USAR ACPITrollerTM342 UR8HC342
USAR ACPITrollerTM342
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
Copyright 2000 USAR Systems, Inc. All rights
reserved.
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
1
Pin Assignments
The USAR ACPITrollerTM342
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 ACPIcompliant 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 ZeroPower™ 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.
• AlphaKeyTMkeyboard 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 autodetect 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
• AlphaMouseTMPointing 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
A Semtech Company
IVSD2:1/AN1
SMBEN
ROW7
ROW6
ROW5
ROW4
VREF
AVSS
VCC
DQ2
DQ1
80
DQ0
DQ3
DQ4
DQ5
GPE6/IVSD1:1/PBOVR
GPE5/IVSD1:0/PB
DQ7
DQ6
61
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
20
1
UR8HC342-FQ
A2
21
IRQ12
A20GATE
IRQ1
RESET
CNVSS
SWI
SYSSUS
XIN
XOUT
VSS
SCRLK/IVSD0:3
NUMLK/IVSD0:2
CAPSLK/IVSD0:1
ROW3
ROW2
ROW1
ROW0
KATAKANA/IVSD0:0
COL15
40
COL14
60
GPE2
SMBINT
KEYWKUP
COL0
COL1
COL2
COL3
COL4
COL5
COL6
COL7
COL8
COL9
COL10
COL11
COL12
COL13
41
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
USAR –– A Semtech Company
Descri
2
USAR ACPITrollerTM342 Block Diagram
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
IRQ1
IRQ12
KBINIT
A20Gate
D0-D7
ACPIS
8042S
IOW, IOR, A2
SCI
SWI
Keyboard Controller
8
Embedded Controller
3 x PS/2
Ports
KBC Data Register
KBC Control/StatusB
EC Data Register
EC Control/Status
8 x 16
Matrix
8042
KBC
Registers
ACPI
EC
Registers
IVSD
GPIO
Ivsd0
A/D
Ivsd2
D/A, PWM
Ivsd1
GPE
Ivsd3
SMBus
Host
4
2
2
4
2
SMBINT
SMBEN
4 bit port
expander
10 bit A/D
Brightness/
Contrast
PWBOVERRIDE
PWBUTTON
GPEx
SMBus
Pin Definitions
USAR ACPITrollerTM342 UR8HC342
Preliminary
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product specifications
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Datasheet
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3
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Pin Numbers
Mnemonic LQFP Name and Function
Power Supply
AVSS 73 Analog Signal Ground
CNVSS 24 Should be tied to ground
VCC 71 Vcc 3-5 Volts
VREF 72 Analog circuitry reference voltage
VSS 30 Ground
Oscillator pins
XIN 28 Oscillator input (8 MHz operating freq)
XOUT 29 Oscillator output
Reset
_RESET 25 Controller hardware reset pin
System bus
interface pins
_8042S 16 8042 keyboard controller port select
signal input
_ACPIS 18 ACPI embedded controller port
select signal output
_IOR 15 X-bus/ISA address I/O signal input
_IOW 14 X-bus/ISA address I/O write signal input
_IRQ1 23 Keyboard interrupt output
_IRQ12 22 Mouse interrupt output
_KBINIT 20 Keyboard initialize output
A2 17 X-bus / ISA address 2 input
A20GATE 21 A20 Gate output signal
DQ0-DQ7 70-63 X-bus/ ISA parallel data I/O ports
ACPI & SMBus Signals
SCI 19 System control interrupt output
_SMBINT 56 SMBus interrupt
_SWI 27 System wake-up event interrupt
output
_SYSSUS 26 System suspend input
IVSD00/SCROLL_LOCK 31 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 32 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 33 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 34 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 62 IVSD1 bit 0 or PWM output
IVSD11/PWM2 61 IVSD1 bit 1 or PWM output
IVSD12/DA1/PWM1 11 This pin can be configured as GPIO, as D/A
output, or PWM output
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
Descri
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Datasheet
DOC8-342-DS-101
4
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Pin Definitions
Pin Numbers
Mnemonic LQFP Name and Function
ACPI & SMBus Signals (con’t)
IVSD13/DA2/PWM2 10 This pin can be configured as GPIO, as D/A
output, or PWM output
IVSD20 1 This pin can be configured as a 10-bit A/D
input or logic I/O
IVSD20 1 This pin can be configured as a 10-bit A/D
input or logic I/O
IVSD13/DA2/PWM2 10 This pin can be configured as GPIO, as D/A
output, or PWM output
IVSD20 1 This pin can be configured as a 10-bit A/D
input or logic I/O
IVSD21/AN1 80 This pin can be configured as a 10-bit A/D
input or logic I/O.
