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PC87391 Dataheets PDF



Part Number PC87391
Manufacturers National Semiconductor
Logo National Semiconductor
Description 100-Pin LPC SuperI/O Devices for Portable Applications
Datasheet PC87391 DatasheetPC87391 Datasheet (PDF)

PC87391, PC87392, PC87393, PC87393F 100-Pin LPC SuperI/O Devices for Portable Applications PRELIMINARY September 2000 Revision 1.41 PC87391, PC87392, PC87393, PC87393F 100-Pin LPC SuperI/O Devices for Portable Applications 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 P.

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PC87391, PC87392, PC87393, PC87393F 100-Pin LPC SuperI/O Devices for Portable Applications PRELIMINARY September 2000 Revision 1.41 PC87391, PC87392, PC87393, PC87393F 100-Pin LPC SuperI/O Devices for Portable Applications 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 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 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 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 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 1284 Parallel Port Interrupt Serializer VDD Wake-Up Control WATCHDOG Timer X-Bus Extension Game Port MIDI Port PWUREQ WDO X-Bus Interface Game Device Interface MIDI Interface 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. ©2000 National Semiconductor Corporation www.national.com Features — Input debounce mechanism • LPC System Interface — — — — — Synchronous cycles, up to 33 MHz bus clock 8-bit I/O cycles Up to four 8-bit DMA channels LPCPD and CLKRUN support Implements PCI mobile design guide recommendation (PCI Mobile Design Guide 1.1, Dec. 18, 1998) — Memory and FWH transaction support • Floppy Disk Controller (FDC) — Programmable write protect — FM and MFM mode support — Enhanced mode command for three-mode Floppy Disk Drive (FDD) support — Perpendicular recording drive support for 2.88 MB — Burst and non-burst modes — Full support for IBM Tape Drive register (TDR) implementation of AT and PS/2 drive types — 16-byte data FIFO — Error-free handling of data overrun and underrun — Software compatible with the PC8477, which contains a superset of the FDC functions in the µDP8473, the NEC µPD765A and the N82077 — High-performance, digital separator — Standard 5.25” and 3.5” FDD support — Supports up to four floppy disk drives — Supports fast tape drives (2 Mbps) and standard tape drives (1 Mbps, 500 Kbps and 250 Kbps) — Supports external drive via parallel port pins • • Interrupt Serializer — Four Parallel IRQs to Serial IRQ Musical Instrument Digital Interface (MIDI) Port — Compatible with MPU-401 UART mode — 16-byte Receive and Transmit FIFOs — Loopback mode support • Game Port — Compatible with the Legacy Game Port definition — Full digital implementation — Supports up to two analog joysticks • X-Bus Extension — — — — — — Supports read and write operations 8-bit data bus Up to 28-bit address bus supports up to 256MB data Two chip select pins Interrupt routing via PIRQ pins Supports BIOS flash devices • IEEE 1284 compliant Parallel Port — ECP, including Level 2 (14 mA sink and source output buffers) — Software or hardware control — Enhanced Parallel Port (EPP) compatible with EPP 1.7 and EPP 1.9 — EPP support as mode 4 of the Extended Control Register (ECR) — Selection of internal pull-up or pull-down resistor for Paper End (PE) pin — Supports a demand DMA mode mechanism and a DMA fairness mechanism for improved bus utilization — Protection circuit that prevents damage to the parallel port when a printer connected to it powers up or is operated at high voltages, even if the device is in power-down — Parallel Port Multiplexer (PPM) to supp.


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