W83977TF-A View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W83977TF-A

WINBOND I/O

Winbond 

W83977TF

TABLE OF CONTENTS

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

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

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

1. PIN DESCRIPTION................................................................................................................ 5

1.1 HOST INTERFACE .....................................................................................................................................5

1.2 GENERAL PURPOSE I/O PORT...............................................................................................................7

1.3 SERIAL PORT INTERFACE......................................................................................................................8

1.4 INFRARED INTERFACE ...........................................................................................................................9

1.5 MULTI-MODE PARALLEL PORT ...........................................................................................................9

1.6 FDC INTERFACE ......................................................................................................................................14

1.7 KBC INTERFACE......................................................................................................................................15

1.8 POWER PINS .............................................................................................................................................16

1.9 ACPI INTERFACE.....................................................................................................................................16

2. FDC FUNCTIONAL DESCRIPTION ................................................................................ 17

2.1 W83977TF FDC .........................................................................................................................................17

2.1.1 AT INTERFACE.............................................................................................................................17

2.1.2 FIFO (DATA) ..................................................................................................................................17

2.1.3 DATA SEPARATOR .....................................................................................................................18

2.1.4 WRITE PRECOMPENSATION ...................................................................................................18

2.1.5 PERPENDICULAR RECORDING MODE .................................................................................18

2.1.6 FDC CORE ......................................................................................................................................19

2.1.7 FDC COMMANDS ........................................................................................................................19

2.2 REGISTER DESCRIPTIONS ...................................................................................................................29

2.2.1 STATUS REGISTER A (SA REGISTER) (READ BASE ADDRESS + 0).............................29

2.2.2 STATUS REGISTER B (SB REGISTER) (READ BASE ADDRESS + 1) .............................31

2.2.3 DIGITAL OUTPUT REGISTER (DO REGISTER) (WRITE BASE ADDRESS + 2)............33

2.2.4 TAPE DRIVE REGISTER (TD REGISTER) (READ BASE ADDRESS + 3) ........................33

2.2.5 MAIN STATUS REGISTER (MS REGISTER) (READ BASE ADDRESS + 4) ....................34

Publication Release Date: March 1998

-I-

Revision 0.62

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