The 82091AA Advanced Integrated Peripheral (AIP) is an integrated I O solution containing a floppy disk
controller 2 serial ports a multi-function parallel port an IDE interface and a game port on a single chip The
integration of these I O devices results in a minimization of form factor cost and power consumption The
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INTEL CORPORATION 1996
December 1995
Order Number 290486-003
82091AA
floppy disk controller is the 82078 core The serial ports are 16550 compatible The parallel port supports all of
the IEEE Standard 1284 protocols (ECP EPP Byte Compatibility and Nibble) The IDE interface supports
8- or 16-bit programmed I O and 16-bit DMA The Host Interface is an 8-bit ISA interface optimized for type
‘‘F’’ DMA and no wait-state I O accesses Improved throughput and performance the 82091AA contains six
16-byte FIFOs – two for each serial port one for the parallel port and one for the floppy disk controller The
82091AA also includes power management and 3 3V capability for power sensitive applications such as
notebooks The 82091AA supports both motherboard and add-in card configurations
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