The PC87417-IBU/VLA is a highly integrated Super I/O controller manufactured by National Semiconductor, now part of Texas Instruments (TI). Super I/O controllers provide essential interface functionalities in computer systems, handling low-bandwidth devices such as serial ports, parallel ports, floppy disk drives, and keyboard/mouse interfaces. This controller is typically found in embedded systems and older PC architectures.

Applications

• Embedded systems
• Industrial PCs
• Legacy PC systems
• Single-board computers
• Point-of-sale (POS) systems

Features

• Floppy Disk Controller (FDC)
• Parallel Port (LPT)
• Serial Ports (UARTs)
• Keyboard and Mouse Interface
• Infrared (IrDA) Interface

Benefits

• Provides essential I/O functions in legacy and embedded systems
• Integrates multiple peripherals into a single chip
• Reduces system complexity and cost
• Offers flexible configuration options

Additional Details

The PC87417-IBU/VLA integrates a variety of peripheral functions into a single chip, including a floppy disk controller, a parallel port, serial ports (UARTs), keyboard/mouse interface, and often an infrared (IrDA) interface. The floppy disk controller supports standard floppy disk formats and data transfer rates. The parallel port can be configured for various modes of operation, including standard parallel port (SPP), bidirectional parallel port (BPP), and enhanced parallel port (EPP). The serial ports provide asynchronous communication capabilities. The keyboard and mouse interface supports standard PC keyboard and mouse protocols. The IrDA interface enables wireless communication using infrared signals. The PC87417-IBU/VLA also features programmable interrupt control and DMA channels for efficient data transfer.