Diamond Systems Athena II User manual

Athena II User Manual
High Integration SBC with Ethernet and Data Acquisition
User Manual v1.00
© Co yright 2008
Diamond Systems Cor oration
1255 Terra Bella Ave.
Mountain View, CA 94043
Tel [phone]
Fax [phone]
www.diamondsystems.com

Table of Contents
Introduction......................................................................................................................8
Descri tion and Features...........................................................................................8
Processor Section..................................................................................................8
I/O Section.............................................................................................................8
Analog In ut...........................................................................................................9
Analog Out ut........................................................................................................9
Digital I/O...............................................................................................................9
Counter/Timers......................................................................................................9
System Features....................................................................................................9
Block Diagram..........................................................................................................11
Functional Overview................................................................................................12
Processor.............................................................................................................12
Southbridge.........................................................................................................12
Memory................................................................................................................12
Video Features....................................................................................................12
Audio....................................................................................................................12
Ethernet...............................................................................................................12
Data Acquisition...................................................................................................13
Standard Peri herals...........................................................................................13
Bus Interfaces......................................................................................................13
Power Su ly.......................................................................................................14
Battery Backu ....................................................................................................14
Watchdog Timer..................................................................................................14
Board Descri tion.....................................................................................................15
Board Layout.......................................................................................................15
Connector Summary................................................................................................16
Jum er Summary.....................................................................................................16
Connectors.....................................................................................................................17
PC/104 ISA Bus (J1, J2)..........................................................................................17
Main I/O (J3)............................................................................................................17
Ethernet (J4)............................................................................................................21
USB (J5, J21)...........................................................................................................21
Watchdog Timer (J6)...............................................................................................22
USB0 (J7).................................................................................................................22
IDE (J8)....................................................................................................................23
External Battery (J9)................................................................................................24
In ut Power (J11).....................................................................................................25
External Auxiliary Power, Out ut (J12)....................................................................26
Data Acquisition, Digital I/O (J14)............................................................................27
S eaker (J15)...........................................................................................................28
Auto-Calibration Reference Voltage (J17)...............................................................29
LCD Panel, LVDS Interface (J24)............................................................................29
VGA (J25)................................................................................................................30
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CPU Fan (J27).........................................................................................................31
LCD Backlight (J28).................................................................................................31
CD In ut (J30)..........................................................................................................32
Board Configuration......................................................................................................34
System Configuration (J10).....................................................................................34
Serial Port and A/D IRQ Settings........................................................................35
Erasing CMOS RAM Settings..............................................................................36
ATX Power Control Settings................................................................................36
DAC Configuration (J13)..........................................................................................36
Single-ended/Differential In ut Settings..............................................................37
Uni olar/Bi olar In ut Settings............................................................................37
Analog Out ut Configuration Settings.................................................................37
RS-485 Mode Selection (J18)..................................................................................38
System Operation..........................................................................................................39
System Resources...................................................................................................39
Console Redirection to a Serial Port........................................................................39
Watchdog Timer.......................................................................................................40
Flash Memory..........................................................................................................41
Backu Battery.........................................................................................................41
System Reset...........................................................................................................41
On-Board Video.......................................................................................................42
BIOS................................................................................................................................43
BIOS Settings...........................................................................................................43
Serial Ports..........................................................................................................43
Parallel Port.........................................................................................................43
LCD Video Settings.............................................................................................43
Miscellaneous Settings........................................................................................43
BIOS Console Redirection Settings.........................................................................44
System I/O......................................................................................................................46
Ethernet....................................................................................................................46
Serial Ports...............................................................................................................46
PS/2 Ports................................................................................................................46
USB Ports................................................................................................................47
otes on Operating Systems and Booting Procedures............................................48
Windows O erating System Installation Issues.......................................................48
Driver Installation.................................................................................................48
BIOS Setting for Windows...................................................................................48
Com actFlash Under Windows...........................................................................48
DOS O erating Systems Installation Issues............................................................48
Com actFlash Com atibility Issues Under DOS.....................................................48
Data Acquisition Circuit................................................................................................50
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Data Acquisition Circuitry I/O Ma ...........................................................................51
Overview..............................................................................................................51
Register Ma Page Summary.............................................................................51
Register Ma Bit Summary..................................................................................52
Page 0 Register Definitions.....................................................................................54
Page 1 Register Definitions.....................................................................................66
Page 2 Register Definitions.....................................................................................69
Analog-to-Digital Input Ranges and Resolution.........................................................70
Overview..................................................................................................................70
In ut Range Selection..............................................................................................70
In ut Range Table....................................................................................................70
Performing an A/D Conversion....................................................................................71
Introduction..............................................................................................................71
Select the In ut Channel..........................................................................................71
