
SMSC DS – FDC37N958FR
Rev. 09/01/99
IR IRQS................................................................................................................................................ 101
PARALLEL PORT............................................................................................................................... 102
PARALLEL PORT INTERFACE MULTIPLEXOR............................................................................... 124
HOST (LEGACY) PARALLEL PORT INTERFACE (FDC37N958FR STANDARD)............................ 125
PARALLEL PORT FDC INTERFACE ................................................................................................. 125
PARALLEL PORT - 8051 CONTROL (FDC37N958FR STANDARD) ................................................ 126
8051 EMBEDDED CONTROLLER...................................................................................................... 127
FEATURES.......................................................................................................................................... 127
8051 FUNCTIONAL OVERVIEW......................................................................................................... 127
8051 MEMORY MAP........................................................................................................................... 131
8051 CONTROL REGISTERS............................................................................................................. 136
WATCH DOG TIMER........................................................................................................................... 151
SHARED FLASH INTERFACE............................................................................................................ 153
8051 SYSTEM POWER MANAGEMENT............................................................................................ 158
KEYBOARD CONTROLLER............................................................................................................... 168
MAILBOX REGISTER INTERFACE.................................................................................................... 181
PS/2 INTERFACE DESCRIPTION....................................................................................................... 184
ACCESS.BUS INTERFACE DESCRIPTION....................................................................................... 185
LED CONTROLS................................................................................................................................. 189
PULSE WIDTH MODULATORS.......................................................................................................... 190
REAL TIME CLOCK CMOS ACCESS................................................................................................. 190
8051 CONTROLLED PARALLEL PORT ............................................................................................ 193
8051 CONTROLLED IR PORT............................................................................................................ 196