USAR ACPITroller

342 UR8HC342

USAR ACPITroller

342

Robust 8042 Keyboard /
ACPI-Embedded Controller

Preliminary
USAR System Management family
product specifications

Description

Features

Applications

· Handhelds / Notebooks
· Industrial / Vertical systems

· ACPI-compatible systems
· Single Board Computers

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

Pin Assignments

The USAR ACPITroller

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-PowerTM
technologies for both PS/2 ports
and the SMBus port - an industry
first. The USAR ACPITrollerTM 342
can power down even when
devices are connected and active.
Based on USAR's patented Zero-
PowerTM 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.

· AlphaKey

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

· 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-PowerTM operation of

all PS/2 ports and the SMBus port -
an industry first

· Simultaneous operation of external

and internal input devices

· AlphaMouse

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

IVSD2:0/AN0

SMBC0
SMBD0

PS21CLK
PS22CLK

IMCLK

PS21DAT
PS22DAT

IMDAT

IVSD1:3
IVSD1:2

GPE1/DOCK

GPE0/LID

IOW

IOR

KCS

ECS

SCI

KBRST

A20GA

IRQ12

IRQ1

CNVSS

RESET

SYSSUS

SWI

XIN

XOUT

VSS

SCRLK/IVSD0:3

NUMLK/IVSD0:2

CAPSLK/IVSD0:1

AKANA/IVSD0:0

COL15

COL14

GPE6/IVSD1:1/PBO

GPE5/IVSD1:0/PB

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

VCC

VREF

VSS

W
7

W
6

W
5

W
4

SMBEN

IVSD2:1/AN1

GPE2

SMBINT
KEYWKUP
COL0
COL1
COL2
COL3
COL4
COL5
COL6
COL7
COL8
COL9
COL10
COL11
COL12
COL13

UR8HC342-FQ

A Semtech Company

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

Descri

USAR ACPITroller

342 Block Diagram

Embedded Controller

EC Data Register

EC Control/Status

ACPI

Registers

SMBus

Host

3 x PS/2

Ports

8 x 16

Matrix

Keyboard Controller

KBC Data Register

KBC Control/StatusB

8042

KBC

Registers

SCI

SMBINT

D0-D7

IRQ1

IRQ12

KBINIT

A20Gate

ACPIS

8042S

IOW, IOR, A2

SWI

SMBEN

10 bit A/D

D/A, PWM

Brightness/
Contrast

A/D

IVSD

GPIO

4 bit port
expander

Ivsd0

Ivsd2

Ivsd1

GPE

Ivsd3

SMBus

GPEx

PWBUTTON

PWBOVERRIDE

Package options
80-pin, Plastic LQFP
Other materials
Technical Reference Manual

Pitch in mm's
0.5
Type
Document

TA = 0°C to +75°C
UR8HC342-XX-FQ
Part number
DOC8-342-TR-XXX

Ordering Code

XX = Optional for customization
XXX = Denotes revision number

Pin Definitions

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

Pin Numbers
Mnemonic

LQFP

Name and Function

Power Supply
AVSS

Analog Signal Ground

CNVSS

Should be tied to ground

VCC

Vcc 3-5 Volts

VREF

Analog circuitry reference voltage

VSS

Ground

Oscillator pins
XIN

Oscillator input (8 MHz operating freq)

XOUT

Oscillator output

Reset
_RESET

Controller hardware reset pin

System bus
interface pins

_8042S

8042 keyboard controller port select
signal input

_ACPIS

ACPI embedded controller port
select signal output

_IOR

X-bus/ISA address I/O signal input

_IOW

X-bus/ISA address I/O write signal input

_IRQ1

Keyboard interrupt output

_IRQ12

Mouse interrupt output

_KBINIT

Keyboard initialize output

X-bus / ISA address 2 input

A20GATE

A20 Gate output signal

DQ0-DQ7

70-63

X-bus/ ISA parallel data I/O ports

ACPI & SMBus Signals
SCI

System control interrupt output

_SMBINT

SMBus interrupt

_SWI

System wake-up event interrupt
output

_SYSSUS

System suspend input

IVSD00/SCROLL_LOCK

This pin can be programmed to act as a
keyboard LED or as a GPIO pin of internal
virtual SMBus device 0 (IVSDO)(4-bit port
expander)

IVSD01/NUM_LOCK

This pin can be programmed to act as a
keyboard LED or as a GPIO pin of internal
virtual SMBus device 0 (IVSDO)(4-bit port
expander)

