Diamond Systems PLT-T56N-4G User manual

Diamond Part Number 7468050
PLUTO SINGLE BOARD COMPUTER
ETX Form-factor Embedded Platform with
Configurable CPU and PC/104-Plus Expansion
Revision
Date
Comment
A3
5/13/14
Updated with new AMD G-Series Pluto models
A4
4/30/15
Updated with new Pluto E3845 models
Copyright 2015
FOR TECHNICAL SUPPORT Diamond Systems Corporation
PLEASE CONTACT: 555 Ellis Street.
Mountain View, CA 94043 USA
[e-mail] Tel [phone]
Fax [phone]
www.diamondsystems.com

Pluto User Manual A4 www.diamondsystems.com Page 2
CONTENTS
Important Safe-Handling Information.....................................................................................................................3
1. Introduction.......................................................................................................................................................5
1.1 ETX Computer-on-Module (COM) Features .................................................................................................6
1.2 Pluto Baseboard Features.............................................................................................................................6
1.3 Software Compatibility...................................................................................................................................7
1.4 Thermal Considerations and Heatspreader ..................................................................................................7
2. Functional Overview.........................................................................................................................................8
2.1 Block Diagrams..............................................................................................................................................8
2.2 Baseboard Dimensions .............................................................................................................................. 10
2.3 Baseboard Connectors and Jumpers......................................................................................................... 11
2.4 Interface Connector Summary.................................................................................................................... 12
2.5 Configuration Jumper Summary................................................................................................................. 13
3. Getting started ............................................................................................................................................... 14
3.1 Introducing the Pluto Development Kit....................................................................................................... 14
3.1.1 Pluto Cable Kit ................................................................................................................................... 15
3.2 System Setup ............................................................................................................................................. 16
3.2.1 Display ............................................................................................................................................... 16
3.2.2 Keyboard and Mouse......................................................................................................................... 16
3.2.3 Mass Storage Devices....................................................................................................................... 16
3.2.4 Connecting Power.............................................................................................................................. 16
3.2.5 Installing Pluto in an Enclosure.......................................................................................................... 17
3.3 Booting the System .................................................................................................................................... 17
3.3.1 BIOS Setup........................................................................................................................................ 17
3.3.2 Operating System Drivers.................................................................................................................. 17
4. Interface Connector Details.......................................................................................................................... 18
4.1 PC/104-Plus stacking location (CONA1, PC104+)..................................................................................... 18
4.1.1 PC/104-Plus ISA Bus (CONA1)......................................................................................................... 18
4.1.2 PC/104-Plus PCI Bus (PC104+)........................................................................................................ 20
4.2 USB1-USB4 (USB1, USB2) ....................................................................................................................... 21
4.3 Audio (AUDIO1).......................................................................................................................................... 21
4.4 Digital I/O (DIO1)........................................................................................................................................ 21
4.5 CPU Fan Power (FAN1)............................................................................................................................. 22
4.6 CompactFlash Socket (CFD1).................................................................................................................... 22
4.7 Ethernet Status LEDs (LANLED1, LANLED2) ........................................................................................... 23
4.8 Ethernet LAN Interfaces (LAN1, LAN2)...................................................................................................... 23
4.9 IDE (IDE1) .................................................................................................................................................. 24
4.10 Infrared Interface (IR1) ............................................................................................................................... 25
4.11 LCD Inverter Interface (INV1)..................................................................................................................... 25
4.12 LCD LVDS Out (LVDS1) ............................................................................................................................ 26
4.13 Utility Signals (JFRT1)................................................................................................................................ 27
4.14 COM2 RS-422/485 Interface (JCOM1) ...................................................................................................... 27
4.15 DC Power Input (PWR1) ............................................................................................................................ 28
4.16 TV Out (TV1) .............................................................................................................................................. 29
4.17 Auxiliary Fan Power (FAN2)....................................................................................................................... 29
4.18 PS/2 Keyboard and Mouse (KBM1) ........................................................................................................... 29
4.19 Parallel/Floppy (LPT1)................................................................................................................................ 30
4.20 COM1-COM4 RS-232 (COMA, COMB) ..................................................................................................... 31
4.21 VGA Video Out (VGA1).............................................................................................................................. 31
4.22 SATA (SATA1, SATA2).............................................................................................................................. 32
4.23 LPC (LPC1) ................................................................................................................................................ 32
4.24 DDI (DDI1).................................................................................................................................................. 33
5. Configuration Jumper Details ...................................................................................................................... 34
5.1 CMOS Setup Clear (JBAT1)....................................................................................................................... 34
5.2 COM2 RS-232/422/485 Mode (JRS2)........................................................................................................ 34
5.3 CompactFlash IDE Mode (JCFD1)............................................................................................................. 35
5.4 LCD Panel Voltage Select (JVLCD1)......................................................................................................... 35
5.5 LCD Backlight Select (JBLON1)................................................................................................................. 35
5.6 Watchdog Timer Mode (JWT1) .................................................................................................................. 36

