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changes to these specifications at any time, without notice. Microcomputer Products may have minor variations to this specification known as errata.
December 1995COPYRIGHT
©
INTEL CORPORATION, 1996 Order Number: 290486-003
82091AA
ADVANCED INTEGRATED PERIPHERAL (AIP)
Y
Single-Chip PC Compatible I/O Solution
for Notebook and Desktop Platforms:
Ð 82078 Floppy Disk Controller Core
Ð Two 16550 Compatible UARTs
Ð One Multi-Function Parallel Port
Ð IDE Interface
Ð Integrated Back Power Protection
Ð Integrated Game Port Chip Select
Ð 5V or 3.3V Supply Operation with 5V
Tolerant Drive Interface
Ð Full Power Management Support
Ð Supports Type F DMA Transfers for
Faster I/O Performance
Ð No Wait-State Host I/O Interface
Ð Programmable Interrupt Interfaces
Ð Single Crystal/Oscillator Clock
(24 MHz)
Ð Software Detectable Device ID
Ð Comprehensive Powerup
Configuration
Y
The 82091AA is 100 Percent
Compatible with EISA, ISA and AT
Y
Host Interface Features
Ð 8-Bit Zero Wait-State ISA Bus
Interface
Ð DMA with Type F Transfers
Ð Five Programmable ISA Interrupt
Lines
Ð Internal Address Decoder
Y
Parallel Port Features
Ð All IEEE Standard 1284 Protocols
Supported (Compatibility, Nibble,
Byte, EPP, and ECP)
Ð Peak Bi-Directional Transfer Rate of
2 MB/sec
Ð Provides Interface for Low-Cost
Engineless Laser Printer
Ð 16-Byte FIFO for ECP
Ð Interface Backpower Protection
Y
Floppy Disk Controller Features
Ð 100 Percent Software Compatible
with Industry Standard 82077SL and
82078
Ð Integrated Analog Data Separator
250K, 300K, 500K, and 1 MBits/sec
Ð Programmable Powerdown
Command
Ð Auto Powerdown and Wakeup
Modes
Ð Integrated Tape Drive Support
Ð Perpendicular Recording Support for
4 MB Drives
Ð Programmable Write Pre-
Compensation Delays
Ð 256 Track Direct Address, Unlimited
Track Support
Ð 16-Byte FIFO
Ð Supports 2 or 4 Drives
Y
16550 Compatible UART Features
Ð Two Independent Serial Ports
Ð Software Compatible with 8250 and
16450 UARTs
Ð 16-Byte FIFO per Serial Port
Ð Two UART Clock Sources, Supports
MIDI Baud Rate
Y
IDE Interface Features
Ð Generates Chip Selects for IDE
Drives
Ð Integrated Buffer Control Logic
Ð Dual IDE Interface Support
Y
Power Management Features
Ð Transparent to Operating Systems
and Applications Programs
Ð Independent Power Control for Each
Integrated Device
Y
100-Pin QFP Package
(See Packaging Spec. 240800)
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
