S82091AA

Product Details

__

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 floppy disk controller is the 82078 core. The serial ports are 16550 compatible.

**■ Single-Chip PC Compatible I/O Solution for Notebook and Desktop

Platforms:**

— 82078 Floppy Disk Controller Core
— Two 16550 Compatible UARTs
— One Multi-Function Parallel Port
— IDE Interface
— Integrated Back Power Protection
— Integrated Game Port Chip Select
— 5V or 3.3V Supply Operation with 5V Tolerant Drive Interface
— Full Power Management Support
— Supports Type F DMA Transfers for Faster I/O Performance
— No Wait-State Host I/O Interface
— Programmable Interrupt Interfaces
— Single Crystal/Oscillator Clock (24 MHz)
— Software Detectable Device ID
— Comprehensive Powerup Configuration
■ The 82091AA is 100 Percent Compatible with EISA, ISA and AT
■ Host Interface Features
— 8-Bit Zero Wait-State ISA Bus Interface
— DMA with Type F Transfers
— Five Programmable ISA Interrupt Lines
— Internal Address Decoder
■ Parallel Port Features
— All IEEE Standard 1284 Protocols Supported (Compatibility, Nibble, Byte, EPP, and ECP)
— Peak Bi-Directional Transfer Rate of 2 MB/sec
— Provides Interface for Low-Cost Engineless Laser Printer
— 16-Byte FIFO for ECP
— Interface Backpower Protection
■ Floppy Disk Controller Features
— 100 Percent Software Compatible with Industry Standard 82077SL and 82078
— Integrated Analog Data Separator 250K, 300K, 500K, and 1 MBits/sec
— Programmable Powerdown Command
— Auto Powerdown and Wakeup Modes
— Integrated Tape Drive Support
— Perpendicular Recording Support for 4 MB Drives
— Programmable Write PreCompensation Delays
— 256 Track Direct Address, Unlimited Track Support
— 16-Byte FIFO
— Supports 2 or 4 Drives
■ 16550 Compatible UART Features
— Two Independent Serial Ports
— Software Compatible with 8250 and 16450 UARTs
— 16-Byte FIFO per Serial Port
— Two UART Clock Sources, Supports MIDI Baud Rate
■ IDE Interface Features
— Generates Chip Selects for IDE Drives
— Integrated Buffer Control Logic
— Dual IDE Interface Support
■ Power Management Features
— Transparent to Operating Systems and Applications Programs
— Independent Power Control for Each Integrated Device
■ 100-Pin QFP Package (See Packaging Spec. 240800)