PC87391 Datasheet, PDF (1/148 Pages) National Semiconductor (TI) – 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 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
PC87393 / PC87393F
Parallel Port\
Floppy Drive Interface
Serial _Serial Infrared
Interface Interface Interface
I/O Floppy Drive
Ports Interface
PPM
LPC Serial
Parallel
Interface IRQ _SMI ^IRQs
Serial Port 1
Serial Port 2
with FIR
GPIO Ports
Floppy Disk IEEE 1284
Controller ^{Parallel Port}
Bus
Interface
Interrupt
Serializer
V_DD
Wake-Up
Control
PWUREQ
WATCHDOG
Timer
X-Bus
Extension
Game Port
WDO
X-Bus Interface Game Device
Interface
MIDI Port
MIDI
Interface
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