W83877ATF Datasheet, PDF (3/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

W83877ATF
TABLE OF CONTENTS
GENERAL DESCRIPTION ................................................................................................1
FEATURES ..........................................................................................................................2
1.0 PIN CONFIGURATION ...............................................................................................4
1.0 PIN DESCRIPTION ........................................................................................................................5
1.1 HOST INTERFACE .........................................................................................................................5
1.2 SERIAL PORT INTERFACE ...........................................................................................................7
1.3 MULTI-MODE PARALLEL PORT ..................................................................................................9
1.4 FDC INTERFACE..........................................................................................................................14
2.0 FDC FUNCTIONAL DESCRIPTION........................................................................16
2.1 W83877ATF FDC...........................................................................................................................16
2.2 REGISTER DESCRIPTIONS .........................................................................................................28
3.0 UART PORT................................................................................................................39
3.1 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART A, UART B)..................39
3.2 REGISTER ADDRESS...................................................................................................................40
3.3 INFRARED PORT .........................................................................................................................49
4.0 PARALLEL PORT.....................................................................................................82
4.1 PRINTER INTERFACE LOGIC .....................................................................................................82
4.2 ENHANCED PARALLEL PORT (EPP) .........................................................................................84
4.3 EXTENDED CAPABILITIES PARALLEL (ECP) PORT ...............................................................88
4.4 EXTENSION FDD MODE (EXTFDD)...........................................................................................97
4.5 EXTENSION 2FDD MODE (EXT2FDD).......................................................................................97
5.0 PLUG AND PLAY CONFIGURATION ....................................................................98
6.0 ACPI /LEGACY FEATURE AND AUTO POWER MANAGEMENT .....................98
6.1 ACPI/LEGACY POWER MANAGEMENT ...................................................................................98
6.2 DEVICE(AUTO) POWER MANAGEMENT..................................................................................98
7.0 SERIAL IRQ.................................................................................................................99
Publication Release Date: July 1997
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Version 0.50