PC87382 Datasheet, PDF (1/72 Pages) National Semiconductor (TI) – LPC-to-LPC Switch for Docking Stations, with Fast Infrared Port, Serial Port and GPIOs

December 2003
Revision 1.2
PC87382
LPC-to-LPC Switch for Docking Stations, with Fast
Infrared Port, Serial Port and GPIOs
General Description
The PC87382, a member of the National Semiconductor LPC
SuperI/O family, is targeted for a wide range of portable ap-
plications. The PC87382 is PC2001 and ACPI compliant, and
features an LPC-to-LPC Switch with hot plugability, Fast In-
frared port (FIR, IrDA 1.1 compliant), Serial Port, and Gener-
al-Purpose Input/Output (GPIO) support for a total of eight
ports.
The PC87382 enables glueless implementation of an LPC-
to-LPC Switch between the motherboard LPC bus and the
Docking Station, and supports hot insertion and hot removal.
Outstanding Features
q _{LPC-to-LPC Switch with hot plugability, enables LPC}
devices in the Docking Station to be connected to the
Main LPC Bus, thus reducing the number of signals re-
quired through the Docking Station connector
q _{LPC bus interface, based on Intel’s LPC Interface}
Specification Revision 1.1, August 2002 (supports
CLKRUN signal)
q _{Fast Infrared port}
q _{PC2001 and ACPI Revision 2.0 compliant}
q _{Serial IRQ support (15 options)}
q _{Protection features, including GPIO lock and pin con-}
figuration lock
q _{Eight GPIO ports, including with “assert IRQ” capability}
q _{XOR Tree and TRI-STATE} _{device pins (or ICT) test-}
ability modes.
q _{5V tolerant and back-drive protected pins (except LPC}
bus pins)
q _{48-pin LQFP package}
System Block Diagram
LPC Bus
South Bridge
TPM
Embedded
Controller
I/O
Ports
Portable
Platform
Docking
Station
PC87382
Serial Infrared
Interface Interface
Docking LPC Bus
DCLKOUT
Docking
SIO
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