Pluto User Manual A4 www.diamondsystems.com Page 3
IMPORTANT SAFE-HANDLING INFORMATION
WARNING: ESD-Sensitive Electronic Equipment!
Observe ESD-safe handling procedures when working with this product.
Always use this product in a properly grounded work area and wear
appropriate ESD-preventive clothing and/or accessories.
Always store this product in ESD-protective packaging when not in use.
Safe Handling Precautions
Pluto contains numerous I/O connectors that connect to sensitive electronic components. This creates many
opportunities for accidental damage during handling, installation and connection to other equipment. The list here
describes common causes of failure found on boards returned to Diamond Systems for repair. This information is
provided as a source of advice to help you prevent damaging your Diamond (or any vendor’s) embedded
computer boards.
ESD damage –This type of damage is almost impossible to detect, because there is no visual sign of failure or
damage. The symptom is that the board simply stops working, because some component becomes defective.
Usually the failure can be identified and the chip can be replaced.
To prevent ESD damage, always follow proper ESD-prevention practices when handling computer boards.
Damage during handling or storage –On some boards we have noticed physical damage from mishandling. A
common observation is that a screwdriver slipped while installing the board, causing a gouge in the PCB surface
and cutting signal traces or damaging components.
Another common observation is damaged board corners, indicating the board was dropped. This may or may not
cause damage to the circuitry, depending on what is near the corner. Most of our boards are designed with at
least 25 mils clearance between the board edge and any component pad, and ground / power planes are at least
20 mils from the edge to avoid possible shorting from this type of damage. However these design rules are not
sufficient to prevent damage in all situations.
A third cause of failure is when a metal screwdriver tip slips, or a screw drops onto the board while it is powered
on, causing a short between a power pin and a signal pin on a component. This can cause overvoltage / power
supply problems described below. To avoid this type of failure, only perform assembly operations when the
system is powered off.
Sometimes boards are stored in racks with slots that grip the edge of the board. This is a common practice for
board manufacturers. However our boards are generally very dense, and if the board has components very close
to the board edge, they can be damaged or even knocked off the board when the board tilts back in the rack.
Diamond recommends that all our boards be stored only in individual ESD-safe packaging. If multiple boards are
stored together, they should be contained in bins with dividers between boards. Do not pile boards on top of each
other or cram too many boards into a small location. This can cause damage to connector pins or fragile
components.
Power supply wired backwards –Our power supplies and boards are not designed to withstand a reverse
power supply connection. This will destroy each IC that is connected to the power supply. In this case the board
will most likely will be unrepairable and must be replaced. A chip destroyed by reverse power or by excessive
power will often have a visible hole on the top or show some deformation on the top surface due to vaporization
inside the package. Check twice before applying power!
Board not installed properly in PC/104 stack –A common error is to install a PC/104 board accidentally shifted
by 1 row or 1 column. If the board is installed incorrectly, it is possible for power and ground signals on the bus to
make contact with the wrong pins on the board, which can damage the board. For example, this can damage
components attached to the data bus, because it puts the 12V power supply lines directly on data bus lines.

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Bent connector pins –This type of problem is often only a cosmetic issue and is easily fixed by bending the pins
back to their proper shape one at a time with needle-nose pliers. The most common cause of bent connector pins
is when a PC/104 board is pulled off the stack by rocking it back and forth left to right, from one end of the
connector to the other. As the board is rocked back and forth it pulls out suddenly, and the pins at the end get
bent significantly. The same situation can occur when pulling a ribbon cable off of a pin header. If the pins are
bent too severely, bending them back can cause them to weaken unacceptably or even break, and the connector
must be replaced.

