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PC87391 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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PC87391 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 148 page  www.national.com General Description National Semiconductor’s PC8739x family of LPC SuperI/O devices is targeted 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 Mul- tiplexer (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 Con- troller (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 WATCH- DOG ™ 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 X-Bus Extension for read and write operations q LPC bus interface, based on Intel’s LPC Interface Spec- ification Rev. 1.01, February 1999 (supports CLKRUN and LPCPD signals) and Intel FWH transactions q PC99 and ACPI compliant q Serial IRQ support (15 options) q Interrupt Serializer (four Parallel IRQs to Serial IRQ) q PPM for external FDD signal support q MIDI interface compatible with MPU-401 UART mode q Game port inputs for up to two joysticks q Protection features, including GPIO lock and pin con- figuration lock q 32 GPIO ports (16 standard, 16 with Assert IRQ/SMI) q 5V tolerant and back-drive protected pins (except LPC bus pins) q 100-pin TQFP Package Block Diagram National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brand or product names are trademarks or registered trademarks of their respective holders. Serial Port 2 IEEE 1284 Parallel Port Floppy Disk Controller Floppy Drive Interface Serial Infrared Interface Interface Bus Interface LPC Interface I/O WATCHDOG Timer WDO Serial Port 1 Serial Interface with FIR GPIO Ports Serial IRQ Parallel Port\ SMI Ports PPM Floppy Drive Interface MIDI Interface MIDI Port Game Port Game Device Interface X-Bus Extension X-Bus Interface VDD Parallel IRQs Interrupt Serializer Wake-Up Control PWUREQ PC87393 / PC87393F ©2000 National Semiconductor Corporation PRELIMINARY September 2000 Revision 1.41 PC87391, PC87392, PC87393, PC87393F 100-Pin LPC SuperI/O Devices for Portable Applications |
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