PARALLEL PORT....................................................................................................................................................72
IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES
..................................................................73
EXTENDED CAPABILITIES PARALLEL PORT.................................................................................................78
POWER MANAGEMENT........................................................................................................................................88
SERIAL IRQ..............................................................................................................................................................91
TIMING DIAGRAMS FOR SER_IRQ CYCLE ....................................................................................................91
8042 KEYBOARD CONTROLLER DESCRIPTION ...........................................................................................94
L
ATCHES
O
N
K
EYBOARD AND
M
OUSE
IRQ
S
..........................................................................................................100
K
EYBOARD AND
M
OUSE
PME G
ENERATION
..........................................................................................................101
GENERAL PURPOSE I/O .....................................................................................................................................102
GPIO P
INS
.............................................................................................................................................................102
EITHER EDGE TRIGGERED INTERRUPTS
..................................................................................................107
LED FUNCTIONALITY
.......................................................................................................................................107
SYSTEM MANAGEMENT INTERRUPT (SMI) ................................................................................................108
PME SUPPORT.......................................................................................................................................................109
‘WAKE ON SPECIFIC KEY’ OPTION
...............................................................................................................110
FAN SPEED CONTROL AND MONITORING ..................................................................................................111
F
AN
S
PEED
C
ONTROL
...........................................................................................................................................111
F
AN
T
ACHOMETER
I
NPUTS
....................................................................................................................................112
SECURITY FEATURE ..........................................................................................................................................115
GPIO D
EVICE
D
ISABLE
R
EGISTER
C
ONTROL
.......................................................................................................115
D
EVICE
D
ISABLE
R
EGISTER
..................................................................................................................................115
GAME PORT LOGIC ............................................................................................................................................115
P
OWER
C
ONTROL
R
EGISTER
................................................................................................................................117
VREF P
IN
..............................................................................................................................................................117
RUNTIME REGISTERS ........................................................................................................................................117
CONFIGURATION ................................................................................................................................................142
OPERATIONAL DESCRIPTION.........................................................................................................................159
MAXIMUM GUARANTEED RATINGS*............................................................................................................159
DC ELECTRICAL CHARACTERISTICS..........................................................................................................159
TIMING DIAGRAMS
..............................................................................................................................................162
PACKAGE OUTLINE............................................................................................................................................184
APPENDIX - TEST MODE....................................................................................................................................185
B
OARD
T
EST
M
ODE
...............................................................................................................................................185
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