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1. INTRODUCTION
Pluto is a high performance, highly integrated board-level embedded computer matching the footprint of the
popular ETX computer-on-module (COM) standard.
Pluto’s CPU core consists of an ETX CPU module mounted on its bottom side, an approach that improves
thermal management and increases the space for I/O functions and connectors. This innovative design has
enabled Pluto to integrate additional serial and Ethernet controllers, a complete set of peripheral interface header
connectors, and a PC/104-Plus expansion stack location –all within the compact ETX footprint.
Thanks to Pluto’s flexible architecture, you can select from a wide range of ETX-based CPUs to meet each
application’s specific performance, power, and cost requirements. Available processors include the Intel Bay Trail
E3845 CPU and two of the AMD Fusion G-Series CPUs, the T56N and T40N. What’s more, Pluto’s on-board
PC/104-Plus stack location facilitates the addition of custom or off-the-shelf ISA- and PCI-interfaced expansion
modules, helping you satisfy your application’s precise requirements.
Pluto is offered in a range of models that vary according to the choice of ETX CPU module and on-board SO-
DIMM SDRAM capacity.
Pluto Model
ETX CPU
Module
Processor Type
Processor
Clock
SO-DIMM
DRAM
Operating
Temperature
PLT-T56N-4G
ETX-T56N-01
AMD Fusion G-T56N
1.65GHz
4GB
-20°C to +71°C
PLT-T56N-2G
ETX-T56N-01
AMD Fusion G-T56N
1.65GHz
2GB
-20°C to +71°C
PLT-T40N-4G
ETX-T40N-01
AMD Fusion G-T40N
1.0GHz
4GB
-20°C to +71°C
PLT-T40N-2G
ETX-T40N-01
AMD Fusion G-T40N
1.0GHz
2GB
-20°C to +71°C
PLT-3845XT-8G
ETX-3845-01
Intel E3845 quad core
1.91GHz
8GB
-40°C to +85°C
PLT-3845XT-4G
ETX-3845-01
Intel E3845 quad core
1.91GHz
4GB
-40°C to +85°C
PLT-3845XT-2G
ETX-3845-01
Intel E3845 quad core
1.91GHz
2GB
-40°C to +85°C
Figure 1: Edge View of the Pluto Embedded Platform
Pluto’s features comprise functions provided by the “Pluto baseboard”(top board in stack shown in Figure 1)
along with functions implemented on the attached ETX computer-on-module (COM) macrocomponent (bottom
board in stack), along with a heat-spreader (or heatsink) mounted on the bottom.

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1.1 ETX Computer-on-Module (COM) Features
Note: The ETX COM features listed here are typical. Refer to the appropriate ETX CPU
module’s user manual for detailed specifications.
Processor: Choice of AMD Fusion G-Series G-T56N or G-T40N CPUs, or Intel E3845 quad core Bay Trail
CPU
RAM: 200-pin SO-DIMM socket; supports up to 8GB DDR3 SDRAM
Graphics:
VGA CRT interface
LCD flat panel interface (LVDS); provides LCD backlight control signals
TV output
SDVO interface (connector directly on ETX module)
Audio: AC’97 CODEC; mic in, line in/out signals
1 IDE interface:
Supports two devices (Master/Slave)
Usable in PIO or UDMA mode
2 SATA (Serial ATA) interfaces
Support one device each
Connectors directly on ETX COM module
Floppy/parallel port: shared interface
Ethernet interface: 1 10/100Base-T port (Realtek 8103EL)
2 serial ports; 1 RS-232/422/485, 1 RS-232 only
Keyboard/mouse: PS/2 ports; USB also usable for keyboard/mouse
4 USB 2.0 ports
Other: SMbus, IrDA serial interfaces; PC speaker interface; watchdog timer
Dual system expansion buses: 16-bit ISA and 32-bit PCI
ETX 3.0 compliant form-factor (physical and electrical)
1.2 Pluto Baseboard Features
Additional Ethernet interface: 10/100Base-T port (Realtek 8103EL)
2 additional RS-232 serial ports
Digital I/O: 8 logic-level digital inputs and outputs
On-board piezoelectric PC speaker
ATX-style power input and system control
On-board RTC backup battery
ETX COM socket on bottom; conforms to ETX v3.0 specification
I/O connectors provided for all system I/O
On-board CompactFlash socket; configurable as IDE Master or Slave
On-board PC/104-Plus socket; supports ISA and PCI expansion buses
Operating temperature: -20°C to +71°C (-2°F to +160°F) or -40°C to +85°C (-40°F to +185°F)
Form-factor: ETX footprint (4.5 x 3.7 in.)

