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W83977TF-A Datasheet(PDF) 3 Page - Winbond

Part # W83977TF-A
Description  WINBOND I/O
Download  160 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83977TF-A Datasheet(HTML) 3 Page - Winbond

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W83977TF
Publication Release Date: March 1998
- I -
Revision 0.62
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


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