IVSD22/AN2 79 IVSD2 bit or A/D input
IVSD30/GPE0/LID 13 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 12 IVSD3 bit 1 or ACPI GPE; capable of
detecting both negative and positive signal
transitions; typically serves the DOCK ACPI
function
IVSD32/GPE2/_PWBUTTON 60 IVSD3 bit 2 or ACPI GPE; typically an ACPI
""Power Button"" input.
IVSD33/GPE3/ 59 IVSD3 bit 3 or ACPI GPE; typically an ACPI
/_PWBOVERRIDE ""Power Button Override"" input
IVSD34/GPE4 58 IVSD3 bit 4 or ACPI GPE 4
IVSD35/GPE5 57 IVSD3 bit 5 or ACPI GPE 5
SCL0 2 This pin acts as the clock line for the SMBus
SDA0 3 This pin acts as the data line for the SMBus
SMBEN 78 This output pin allows the SMBus latch to
notify the ACPITroller™ Basic when SMBus
activity has been detected. It is used to
wake the ACPITroller™ 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 55 Key wake-up output
ROW0-ROW7 38-74 Row matrix inputs
PS/2 Ports
IMCLK 6 PS/2 clock line for internal mouse
IMDAT 9 PS/2 data line for internal mouse
PS20CLK 5 Clock line for external PS/2 por t 0; both
external PS/2 ports support hot-plug ins and
auto-select for keyboard or mouse
PS20DAT 8 Data line for external PS/2 por t 0
PS21CLK 4 Clock line for external PS/2 por t 1
PS21DAT 7 Data line for external PS/2 por t 1
Note 1: An underscore in front of the pin
mnemonic denotes an active low signal.
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
5
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 ACPITrollerTM342 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-PowerTMSMBus 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 ACPITrollerTM342 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.
AlphaMouseTMPointing Devices Manager
The USAR AlphaMouse™ 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 ACPITroller™ 342.
Different types of standard mice (two-button, three-button, MouseWheel)
can be connected simultaneously, as the AlphaMouseTMpointing 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 AlphaMouse™ pointing devices manager receives its pointing
device input through one or more of the USAR ACPITroller™ 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 AlphaMouse™ pointing devices manager for proper
initialization and further data and command handling. The USAR
AlphaMouse™ pointing device manager communicates with the host
system through the mouse port of the HID controller.
AlphaMouse
TM
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
AlphaKey™ keyboard codes
• Merges internal and external mouse data
• Operates safely with PS/2 mouse protocol
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Datasheet
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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.D
Power Management
The USAR ACPITrollerTM342
typically consumes less than 1 µA.
For further power savings, the
three PS/2 ports use USAR's
patented Zero-PowerTMPS/2
technology and the one SMBus
port uses USAR's patented ZeroPowerTMSMBus technology. The IC
can power down even when
devices are connected and active,
and wake up when needed without
data loss.
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
USAR – A Semtech Company
Datasheet
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7
USAR –– A Semtech Company
AlphaKeyTMKeyboard Manager
The AlphaKeyTMKeyboard 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 AlphaKeyTMprovides 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 AlphaKeyTMKeyboard 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 AlphaKeyTMwill 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.
