w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 44

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

GENERAL DESCRIPTION ................................................................................................1
FEATURES ..........................................................................................................................2
PIN CONFIGURATION......................................................................................................5
1.0 PIN DESCRIPTION.....................................................................................................6
1.1 HOST INTERFACE...................................................................................................................................6
1.2 GENERAL PURPOSE I/O PORT...............................................................................................................9
1.3 SERIAL PORT INTERFACE...................................................................................................................10
1.4 INFRARED INTERFACE........................................................................................................................11
1.5 MULTI-MODE PARALLEL PORT .........................................................................................................11
1.6 FDC INTERFACE ...................................................................................................................................16
1.7 KBC INTERFACE...................................................................................................................................17
1.8 POWER PINS ..........................................................................................................................................18
1.9 ACPI INTERFACE..................................................................................................................................18
2.0 FDC FUNCTIONAL DESCRIPTION........................................................................19
2.1 W83977ATF FDC....................................................................................................................................19
2.1.1 AT interface.......................................................................................................................................19
2.1.2 FIFO (Data) ......................................................................................................................................19
2.1.3 Data Separator..................................................................................................................................20
2.1.4 Write Precompensation......................................................................................................................20
2.1.5 Perpendicular Recording Mode .........................................................................................................20
2.1.6 FDC Core..........................................................................................................................................21
2.1.7 FDC Commands ................................................................................................................................21
TABLE OF CONTENTS
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Publication Release Date:April 1998
WINBOND I/O
W83977ATF
Preliminary Revision 0.52