IVSD02/CAP_LOCK

This pin can be programmed to act as a
keyboard LED or as a GPIO pin of internal
virtual SMBus device 0 (IVSDO)(4-bit port
expander)

IVSD03/KATAKANALED

This pin can be programmed to act as a
keyboard LED or as a GPIO pin of internal
virtual SMBus device 0 (IVSDO)(4-bit port
expander)

IVSD10/PWM1

IVSD1 bit 0 or PWM output

IVSD11/PWM2

IVSD1 bit 1 or PWM output

IVSD12/DA1/PWM1

This pin can be configured as GPIO, as D/A
output, or PWM output

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

Descri

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

Pin Definitions

Pin Numbers
Mnemonic

LQFP

Name and Function

ACPI & SMBus Signals (con't)
IVSD13/DA2/PWM2

This pin can be configured as GPIO, as D/A
output, or PWM output

IVSD20

This pin can be configured as a 10-bit A/D
input or logic I/O

IVSD20

This pin can be configured as a 10-bit A/D
input or logic I/O

IVSD13/DA2/PWM2

This pin can be configured as GPIO, as D/A
output, or PWM output

IVSD20

This pin can be configured as a 10-bit A/D
input or logic I/O

IVSD21/AN1

This pin can be configured as a 10-bit A/D
input or logic I/O.

IVSD22/AN2

IVSD2 bit or A/D input

IVSD30/GPE0/LID

IVSD3 bit 0 or ACPI general purpose event
(GPE); capable of detecting both negative
and positive signal transitions; typically
serves the LID ACPI function

IVSD31/GPE1/DOCK

IVSD3 bit 1 or ACPI GPE; capable of
detecting both negative and positive signal
transitions; typically serves the DOCK ACPI
function

IVSD32/GPE2/_PWBUTTON

IVSD3 bit 2 or ACPI GPE; typically an ACPI
""Power Button"" input.

IVSD33/GPE3/

IVSD3 bit 3 or ACPI GPE; typically an ACPI

/_PWBOVERRIDE

""Power Button Override"" input

IVSD34/GPE4

IVSD3 bit 4 or ACPI GPE 4

IVSD35/GPE5

IVSD3 bit 5 or ACPI GPE 5

SCL0

This pin acts as the clock line for the SMBus

SDA0

This pin acts as the data line for the SMBus

SMBEN

This output pin allows the SMBus latch to
notify the ACPITrollerTM Basic when SMBus
activity has been detected. It is used to
wake the ACPITrollerTM Basic from sleep
mode, and to disable all PS/2 inputs while
SMBus processing is taking place.

Scanned Matrix Pins
COL0-COL15

54-39

Column matrix outputs

KEYWKUP

Key wake-up output

ROW0-ROW7

38-74

Row matrix inputs

PS/2 Ports
IMCLK

PS/2 clock line for internal mouse

IMDAT

PS/2 data line for internal mouse

PS20CLK

Clock line for external PS/2 port 0; both
external PS/2 ports support hot-plug ins and
auto-select for keyboard or mouse

PS20DAT

Data line for external PS/2 port 0

PS21CLK

Clock line for external PS/2 port 1

PS21DAT

Data line for external PS/2 port 1

Note 1: An underscore in front of the pin
mnemonic denotes an active low signal.

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

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 ACPITroller

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.

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.

SMBus Host Controller Interface

The SMBus host manages one Zero-Power

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.

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

Internal Virtual SMBus Devices

Modeled on SMBus devices, Internal Virtual SMBus Devices (IVSDs) are
general-purpose devices that can be used for system tasks. The Host can
address these devices through the ACPI EC interface in the same way it
would address any external device residing on a SMBus port.

The IVSDs are implemented on shared pins of the UR8HC342. Specific
pins can be used in other keyboard or embedded controller functions and
the ISVDs need to be enabled through the configuration registers residing
either in the EC or in the HID controller area. Once the devices are
enabled, they can be accessed by the Host through standard interfaces
defined in the relevant industry specification.

IVSDs can include port expanders, flat panel digital controls, 10 bit A/D or
GPIO port.

AlphaMouse

Pointing Devices Manager

The USAR AlphaMouseTM pointing devices manager can simultaneously
support up to three mice (including those with MouseWheel) connected to
both the external and internal PS/2 ports of the USAR ACPITrollerTM 342.
Different types of standard mice (two-button, three-button, MouseWheel)
can be connected simultaneously, as the AlphaMouse

pointing device

manager multiplexes the input. The manager supports hot plugging and
hot swapping of standard two-button and three-button mice without a
special driver, and of MouseWheel-enabled mice with a standard
MouseWheel-capable driver.

