W83977EG-AW datasheet(3/142 Pages) TALEMA

Part #	W83977EG-AW

Description	These products are not designed for use in life support appliances

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Manufacturer	TALEMA [Nuvotem Talema]

Direct Link	http://www.nuvotem.com

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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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