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PC87382-VBH
LPC-to-LPC Switch for Docking Stations, with Fast Infrared Port, Serial Port and GPIOs
PC87382
LPC-to-LPC
Switch
for
Docking
Stations,
with
Fast
Infrared
Port,
Serial
Port
and
GPIOsDecember 2003
Revision 1.2
PC87382
LPC-to-LPC Switch for Docking Stations, with Fast
Infrared Port, Serial Port and GPIOs
General DescriptionThe PC87382,a memberofthe National SemiconductorLPC
SuperI/O family,is targetedfora wide rangeof portable ap-
plications. The PC87382is PC2001 andACPI compliant, and
featuresan LPC-to-LPC Switch with hot plugability, FastIn-
frared port (FIR, IrDA 1.1 compliant), Serial Port, and Gener-
al-Purpose Input/Output (GPIO) supportfora totalof eight
ports.
The PC87382 enables glueless implementationofan LPC-
to-LPC Switch between the motherboard LPC bus and the
Docking Station, and supports hot insertion and hot removal.
Outstanding Features LPC-to-LPC Switch with hot plugability, enables LPC
devicesin the Docking Stationtobe connectedto the
Main LPC Bus, thus reducing the numberof signalsre-
quired through the Docking Station connector LPC bus interface, based on Intel’s LPC Interface
Specification Revision 1.1, August 2002 (supports
CLKRUN signal) Fast Infrared port PC2001 and ACPI Revision 2.0 compliant Serial IRQ support (15 options) Protection features, including GPIO lock and pin con-
figuration lock Eight GPIO ports, including with “assert IRQ” capability XOR Tree and TRI-STATE device pins (or ICT) test-
ability modes. 5V tolerant and back-drive protected pins (except LPC
bus pins) 48-pin LQFP package
System Block DiagramLPC Bus
South Bridge
TPM Docking
SIO
Portable
Platform
Docking
StationDocking LPC Bus
PC87382I/O
Ports
Embedded
Controller
DCLKOUT
Serial
Interface
Infrared
Interface