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1.3 Software Compatibility
Pluto’s operating system compatibility is a function of both the Pluto baseboard and the specific ETX CPU module
attached to it. The baseboard and has been qualified for use with Windows XP/XPe and Linux 2.6. The OSes
supported by the ETX CPU module vary according to the specific ETX module used. Consult the appropriate ETX
CPU module’s user manual for details on its OS support.
1.4 Thermal Considerations and Heatspreader
Pluto models based on the Intel E3845 CPU specified for an operating temperature range of -40oC to +85oC.
Models with the AMD G-Series CPUs are specified for an operating temperature range of -20oC to +71oC.
Diamond Systems provides a heatspreader attached to Pluto as a conductive cooled thermal layer. However, this
heatspreader by itself does not constitute the complete thermal solution necessary for any specific
implementation, but provides a common interface between the single board computer and the customer’s
implementation-specific thermal solution.
The outside surface of the Pluto heatspreader must be kept at a temperature not to exceed +71oC. If your
environment causes the temperature on the outside surface of the heatspreader to exceed the appropriate
temperature, you are responsible for removing the additional heat from the system through either an additional
passive thermal solution or fan solution.
Pluto’s integrated heatspreader makes thermal contact with the heat generating components and provides a flat
surface on the bottom of the assembly for mating to the system enclosure. This technique facilitates efficient
removal of heat from the COM module without the need for a fan. Four mounting holes on the bottom of the
conduction cooled heatspreader are provided to mount Pluto in an enclosure or to a bulkhead. These mounting
holes are #6-32 threaded holes on 2.8" centers.

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2. FUNCTIONAL OVERVIEW
2.1 Block Diagrams
Figure 1 shows Pluto’s functional blocks, including circuitry contained on both the Pluto baseboard and the ETX
CPU module. As indicated in the block diagram, the baseboard circuitry primarily comprises interface
connections and additional LAN and serial I/O, while the ETX module integrates the system’s core embedded PC
functionality. Although ETX CPU module processors and precise functions vary between specific modules, the
block diagram of a typical ETX CPU module appears in Figure 3.
Figure 2: Pluto Functional Block Diagram
IrDA

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Figure 3: Typical ETX CPU Module Functional Block Diagram

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2.2 Baseboard Dimensions
Figure 4 shows the overall dimensions of the Pluto baseboard.
Figure 4: Baseboard Dimensions

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2.3 Baseboard Connectors and Jumpers
The diagram in Figure 5 illustrates the position of interface and bus connectors and configuration jumpers located
on the top side of the Pluto baseboard. Pluto’s ETX CPU module plugs into four high-density connectors on the
baseboard’s bottom side, and is secured via screws and standoffs to the baseboard’s four corner mounting holes.
Figure 5: Baseboard Connectors and Jumpers

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2.4 Interface Connector Summary
The following table summarizes the functions of Pluto’s interface, utility, and power connectors. The table also
identifies which major subsystem –ETX CPU module or Pluto baseboard –provides the electronics associated
with each connector.
Signal functions relating to all of Pluto’s interface connectors are discussed in greater detail in Section 4 of this
document. Diamond offers an optional Pluto Cable Kit, which provides mating cable assemblies for most of
Pluto’s I/O interface connectors. The table below indicates which of Pluto’s interfaces connectors are supported
by the Pluto Cable Kit.
Interface Function
Connector
Designation
Associated
Subsystem
Supported by
Cable Kit?
Audio
AUDIO1
ETX module
Yes
COM1-COM4 RS-232
COMA, COMB
ETX and baseboard
Yes
COM2 RS-422/485
JCOM1
ETX and baseboard
No
CompactFlash Socket
CFD1
ETX module
n/a
DC Power Input
PWR1
Various
Yes
Digital I/O
DIO1
Pluto baseboard
No
Ethernet LAN Interfaces
LAN1, LAN2
ETX module
Yes
Ethernet Status LEDs
LANLED1, LANLED2
ETX and baseboard
No
Fan Power
FAN1, FAN2
ETX module
No
IDE
IDE1
ETX module
Yes
Infrared Interface
IR1
ETX module
No
LCD Inverter Interface
INV1
Pluto baseboard
No
LCD LVDS Out
LVDS1
ETX module
No
PC/104-Plus ISA bus
CONA1
ETX module
n/a
PC/104-Plus PCI bus
PC104+
ETX module
n/a
Printer/Floppy
LPT1
ETX module
Yes
PS/2 Keyboard/Mouse
KBM1
ETX module
Yes
SATA interfaces
SATA1, SATA2
On ETX module
Yes
Serial Digital Video Output
SDVO
On ETX module
No
TV Out
TV1
ETX module
Yes
USB1-USB4
USB1, USB2
ETX module
Yes
Utility Signals
JFRT1
ETX and baseboard
No
VGA Video Out
VGA1
ETX module
Yes

