PC87392VJG

National Semiconductor's PC8739x family of LPC SuperI/O devices is targetted for a wide range of portable applications. PC99 and ACPI compliant, 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 SuperI/O devices, the PC8739x offers a single-chip solution to the most commonly 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, IrDA 1.1 compliant), 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 features for other PC8739x devices may differ. See the table at the end of the feature listing for device-specific features.

• 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 compliant
• Serial IRQ support (15 options)
• Interrupt Serializer (four Parallel IRQs to Serial IRQ)
• PPM for external FDD signal support
• MIDI interface compatible 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