PC87351

PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control PRELIMINARY May 1998 PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control Highlights General Description The PC87351, a member of National Semiconductor’s SuperI/O family of integrated PC peripherals, is a 128-pin, PC98 and ACPI compliant SuperI/O that offers a single-chip solution to the most commonly used ISA peripherals. The PC87351 incorporates: a Floppy Disk Controller (FDC) which is available also on the Parallel Port pins as a multiplexed option (PPM), two enhanced Serial Ports, Infrared Comunication Port (HP-SIR, Sharp-IR, and Consumer Electronics-IR), a full IEEE 1284 Parallel Port, a Keyboard and Mouse Controller (KBC), System Wake-Up Control (SWC), General-Purpose Input/Output (GPIO) Ports with assert interrupt capability, and Fan Speed Control (FSC). Outstanding Features Fan Speed Control for two fans 11 General-Purpose I/O Ports, bi-directional, with interrupt assertion capability System Wake-Up Control powered by VSB, generates power-up request in response to preprogrammed keyboard or mouse sequence, modem, telephone ring, and two general-purpose events without an external clock Serial or parallel IRQ support Programmable write protect for Floppy Disk Controller Power-fail recovery support Block Diagram Parallel Port/ Floppy Drive Interface Serial Interface Serial Infrared Interface Interface Floppy Drive Interface ISA Interface SERIRQ PPM Serial Port 1 Ser...