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2.5 Configuration Jumper Summary
The Pluto baseboard’s configuration jumpers are listed below. Details regarding the use of these jumpers appear
in Section 5 of this document.
Jumper
Description
JBAT1
CMOS Setup clear
JRS2
COM2 RS-232/422/485 mode select
JCFD1
CompactFlash IDE mode
JVLCD1
LCD panel voltage select
JWT1
Watchdog timer mode
JBLON1
LCD Backlight select

Pluto User Manual A4 www.diamondsystems.com Page 14
Important Safe-Handling Information
WARNING: ESD-Sensitive Electronic Equipment!
Observe ESD-safe handling procedures when working
with this product.
Always use this product in a properly grounded work area
and wear appropriate ESD-preventive clothing and/or
accessories.
Always store this product in ESD-protective packaging
when not in use.
Please refer to page 3 of this manual (“Important Safe-Handling Information”) for further
details.
3. GETTING STARTED
First-time Pluto users normally receive the product as part of Diamond’s Pluto Development Kit, which provides
everything needed to ensure rapid application development. This section of the Pluto User Manual covers basic
hardware setup, power connection, system boot-up, and initial software configuration. After Pluto is up and
running, refer to the later sections of this manual for the detailed hardware and software reference information
needed to adapt the product to specific applications.
3.1 Introducing the Pluto Development Kit
The Pluto Development Kit provides everything required for Pluto-based rapid application development. The table
below lists the boards, cables, and other items included in the Development Kit.
Item
Diamond P/N
Description
1
Pluto SBC
2
C-PLT-KIT
Pluto Cable Kit
3
MTG104
PC/104 Mounting Kit
4
DOC-PKG
DSC Documentation Package
5
Pluto Quick Start Guide

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3.1.1 Pluto Cable Kit
The Pluto Cable Kit provides convenient access to all of Pluto’s I/O features. The kit’s 15 cable assemblies are
shown in the photo below, and identified in the table that follows.
Note: On each interface cable, the end of the cable connector that has a red wire going to it
should be oriented toward the end of the board connector that is labeled “pin 1” (refer to Figure 3
in Section 2 of this manual for an illustration showing the location and orientation of all of the
Pluto Baseboard’s interface connectors.
Item
Qty
Diamond P/N
Description
Connects to…
1
2
6989007
Dual USB
USB1, USB2
2
1
6989004
Audio in/out
AUDIO1
3
2
6989012
SATA data
ETX module
4
1
6989011
PS/2 keyboard/mouse
KBM1
5
2
6989015
Ethernet RJ-45
LAN1, LAN2
6
2
6989008
Dual serial RS-232
COMA, COMB
7
1
6989006
Parallel
LPT1
8
1
6989010
VGA
VGA1
9
1
6989001
Floppy
LPT1
10
1
6989005
IDE data
IDE1
11
1
6989002
DC power (4-wire)
PWR1
12
1
6989003
DC power (2-wire)
PWR1