The USAR AlphaMouseTM pointing devices manager receives its pointing
device input through one or more of the USAR ACPITrollerTM 342 PS/2
ports. The PS/2 Ports Driver will auto-detect the type of device connected
to each PS/2 port. If the device reports itself as a pointing device, it will
connect it to the USAR AlphaMouseTM pointing devices manager for proper
initialization and further data and command handling. The USAR
AlphaMouseTM pointing device manager communicates with the host
system through the mouse port of the HID controller.

AlphaMouse

Features

· Handles both internal and external mouse command communications
· Hot-plug and hot swapping support for external mice
· Transparent MouseWheel support for external mouse
· Simulates MouseWheel support for internal mouse
· Simulates MouseWheel operation, by merging normal mouse data with
AlphaKeyTM keyboard codes
· Merges internal and external mouse data
· Operates safely with PS/2 mouse protocol

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

Interrupts and General
Purpose Events

The UR8H359 provides up to 5
customizable ACPI General
Purpose Events (GPE). The IC
generates two types of interrupts:
SCI and SWI. The type of interrupt
generated depends on the type of
event that caused it. When a
standard SMBus command occurs,
the EC generates an SCI interrupt.
For any other General Purpose
Events (GPE), an SWI interrupt
occurs. GPE events can include
lid and dock events or power
button presses.

SWI interrupts have the ability to
wake-up the system if it is in
suspend. SCI interrupts cannot
do this.

Power Management

The USAR ACPITroller

342

typically consumes less than 1 µA.
For further power savings, the
three PS/2 ports use USAR's
patented Zero-Power

PS/2

technology and the one SMBus
port uses USAR's patented Zero-
Power

SMBus technology. The IC

can power down even when
devices are connected and active,
and wake up when needed without
data loss.

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

AlphaKey

Keyboard Manager

The AlphaKey

Keyboard Manager is the most advanced keyboard

management module in the industry today and the first one to integrate the
laptop keyboard matrix with system management tasks through ACPI and
SMBus.

USAR's AlphaKey

provides OEMs with extreme flexibility both with PS/2

keyboard functionality as well as with designating which system
management tasks users can control through the keyboard.

The USAR AlphaKey

Keyboard Manager communicates with the HID

Controller, the ACPI EC, the Virtual SMBus Device Manager and the
external PS/2 ports of the UR8HC342.

USAR's AlphaKey

will simultaneously support both an external keyboard

(including Windows

and Japanese layout keyboards) and an internal

scanned key matrix. The internal scanned matrix layout can be
programmed through an extended set of keyboard commands.
AlphaKey

handles PS/2 keyboard commands, supports external

keyboard hot-plug-ins and merges internal and external data as if they
were coming from one source.

In addition, OEMs can assign and download custom-defined keyboard
macros or procedures that can be invoked through simple key presses to
the AlphaKey's

internal RAM memory.

AlphaKey

Features

· Supports IBM standard 101/102

keyboard including Windows®,
On-Now Power keys and Japanese
keyboard keys

· Allows full OEM programmability,

including programmable scan
matrix

· Offers support of OEM-defined

firmware procedures that can be
invoked by key presses

· Unique Zero-Power

operation of

the scanned matrix and the PS/2
embedded port

· Provides "Protocol Safe" handling

of external PS/2 devices

· Allows hot-plug connection of

external keyboard

· External and internal keyboards

operate simultaneously; data is
merged

· Auto-detects type of device in any

external PS/2 port

· Interoperability between 3-Volt and

5-Volt PS/2 devices without the
need for external level-shifting
circuitry

· Supports all three Scan Code Sets
· Offers N-Key rollover and ghost key

detection

· Enables single-hand data entry

through "Sticky Key" mode of
operation

· Supports embedded numeric

keypad

Standard PS/2
Key Codes

Key
Combination
Macros

Mouse and
WheelMouse
data emulation

ACPI SCI Events

Control of
General I/O pins

Control of Virtual
SMBus Devices
for LCD control,
etc.

On-Now ACPI
Keys

Figure 1: AlphaKey

features

USAR ACPITroller

342 UR8HC342

Preliminary
USAR System Management family
product specifications

USAR A Semtech Company
Datasheet

DOC8-342-DS-101

USAR A Semtech Company

Notes for Electricals

Note1:

Current Consumption values do not
include any loading on the Output
pins or Analog Reference Current for
the built-in A/D or D/A modules.

