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PDF UR8HC342 Data sheet ( Hoja de datos )
| Número de pieza | UR8HC342 | |
| Descripción | USAR ACPITrollerTM 342 Robust 8042 Keyboard / ACPI-Embedded Controller | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
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USAR ACPITrollerTM 342 UR8HC342
USAR ACPITrollerTM 342
Robust 8042 Keyboard /
ACPI-Embedded Controller
A Semtech Company
Preliminary
USAR System Management family
product specifications
Description
Features
The USAR ACPITrollerTM 342
UR8HC342 is a single IC that
functions both as an 8042-type
Human Input Device Controller
(HIDC) and an ACPI-compliant
Embedded Controller (EC). The
UR8HC342 provides the typical
functionality of an 8042-type HID
Controller with embedded key and
motion scanning. In addition, the
UR8HC342 functions as an ACPI-
compliant Embedded Controller
(EC) and SMBus host.
The IC achieves unparalleled
minimum power consumption
(typically less than 1µA) due to
USAR's patented Zero-Power™
technologies for both PS/2 ports
and the SMBus port - an industry
first. The USAR ACPITroller™ 342
can power down even when
devices are connected and active.
Based on USAR's patented Zero-
Power™ technology, the
UR8HC342 always operates in the
"STOP" mode, independently of the
configuration and without any data
or event losses.
Using the UR8HC342, system
designers can implement systems
that take advantage of the SMBus,
the Smart Battery System, and the
ACPI specifications, all using a
single IC. The UR8HC342 can be
customized easily through an
extensive library of hardware and
firmware modules in order to
accommodate specialized
configurations at low production
cost.
• Acts as an 8042 HID and ACPI
Embedded Controller
• Typically consumes less than 1µA
• Two external PS/2 ports for external
keyboard and mouse with auto-
detect and hot-plug support
• Patented Zero-Power™ operation of
all PS/2 ports and the SMBus port -
an industry first
• Simultaneous operation of external
and internal input devices
• AlphaMouseTM Pointing Devices
Manager provides Mousewheel
support- a first for an EC
• Acts as a keyboard controller and
encoder for an 8 x 16 keyboard
matrix; supports all three keyboard
scan code sets
• AlphaKeyTM keyboard manager
enables matrix programming
• Support of up to 6 ACPI GPE
interrupt inputs
• 100% compatible with the ACPI
specifications
• SMBus compatible host complies
with version 1.0 of the SBS/SMBus
specifications
• Firmware filters any dangerous
SMBus commands
• Offers Internal Virtual SMBus
Devices (IVSDs) such as GPIO or
10-bit A/D
• Three-volt and five-volt operation
• Customized versions available
Applications
• Handhelds / Notebooks
• Industrial / Vertical systems
• ACPI-compatible systems
• Single Board Computers
Pin Assignments
80
1
IVSD2:0/AN0
SMBC0
SMBD0
PS21CLK
PS22CLK
IMCLK
PS21DAT
PS22DAT
IMDAT
IVSD1:3
IVSD1:2
GPE1/DOCK
GPE0/LID
IOW
IOR
KCS
A2
ECS
SCI
KBRST
20
UR8HC342-FQ
61
60
GPE2
SMBINT
KEYWKUP
COL0
COL1
COL2
COL3
COL4
COL5
COL6
COL7
COL8
COL9
COL10
COL11
COL12
COL13
41
Copyright 2000 USAR Systems, Inc. All rights
reserved.
21 40
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
1
1 page  
USAR ACPITrollerTM 342 UR8HC342
Preliminary
USAR System Management family
product specifications
USAR –– A Semtech Company
Features
The following pages contain brief descriptions of the features provided by USAR’s UR8HC342. For more detailed
information, please refer to the USAR UR8HC342 ACPITrollerTM 342 Technical Reference Manual, document
number DOC8-342-TR-XXX.
ACPI Embedded Controller
Interface
USAR’s UR8HC342 ACPI
embedded controller (EC)
interfaces to the Host’s ISA bus via
two I/O addresses. Three registers
(Status, Command and Data)
occupy the two I/O addresses.
The operating system can
communicate with the EC using the
standard ACPI embedded
controller command set. The host
can either issue a command byte
to the command register directly or
send a data byte to the
data port.
SMBus Host Controller Interface
The SMBus host manages one Zero-PowerTM SMBus port for an SMBus
device, such as a smart battery. USAR’s SMBus controller interfaces the
system via ISA and complies with the latest (v1.0) SBS and SMBus
specifications.
The SMBus Host Controller Interface allows the Host processor, under
control of the operating system, to manage both real and virtual devices on
the SMBus, including those belonging to the Smart Battery System. Such
devices include contrast/backlight controllers and temperature sensors.
The SMBus Host Controller interface allows the OS to directly address
devices on the SMBus. It provides a method of communicating with
SMBus devices through a block of registers that reside in the Embedded
Controller space. In addition, the USAR UR8HC342’s SMBus Host
Controller handles certain SMBus functions related to alerts and error
conditions.
8042 Human Input Device
Controller Interface (HIDC)
The HIDC portion of USAR’s
UR8HC342 interfaces the Host via
two I/O addresses: 0x60 and 0x64.
Three registers occupy the two I/O
locations: Command, Status and
Data. Any byte written by the Host
system to the Command register is
interpreted as a command.
The UR8HC342 supports all the
standard 8042 commands as well
as many expanded commands.
Expanded commands provide
such functionality as the ability to
create password protection and
disable an auxiliary input device.
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
5
5 Page 
USAR ACPITrollerTM 342 UR8HC342
Preliminary
USAR System Management family
product specifications
USAR –– A Semtech Company
This Page Left Intentionally Blank
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet UR8HC342.PDF ] | |
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