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Caution! Be sure to connect the 2- and 4-wire baseboard DC cable
assemblies’ yellow wire (+12V) to pin 1, the black wires (ground) to pins 2,
3, and 4, and the red wires (+5VDC) to pins 5 and 6 of PWR1).
Caution! Be sure the system power supply is disconnected from its
AC power source prior to performing the following step…
3.2 System Setup
This section outlines a simple process for preparing Pluto for first-time operation. Additional details regarding
Pluto’s interface functions and connections may be found in Section 4 of this document (“Interface Connector
Details”) and from the attached ETX CPU module’s user manual.
3.2.1 Display
Pluto provides both VGA monitor and LVDS flat panel display interfaces. Recognizing the complexities
associated with connection to parallel-interfaced flat panels, this quick-start process assumes the use of a
standard VGA-compatible monitor (LCD or CRT). Plug the VGA interface cable into VGA1 on the baseboard, and
connect a VGA-compatible display to the female DB15 connector on its free end.
3.2.2 Keyboard and Mouse
Pluto supports operation using either PS/2- or USB-based keyboard and mouse devices. Plug the desired
interface cable (PS/2 or USB) from the Pluto Cable Kit into the designated connector on the baseboard (KBM1,
USB1, or USB2). Then plug the keyboard and mouse interface cables into the mating connectors on the Pluto
interface cables.
3.2.3 Mass Storage Devices
Next, connect Pluto to IDE or SATA hard drive and CD-ROM drives. Depending on the ETX CPU module
attached to your Pluto boardset, Pluto can operate with a combination of both IDE and SATA drives –both hard
drives and CD-ROMs –and can boot from any of them.
IDE drives -- For IDE drive connection, plug the 40-conductor IDE flat ribbon cable from the Cable Kit into
IDE1 of the Pluto baseboard, and plug the IDE cable’s female connectors into either or both drives’ male data
connectors. If an IDE hard drive is used, jumper the drive as the “Master” IDE device using a jumper block on
the drive (consult the drive’s documentation for details). If a second drive is to be connected to the IDE
interface cable, be sure to jumper it as the IDE “Slave” device.
SATA drives –For SATA drive connection, plug the SATA interface cable from the Cable Kit into one of the
SATA connectors on the ETX CPU module. Refer to the ETX module’s User Manual for details on its SATA
interface support and connector location.
3.2.4 Connecting Power
Depending on your Pluto setup’s power requirements, attach the tinned wires of either the 2-wire (+5V only) or 4-
wire (+5V and +12V) DC power cable assemblies (items 11 and 12) to the power input terminal block (PWR1) on
the baseboard. +12V DC power input is not required by either the Pluto baseboard or the attached ETX CPU
module; it is only needed if required by add-on or external devices, including:
Modules plugged into the PC/104-Plus socket that require +12V from the ISA or PCI buses
An external LCD backlight power supply powered by connector INV1
An auxiliary cooling fan powered with +12V through connector FAN2
External circuitry obtaining +12V power via DIO1 (the Digital I/O port)

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After attaching the desired DC power cable (2- or 4-wire) to the Pluto baseboard’s power input terminal block,
plug the power cable’s 4-pin male connectors into the female connector an ATX-style (or equivalent) power
supply’s 5.25-inch disk drive power cable.
Connect additional disk drive power cables from the power supply to the system’s IDE or SATA disk drives.
3.2.5 Installing Pluto in an Enclosure
Install the Pluto single board computer in an enclosure that has an appropriate mounting-hole pattern (2.8”
square).
Pluto’s heatspreader has four #6-32 threaded holes on 2.8” centers for mounting. Select four #6-32 threaded
screws of the proper length and head type to work with your enclosure. Allow a minimum of 0.20” and maximum
of 0.30” screw length for insertion into Pluto’s heatspreader. The total screw length will depend on the thickness
of your enclosure wall.
3.3 Booting the System
Power-up the VGA video monitor. Then power-up the system power supply. Pluto should begin its boot-up
sequence immediately, as evidenced by BIOS messages on the connected VGA display. You can run the BIOS
Setup utility and proceed to install an operating system on the boot drive just as you would on a normal desktop
PC.
Note: This process may vary according to the specific ETX CPU module attached to Pluto’s
bottom side. Please refer to the particular ETX module’s user manual for further details
3.3.1 BIOS Setup
The Pluto ETX CPU module’s BIOS ROM provides a wide range of configuration options. When you power up
Pluto for the first time, you should immediately enter the BIOS “Setup” utility in order to adjust BIOS settings to
match your system’s peripheral devices and other requirements and to configure various other hardware and
software parameters.
Options configurable via Setup typically include:
Number and type of mass storage devices
Boot device priority
Video display type and resolution
IDE, serial, and parallel interface modes and protocols
PCI and PnP configuration
Power management setup
Automatic power-up after LAN connection, RTC alarm, power resumption, etc.
System monitoring and security functions
The precise configuration options available via the BIOS Setup utility –and the specific keystroke sequence
required to launch Setup on power-up –vary according to the specific ETX CPU module attached to the Pluto
Baseboard. Refer to the ETX CPU module’s user manual for further details.
3.3.2 Operating System Drivers
Depending on the operating system to be installed on your Pluto setup, it may be necessary to install software
drivers for on-board interface controllers. The driver requirements (if any) will depend on both the Pluto
Baseboard and the attached ETX CPU module. Drivers for Windows XP and Linux 2.6, if required, are included
on the Software and Documentation CD that is included in the Pluto Development Kit. This software is also
available for download from Diamond’s website.

