W83877TF Datasheet, PDF (52/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
7.0 SERIAL IRQ.................................................................................................................66
7.1 START FRAME .............................................................................................................................67
7.2 IRQ/DATA FRAME .......................................................................................................................67
7.3 STOP FRAME................................................................................................................................68
7.4 RESET AND INITIALIZATION ....................................................................................................68
8.0 EXTENDED FUNCTION REGISTERS ....................................................................69
8.1 EXTENDED FUNCTIONS ENABLE REGISTERS (EFERS).............................................................69
8.2 EXTENDED FUNCTION INDEX REGISTERS (EFIRS), EXTENDED FUNCTION DATA
REGISTERS (EFDRS) .....................................................................................................................70
8.3 ACPI REGISTERS FEATURES ....................................................................................................... 113
8.4 ACPI REGISTERS (ACPIRS)........................................................................................................... 115
9.0 SPECIFICATIONS....................................................................................................129
9.1 ABSOLUTE MAXIMUM RATINGS............................................................................................ 129
9.2 DC CHARACTERISTICS ............................................................................................................ 129
9.2 DC CHARACTERISTICS, CONTINUED .................................................................................... 130
9.3 AC CHARACTERISTICS ............................................................................................................ 131
10.0 TIMING WAVEFORMS ........................................................................................137
10.1 FDC.............................................................................................................................................. 137
10.2 UART/PARALLEL....................................................................................................................... 138
10.3 PARALLEL PORT ....................................................................................................................... 140
11.0 APPLICATION CIRCUITS....................................................................................146
11.1 PARALLEL PORT EXTENSION FDD ........................................................................................ 146
11.2 PARALLEL PORT EXTENSION 2FDD....................................................................................... 147
11.3 FOUR FDD MODE...................................................................................................................... 147
12.0 ORDERING INFORMATION ...............................................................................148
13.0 HOW TO READ THE TOP MARKING ...............................................................148
14.0 PACKAGE DIMENSIONS .....................................................................................149
Publication Release Date: May 1997
- II -
Preliminary Version 0.60