W83877TF Datasheet, PDF (51/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
WINBOND I/O
TABLE OF CONTENTS
GENERAL DESCRIPTION ................................................................................................1
FEATURES ..........................................................................................................................2
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 ..................................................................................................8
1.4 FDC INTERFACE..........................................................................................................................14
2.0 FDC FUNCTIONAL DESCRIPTION........................................................................16
2.1 W83877TF 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
4.0 PARALLEL PORT.....................................................................................................49
4.1 PRINTER INTERFACE LOGIC .....................................................................................................49
4.2 ENHANCED PARALLEL PORT (EPP) .........................................................................................51
4.3 EXTENDED CAPABILITIES PARALLEL (ECP) PORT ...............................................................55
4.4 EXTENSION FDD MODE (EXTFDD)...........................................................................................64
4.5 EXTENSION 2FDD MODE (EXT2FDD).......................................................................................64
5.0 PLUG AND PLAY CONFIGURATION ....................................................................65
6.0 ACPI /LEGACY FEATURE AND AUTO POWER MANAGEMENT .....................65
6.1 ACPI/LEGACY POWER MANAGEMENT ...................................................................................65
6.2 AUTO(DEVICE) POWER MANAGEMENT..................................................................................65
Publication Release Date: May 1997
-I-
Preliminary Version 0.60