AlphaKeyTMhandles 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’sTMinternal RAM memory.
AlphaKeyTMFeatures
• 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-PowerTMoperation 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: AlphaKeyTMfeatures
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
Suggested Interfacing for the USAR ACPITrollerTM342 UR8HC342-FQ
USAR – A Semtech Company
Datasheet
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USAR –– A Semtech Company
Copyright 1999-2000, USAR Systems Inc.
All rights reserved.
UR8HC342-FQ
80-pin LQFP
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
Mechanical Information for FQ (80 Pin LQFP) Package
USAR – A Semtech Company
Datasheet
DOC8-342-DS-101
9
USAR –– A Semtech Company
HD
D
80 61
1
60
D
M
e
b2
I2
ME
20
21 40
b
Recommended Mount Pad
E
HE
A
41
Symbol
L1
e
F
c
A1 A2
L
Detail F
y
Dimension in Millimeters
Min Nom Max
–
A
A1
0
––
2
A
b
c
D
E
e
H
H
–
D
E
L
1
L
b
M
M
––
y
–
2
I
2
1.0
D
E
0.1
1.4
0.5
1.0
0.225
12.4
12.4
–
1.7
0.2
0.280.180.13
0.1750.1250.105
12.112.011.9
12.112.011.9
–
14.214.013.8
14.214.013.8
0.70.50.3
–
0.1
–
10˚0˚
––
––
––
––
USAR ACPITrollerTM342 UR8HC342
Preliminary
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product specifications
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Datasheet
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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
A is in the range TLOW to T
HIGH)
Parameter Symbol Min Typ Max Unit
Supply voltage VDD
2.7 3.0 5.5 V
Input logic high
voltage
All pins except 2-9 VIH
0.8VDD VDD V
Pins 2-9
(PS/2 ports xxxDAT,
xxxCLK, GIO16/SW16,
GIO17/SW17) VIH 0.8VDD 5.5 V
Input logic low
voltage
All pins except 28 VIL 0 0.2VDD V
Pin 28 (OSCI) VIL 0 0.16VDD V
Input current
VI = VSS, VDD)IIL / IIL -5.0 0 5.0 µA
Input Pull-up Current
(pins 56-58 / IP6-IP8,
VI = VSS)IPUP -120 -10 µA
Output voltage
I
OH = -1.0 mA V
OH VDD-1.0 V
IOL = 1.6 mA VOL 0.4 V
Current Consumption
(see note 1 below)
Full Speed Mode
(Fosc=4MHz) IDD 3.5 7.0 mA
Reduced Power Mode
(Fosc=4MHz) IDD 750 µA
Stop Mode
(Interrupts active, Fosc=0) 1.0 (T
A = 25ºC)
IDD .1 10(TA = 85ºC ) µA
Recommended operating conditions, analog section
(VSS = 0V, Ambient Temperature TA is in the range TLOW to THIGH)
Parameter Symbol Min Typ Max Unit
Analog Signal Ground AVSS 0V
Analog Reference Voltage AVREF 2.7 VDD VDD V
A/D Resolution - 10 Bits
A/D Absolute Accuracy ± 4 LSb
A/D Analog Input
Voltage Range VIA AVSS AVREF V
A/D Analog Input Current IIA 5.0 µA
Analog Reference Current
(see note 2)
(A/D is active) IAVREF 200 µA
D/A Resolution - 8 Bits
D/A Absolute Accuracy - 2.5 %
D/A Output Impedance RO 1 2.5 4.0 KOhms
Analog Reference Current
(see note 3)
(D/A is active,
Output = Full Scale) IAVREF 3.2 mA
Note 1: please see left
Note 2: please see left
Note 3: please see left
USAR ACPITrollerTM342 UR8HC342
Preliminary
USAR System Management family
product specifications
This Page Left Intentionally Blank
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Datasheet
DOC8-342-DS-101
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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
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