PC87392 Datasheet | National Semiconductor

Description National Semiconductor’s PC8739x family of LPC Super I/O devices is targeted for a wide range of portable applications. PC99 and ACPI pliant, the PC8739x family features an X-Bus Extension for read and write operations over the X-Bus, a full IEEE 1284 Parallel Port with a Parallel Port Multiplexer (PPM) for external Floppy Disk Drive (FDD) support, a Musical Instrument Digital Interface (MIDI) port, and a Game port. Like all National LPC Super I/O devices, the PC8739x offers a single-chip solution to the most monly used PC I/O peripherals. The PC8739x family also incorporates: a Floppy Disk Controller (FDC), two enhanced Serial Ports (UARTs), one with Fast Infrared (FIR, Ir DA 1.1 pliant), General-Purpose Input/Output (GPIO) support for a total of 32 ports, Interrupt Serializer for Parallel IRQs and an enhanced WATCHDOG™ timer. The following features apply to the PC87393F. The feature lists for other PC8739x devices may differ. See the table on page 3 for a list of features for each device. Outstanding Features q q X-Bus Extension for read and write operations LPC bus interface, based on Intel’s LPC Interface Specification Rev. 1.01, February 1999 (supports CLKRUN and LPCPD signals) and Intel FWH transactions PC99 and ACPI pliant Serial IRQ support (15 options) Interrupt Serializer (four Parallel IRQs to Serial IRQ) PPM for external FDD signal support MIDI interface patible with MPU-401 UART mode Game port inputs for up to two joysticks Protection features , including GPIO lock and pin configuration lock 32 GPIO ports (16 standard, 16 with Assert IRQ/SMI) 5V tolerant and back-drive protected pins (except LPC bus pins) 100-pin TQFP Package q q q q q q q q q q Block Diagram Parallel Port Floppy Drive Interface Floppy Drive Interface Floppy Disk Controller PPM LPC Serial Interface IRQ SMI Bus Interface Parallel IRQs PC87393 / PC87393F Serial Interface Serial Infrared Interface Interface Serial Port 2 with FIR I/O Ports Serial Port 1 GPIO Ports IEEE...