Pluto User Manual A4 www.diamondsystems.com Page 18
4. INTERFACE CONNECTOR DETAILS
This section describes the functions associated with the Pluto baseboard’s PC/104-Plus bus expansion stack,
utility, I/O interface, and power connectors in greater detail. Section 3.1.1 contains a list of ready-to-use interface
cables included in Diamond’s Pluto Cable Kit.
Many of the signals present on Pluto’s interface connectors are derived directly from signals on the attached ETX
CPU module’s high density ETX bus connectors. Please refer to the particular ETX module’s user manual for
further details on the definition and utilization of these signals. Additional information on these signals appears in
the ETX 3.0 specification, which is available from the ETX Industrial Group’s website (http://www.etx-
ig.de/specs/specs.php). Also available from that site is the latest ETX Design Guide, which provides further
details on the ETX connector signal functions and interface considerations. Several other relevant specifications
are referenced below.
4.1 PC/104-Plus stacking location (CONA1, PC104+)
These connectors accommodate the addition of either PC/104 (ISA bus only), PC/104-Plus (ISA and PCI buses),
or PCI-104 (PCI bus only) modules on top of the Pluto baseboard. Specifications and other details on all three of
these expansion module standards are available from the website of the PC/104 Consortium
(http://www.pc104.org).
4.1.1 PC/104-Plus ISA Bus (CONA1)
The 64- and 40-pin header connectors in location CONA1 carry the PC/104-Plus expansion stack location’s 104-
pin ISA bus signals. These signals, generated by Pluto’s ETX CPU module, are essentially identical in function
and signaling to those of the 16-bit PC/AT bus, except for the physical design.
A 64-pin header incorporates the 8-bit “PC bus”connector signals, while a 40-pin header incorporates additional
signals associated with the full 16-bit “PC/AT bus.” The signal names and functions for CONA1 are listed in the
table on the following page.
Note: The Pluto baseboard does not provide a means for supplying -5V or -12V DC power to the
PC/104-Plus ISA bus. Most PC/104 and PC/104-Plus modules do not require these voltages to
be supplied by the bus.

Pluto User Manual A4 www.diamondsystems.com Page 19
IOCHCHK-
A1
B1
GND
GND
C0
D0
GND
SD7
A2
B2
RESETDRV
SBHE-
C1
D1
MEMCS16--
SD6
A3
B3
+5V
LA23
C2
D2
IOCS16-
SD5
A4
B4
IRQ9
LA22
C3
D3
IRQ10
SD4
A5
B5
-5V (N/C)
LA21
C4
D4
IRQ11
SD3
A6
B6
DRQ2
LA20
C5
D5
IRQ12
SD2
A7
B7
-12V (N/C)
LA19
C6
D6
IRQ15
SD1
A8
B8
ENDXFR-
LA18
C7
D7
IRQ14
SD0
A9
B9
+12V
LA17
C8
D8
DACK0-
IOCHRDY
A10
B10
Key (no pin)
MEMR-
C9
D9
DRQ0
AEN
A11
B11
SMEMW-
MEMW-
C10
D10
DACK5-
SA19
A12
B12
SMEMR-
SD8
C11
D11
DRQ5
SA18
A13
B13
IOW-
SD9
C12
D12
DACK6-
SA17
A14
B14
IOR-
SD10
C13
D13
DRQ6
SA16
A15
B15
DACK3-
SD11
C14
D14
DACK7-
SA15
A16
B16
DRQ3
SD12
C15
D15
DRQ7
SA14
A17
B17
DACK1-
SD13
C16
D16
+5
SA13
A18
B18
DRQ1
SD14
C17
D17
MASTER-
SA12
A19
B19
REFRESH-
SD15
C18
D18
GND
SA11
A20
B20
SYSCLK
Key (no pin)
C19
D19
GND
SA10
A21
B21
IRQ7
SA9
A22
B22
IRQ6
SA8
A23
B23
IRQ5
SA7
A24
B24
IRQ4
SA6
A25
B25
IRQ3
SA5
A26
B26
DACK2-
SA4
A27
B27
TC
SA3
A28
B28
BALE
SA2
A29
B29
+5V
SA1
A30
B30
OSC
SA0
A31
B31
GND
GND
A32
B32
GND

