The Intel D82288-6 is a bus controller designed for use with Intel's 80286 microprocessor. It plays a crucial role in managing the system bus, enabling communication between the CPU, memory, and peripheral devices. The "-6" likely indicates a specific speed grade or revision of the chip.

Applications

• IBM PC AT compatibles: Specifically designed for systems based on the Intel 80286 processor, like the IBM PC AT and its clones.
• Industrial control systems: Some industrial control systems adopted the 80286 architecture, utilizing the D82288 bus controller.
• Early server systems: Used in early server systems that employed the Intel 80286 processor.

Features

• Bus arbitration: Manages bus access requests from different devices, preventing conflicts.
• Address decoding: Decodes memory addresses to determine which device should respond to a memory access.
• Data buffering: Provides buffering for data being transferred on the bus, improving performance.
• Control signal generation: Generates control signals necessary for bus operation, such as read/write strobes.
• Address latching: Latches address signals to maintain valid addresses during bus cycles.

Benefits

• System stability: Ensures stable and reliable bus operation by managing bus access and preventing conflicts.
• Improved performance: Optimizes bus performance through data buffering and efficient bus arbitration.
• Simplified system design: Reduces the complexity of system design by providing integrated bus control functions.
• Compatibility: Designed specifically for use with the Intel 80286 processor, ensuring compatibility.

Additional Details

The D82288-6 operates with the 80286's clock frequency, which could range from 6 MHz to 12.5 MHz or higher, depending on the specific system configuration. The D82288 typically comes in a DIP (Dual In-line Package) for easy integration on a printed circuit board. The datasheet provides detailed timing diagrams and electrical characteristics critical for proper system design. It requires a 5V power supply for operation.