Select the In ut Range............................................................................................71
Wait for Analog In ut Circuit to Settle......................................................................71
Perform an A/D Conversion on the Current Channel..............................................71
Wait for the Conversion to Finish.............................................................................72
Read the Data from the Board.................................................................................72
Convert the numerical data to a meaningful value..................................................73
Conversion Formula for Bi olar In ut Ranges....................................................73
Conversion Formula for Uni olar In ut Ranges..................................................74
A/D Scan, Interrupt and FIFO Operation.....................................................................75
Digital-to-Analog Output Ranges and Resolution......................................................77
Descri tion...............................................................................................................77
Resolution................................................................................................................77
Out ut Range Selection...........................................................................................77
D/A Conversion Formulas and Tables.....................................................................77
D/A Conversion Formulas for Uni olar Out ut Ranges......................................78
D/A Conversion Formulas for Bi olar Out ut Ranges........................................79
Generating an Analog Output.......................................................................................80
Com ute the D/A Code for the Desired Out ut Voltage..........................................80
Write the Value to the Selected Out ut Channel Registers....................................80
Wait for the D/A to U date.......................................................................................81
Analog Circuit Calibration............................................................................................82
A/D Bi olar Offset....................................................................................................82
A/D Uni olar Offset..................................................................................................82
A/D Full-scale...........................................................................................................82
D/A Full-scale...........................................................................................................82
Digital I/O Operation......................................................................................................83
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Counter/Timer Operation..............................................................................................84
Counter 0 – A/D Sam le Control.............................................................................84
Counter 1 – Counting/Totalizing Functions..............................................................84
Command Sequences.............................................................................................85
Load and Enable (Run) a Counter Sequence.....................................................85
Read a Counter Sequence..................................................................................85
Disabling the Counter Gate Command...............................................................86
Clearing a Counter Sequence.............................................................................86
Watchdog Timer Programming....................................................................................87
Watchdog Timer Register Details............................................................................87
Exam le: Watchdog Timer With Software Trigger.................................................88
Exam le: Watchdog Timer With Hardware Trigger................................................89
Data Acquisition Specifications (Data Acquisition units only).................................90
Analog In uts...........................................................................................................90
Analog Out uts........................................................................................................90
Digital I/O.................................................................................................................90
Counter/Timers........................................................................................................90
FlashDisk Module..........................................................................................................91
Installing the FlashDisk Module...............................................................................91
Configuration............................................................................................................91
Using the FlashDisk with Another IDE Drive...........................................................92
Power Su ly...........................................................................................................92
FlashDisk Programmer Board......................................................................................93
I/O Cables.......................................................................................................................94
Quick Start Guide...........................................................................................................95
General Setu ..........................................................................................................95
IDE Configuration.....................................................................................................95
Booting into MS-DOS, FreeDOS or ROM-DOS......................................................96
Booting into Linux or Microsoft Windows.................................................................96
Specifications.................................................................................................................97
CPU..........................................................................................................................97
Data Acquisition Circuitry.........................................................................................97
Power Su ly...........................................................................................................98
General....................................................................................................................98
Additional Information..................................................................................................99
Appendix A – BIOS CMOS Option Listing.................................................................100
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Viewing and Modifying the BIOS Settings.............................................................100
BIOS Screen Descri tions.....................................................................................101
Main...................................................................................................................101
Advanced...........................................................................................................105
Security..............................................................................................................110
Power.................................................................................................................111
Boot....................................................................................................................111
Technical Support........................................................................................................112
Figures
Figure 1: Athena II Block Diagram...................................................................................11
Figure 2: Athena II Board Layout.....................................................................................15
Figure 3: J3 Main I/O Connector......................................................................................18
Figure 4: J4 Ethernet Connector......................................................................................21
Figure 5: J5/J21 USB Connectors...................................................................................21
Figure 6: J6 Watchdog Timer Access Connector............................................................22
Figure 7: J7 USB0 Connector (end view)........................................................................23
Figure 8: J8 IDE Connector.............................................................................................23
Figure 9: J9 External Battery Connector (end view)........................................................24
Figure 10: J11 In ut Power Connector............................................................................25
Figure 11: J12 Auxiliary Power Out ut Connector (end-on view)...................................26
Figure 12: J14 Digital I/O Connector...............................................................................27
Figure 13: J15 S eaker Connector..................................................................................28
Figure 14: J24 LCD Panel Connector..............................................................................29
Figure 15: J25 VGA Connector........................................................................................30
Figure 16: J27 CPU Fan Connector................................................................................31
Figure 17: J28 LCD Backlight Connector (end view)......................................................32
Figure 18: J30 CD In ut Connector.................................................................................32
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Figure 19: J10 Jum er Block with Default Settings.........................................................34
Figure 20: IRQ Configuration O tions.............................................................................35
Figure 21: CMOS RAM Jum er Settings.........................................................................36
Figure 22: ATX Power Control Jum er Setting...............................................................36
Figure 23: J13 Jum er Block...........................................................................................36
Figure 24: A/D Single-ended/Differential Selection.........................................................37
Figure 25: A/D Uni olar/Bi olar Selection.......................................................................37
Figure 26: Analog Out ut Configuration Selection..........................................................38
Figure 27: J18 Jum er Block...........................................................................................38
Figure 28: Watchdog Timer Block Diagram.....................................................................40
Figure 29: Athena II Data Acquisition Block Diagram.....................................................50
Figure 30: FlashDisk Module...........................................................................................91
Figure 31: FlashDisk Programmer Board Layout............................................................93
Figure 32: Cable Kit C-ATH-KIT......................................................................................94
Diamond Systems Corporation Athena II User Manual Page

Introduction
Athena II is an embedded single-board computer (SBC) in a custom PC/104 small orm actor that integrates a
complete embedded PC and data acquisition circuitry into a single board.