Pluto User Manual A4 www.diamondsystems.com Page 20
4.1.2 PC/104-Plus PCI Bus (PC104+)
The Pluto baseboard’s PC/104-Plus PCI expansion bus signals are generated by the ETX CPU module, and are
essentially identical in function and signaling to a normal PC motherboard’s 32-bit PCI bus except for the physical
connector, a 120-pin header (PC104+) arranged as four 30-pin rows.
Note: The Pluto baseboard can supply +3.3V DC at up to 1A to the PC/104-Plus PCI bus.
GND/5.0
V KEY
A1
B1
Reserved
+5V
C1
D1
AD00
VI/O
A2
B2
AD02
AD01
C2
D2
+5V
AD05
A3
B3
GND
AD04
C3
D3
AD03
CMD/BE0
-
A4
B4
AD07
GND
C4
D4
AD06
GND
A5
B5
AD09
AD08
C5
D5
GND
AD11
A6
B6
VI/O
AD10
C6
D6
M66EN
AD14
A7
B7
AD13
GND
C7
D7
AD12
+3.3V
A8
B8
CMD/BE1-
AD15
C8
D8
+3.3V
SERR-
A9
B9
GND
SB0-
C9
D9
PAR
GND
A1
0
B1
0
PERR-
+3.3V
C1
0
D1
0
SDONE
STOP-
A1
1
B1
1
+3.3V
LOCK-
C1
1
D1
1
GND
+3.3V
A1
2
B1
2
TRDY-
GND
C1
2
D1
2
DEVSEL-
FRAME-
A1
3
B1
3
GND
IRDY-
C1
3
D1
3
+3.3V
GND
A1
4
B1
4
AD16
+3.3V
C1
4
D1
4
CMD/BE2-
AD18
A1
5
B1
5
+3.3V
AD17
C1
5
D1
5
GND
AD21
A1
6
B1
6
AD20
GND
C1
6
D1
6
AD19
+3.3V
A1
7
B1
7
AD23
AD22
C1
7
D1
7
+3.3V
IDSEL0
A1
8
B1
8
GND
IDSEL1
C1
8
D1
8
IDSEL2
AD24
A1
9
B1
9
CMD/BE3
VI/O
C1
9
D1
9
IDSEL3
GND
A2
0
B2
0
AD26
AD25
C2
0
D2
0
GND
AD29
A2
1
B2
1
+5V
AD28
C2
1
D2
1
AD27
+5V
A2
2
B2
2
AD30
GND
C2
2
D2
2
AD31
REQ0-
A2
3
B2
3
GND
REQ1-
C2
3
D2
3
VI/O
GND
A2
4
B2
4
REQ2-
+5V
C2
4
D2
4
GNT0-
GNT1-
A2
5
B2
5
VI/O
GNT2-
C2
5
D2
5
GND
+5V
A2
6
B2
6
CLK0
GND
C2
6
D2
6
CLK1
CLK2
A2
7
B2
7
+5V
CLK3
C2
7
D2
7
GND
GND
A2
8
B2
8
INTD-
+5V
C2
8
D2
8
RST-
+12V
A2
9
B2
9
INTA-
INTB-
C2
9
D2
9
INTC-
-12V
A3
0
B3
0
Reserved
Reserv
ed
C3
0
D3
0
GND/3.3V Key