
W83877TF
Publication Release Date: May 1997
Preliminary Version 0.60
- II -
7.0 SERIAL IRQ.................................................................................................................66
7.1
7.2
7.3
7.4
START FRAME.............................................................................................................................67
IRQ/DATA FRAME.......................................................................................................................67
STOP FRAME................................................................................................................................68
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
9.2
9.2
9.3
ABSOLUTE MAXIMUM RATINGS............................................................................................129
DC CHARACTERISTICS ............................................................................................................129
DC CHARACTERISTICS, CONTINUED ....................................................................................130
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