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W83977TF-A Datasheet(PDF) 3 Page - Winbond |
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W83977TF-A Datasheet(HTML) 3 Page - Winbond |
3 / 160 page 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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