Register (MS Register) (Read base address + 4)...............................................31

5.2.6 Data Rate Register (DR Register) (Write base address + 4) ..................................................31

5.2.7 FIFO Register (R/W base address + 5) ..................................................................................33

5.2.8 Digital Input Register (DI Register) (Read base address + 7).................................................34

5.2.9 Configuration Control Register (CC Register) (Write base address + 7) ................................36

6. UART PORT................................................................................................................................... 37

6.1 Universal Asynchronous Receiver/Transmitter (UART A, UART B) .................................... 37

6.2 Register Address................................................................................................................... 37

6.2.1 UART Control Register (UCR) (Read/Write) ..........................................................................38

6.2.2 UART Status Register (USR) (Read/Write) ............................................................................39

6.2.3 Handshake Control Register (HCR) (Read/Write) ..................................................................40

6.2.4 Handshake Status Register (HSR) (Read/Write)....................................................................41

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