This document describes the features and characteristics of the FDC37B77x Enhanced Super I/O Controller, including 5V operation, PC98/99 and ACPI 1.0 compliance, ISA Plug-and-Play compatibility, intelligent auto power management, programmable wake-up event interface, system management interrupt, watchdog timer, 2.88MB Super I/O floppy disk controller, enhanced digital data separator, keyboard controller, etc.
The FDC37B77x is an enhanced Super I/O controller that integrates a floppy disk controller, two UARTs, a keyboard/mouse interface, an infrared port, and a multi‑mode parallel port with ChiProtect circuitry. It supports ISA Plug‑and‑Play, ACPI 1.0, and offers sophisticated power‑management features including programmable wake‑up events.
The document includes a full pin‑out table, detailed descriptions of each pin function, electrical characteristics, timing diagrams, and an errata sheet. It is intended for hardware designers and system integrators who need to implement the chip in PC/AT‑compatible platforms.
| Operating Voltage | 5 V |
|---|---|
| Compatibility | PC98/99 and ACPI 1.0 |
| ISA Plug‑and‑Play | Supported |
| Power Management | Intelligent Auto Power Management |
| Floppy Disk Controller | 2.88 MB Super I/O |
| IRQ Options | Up to 15 IRQs |
| DMA Channels | Three DMA options |
| UART Speed | Supports 230 k and 460 k Baud |
| Infrared Compliance | IrDA 1.0 |
| IBM Compatibility | 100 % compatible |
The controller operates at 5 V.
It provides up to 15 IRQ options.
Yes, it is ISA Plug‑and‑Play compatible.
It complies with IrDA 1.0 and supports consumer IR.