w83977tf Winbond Electronics Corp America, w83977tf Datasheet - Page 3

• Manufacturer Part Number: w83977tf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

GENERAL DESCRIPTION ....................................................................................................... 1
FEATURES.................................................................................................................................... 2
PIN CONFIGURATION ............................................................................................................. 4
1. PIN DESCRIPTION................................................................................................................ 5
2. FDC FUNCTIONAL DESCRIPTION ................................................................................ 17
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.1
2.2
HOST INTERFACE .....................................................................................................................................5
GENERAL PURPOSE I/O PORT...............................................................................................................7
SERIAL PORT INTERFACE......................................................................................................................8
INFRARED INTERFACE ...........................................................................................................................9
MULTI-MODE PARALLEL PORT ...........................................................................................................9
FDC INTERFACE ......................................................................................................................................14
KBC INTERFACE......................................................................................................................................15
POWER PINS .............................................................................................................................................16
ACPI INTERFACE.....................................................................................................................................16
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
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
TABLE OF CONTENTS
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Publication Release Date: March 1998
W83977TF
Revision 0.62