Note 2:

Since the built-in A/D module
consumes current only during short
periods of time (when A/D conversion
is actually requested), the Analog
Reference Current for the built-in A/D
module is not a significant contributor
to the overall power consumption.

Note 3:

The Analog Reference Current for the
built-in D/A module correlates linearly
to the Output Voltage. For D/A output
of 0V, the Analog Reference Current is
null. For D/A outputs approaching Full
Scale (AVREF), the maximum Analog
Reference Current is indicated in this
Table. This current is a significant
contributor to the overall power
consumption.

UR8HC342 Electrical Characteristics, continued

Recommended Operating Conditions, Digital Section
(VSS = 0V, Ambient Temperature T

is in the range T

LOW

to T

HIGH

)

Parameter

Symbol

Min

Typ

Max

Unit

Supply voltage

2.7

3.0

5.5

Input logic high
voltage
All pins except 2-9

0.8V

Pins 2-9
(PS/2 ports xxxDAT,
xxxCLK, GIO16/SW16,
GIO17/SW17)

0.8V

5.5

Input logic low

voltage

All pins except 28

0.2V

Pin 28 (OSCI)

0.16V

Input current
V

= V

, V

)

/ I

-5.0

5.0

µA

Input Pull-up Current
(pins 56-58 / IP6-IP8,
V

= V

)

PUP

-120

-10

µA

Output voltage
I

= -1.0 mA

-1.0

= 1.6 mA

0.4

Current Consumption
(see note 1 below)
Full Speed Mode
(Fosc=4MHz)

3.5

7.0

Reduced Power Mode
(Fosc=4MHz)

750

µA

Stop Mode
(Interrupts active, Fosc=0)

1.0 (T

= 25ºC)

10(T

= 85ºC )

µA

Recommended operating conditions, analog section
(VSS = 0V, Ambient Temperature T

is in the range T

LOW

to T

HIGH

)

Parameter

Symbol

Min

Typ

Max

Unit

Analog Signal Ground

Analog Reference Voltage

REF

2.7

A/D Resolution -

Bits

A/D Absolute Accuracy

± 4

LSb

A/D Analog Input
Voltage Range

AVREF

A/D Analog Input Current

5.0

µA

Analog Reference Current
(see note 2)
(A/D is active)

AVREF

200

µA

D/A Resolution -

Bits

D/A Absolute Accuracy -

2.5

D/A Output Impedance

2.5

4.0

KOhms

Analog Reference Current
(see note 3)
(D/A is active,
Output = Full Scale)

AVREF

3.2

Note 1: please see left
Note 2: please see left
Note 3: please see left

Description

For sales information
and product literature,
contact:

USAR A Semtech Company
568 Broadway
New York, NY 10012
info@usar.com
http://www.usar.com
212 226 2042 Telephone
212 226 3215 Telefax

In Japan:
Semtech Japan
Tel: 81-45-948-5925
Fax: 81-45-948-5930

In Taiwan:
Semtech Asia/Pacific Sales
Tel: 011-886-2-2748-3380
Fax: 011-886-2-2748-3390

Koryo Electronics Co., Ltd.
Telephone +886-2-2698-1143
E-mail alex.chen@koryo.com.tw

In Korea:
Semtech Korea
Tel: 011-82-2-527-4377
Fax: 011-82-2-527-4376

In Europe
Semtech Limited
Tel: +44-1592-630350
Fax: +44-1592-774781

Copyright 2000 USAR A Semtech Company. All rights
reserved. ACPITroller and Zero-Power are trademarks of
USAR Systems, Inc. USAR and the USAR logo are
registered trademarks of USAR A Semtech Company. All
other trademarks belong to their respective companies.

INTELLECTUAL PROPERTY DISCLAIMER
This specification is provided "as is" with no warranties
whatsoever including any warranty of merchantability,
fitness for any particular purpose, or any warranty
otherwise arising out of any proposal, specification or
sample.

A license is hereby granted to reproduce and distribute
this specification for internal use only. No other license,
expressed or implied to any other intellectual property
rights is granted or intended hereby. Authors of this
specification disclaim any liability, including liability for
infringement of proprietary rights, relating to the
implementation of information in this specification. Authors
of this specification also do not warrant or represent that
such implementation(s) will not infringe such rights.

A Semtech Company

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: UR8HC342

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: UR8HC342