The single board Athena computer is a Pentium III class device with onboard central processing, memory and
memory management devices and I/O management or speci ic unctions. The board is larger than the PC-104 PCB
ormat on three sides but uses the PC-104 mounting method and inter ace speci ication. The Athena II board
includes the ollowing additional eatures.
•Communicates externally over the ISA bus and I/O ports.
•Generates on-board RGB video or CRT display systems.
•Contains LVDS ormatting to drive a lat panel
•Is powered rom an externally regulated +5VDC supply.
Four models, shown in the ollowing table, provide various speed, memory size and data acquisition options.
Model Processor Speed RAM Size Data Acquisistion
ATHM500-256A 500 MHz 256MB Yes
ATHM500-256N 500 MHz 256MB No
ATHM800-256A 800 MHz 256MB Yes
ATHM800-256N 800 MHz 256MB No
The Athena II CPU uses the ISA bus, internally, to connect serial ports 1 through 4 and the data acquisition circuit to
the processor. The ISA bus is brought out to an expansion connector to mate with add-on boards. Diamond
Systems Corporation manu actures a wide variety o compatible PC/104 add-on boards or analog I/O, digital I/O,
counter/timer unctions, serial ports and power supplies.
Description and Features
The Athena II board includes the ollowing key system and data acquisition eatures.
Processor Section
•800MHz Mark CPU with integrated Northbridge, downclocked as needed to
reduce power consumption.
•256MB RAM, system memory.
•100MHz memory bus.
•512KB 16-bit wide integrated lash memory or BIOS and user programs.
•Advanced 2D/3D video graphics engine with integral MPEG-2 hardware
acceleration.
•33MHz PCI Bus.
I/O Section
•4 serial ports, 115.2kbaud max.
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•2 ports 16550-compatible.
•2 ports 16850-compatible with 128-byte FIFOs. These ports provide RS-232,
RS-422 and automatic RS-485 hal -duplex capability, and RS-422/RS-485
termination.
•4 USB 1.1 ports.
•IDE drive connectors; 44 pin notebook drive or solid-state lash disk
connection.
•10-/100 Base-T ull-duplex PCI bus mastering Ethernet.
•CRT and 24-bit dual channel LVDS lat panel support.
•Dual Independent Display.
•PS/2 keyboard and mouse ports.
•ATA and UDMA/33/66 IDE inter aces.
•System status LEDs.
•Inter ace or ampli ied audio and additional LEDs.
Analog Input
•16 single-ended/8 di erential inputs, 16-bit resolution.
•100KHz maximum aggregate A/D sampling rate.
•Programmable input ranges/gains with maximum range o ±10V / 0-10V.
•Both bipolar and unipolar input ranges.
•10 ppm/°C dri t accuracy.
•Internal and external A/D triggering.
•2KB-sample FIFO or reliable high-speed sampling and scan operation.
Analog Output
•4 analog outputs, 12-bit resolution.
•±10V and 0-10V output ranges available.
•±5V and 0-5V output range (optional).
Digital I/O
•24 programmable digital I/O lines, 3.3V and 5V logic compatible, -0.5V to +5.5V tolerant.
•Enhanced output current capability: -8/+12mA max.
Counter/Timers
•1 24-bit counter/timer or A/D sampling rate control.
•1 16-bit counter/timer or user counting and timing unctions.
•Programmable gate and count enable.
•Internal and external clocking capability.
System Features
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•Plug and play BIOS with IDE auto detection, 32-bit IDE access, and LBA
support.
•User-selectable COM1 or COM2 terminal mode.
•On-board lithium backup battery or real-time-clock and CMOS RAM.
•ATX power switching capability.
•Programmable watchdog timer.
•Power supply: 5VDC operation rom the PC/104 bus or a power connector.
•Extended temperature range operation: -40 to +85°C.
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Block Diagram
Figure 1 shows the Athena II unctional blocks.
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Figure 1: Athena II Block Diagram

Functional Overview
This section describes the major Athena II subsystems.
Processor
The board uses the VIA Mark integrated processor, with integrated Northbridge, up to the rated processor speed o
500/800MHz.
An appropriate heat sink is required, depending on the processor speed. The design supports a 5VDC an with
speed sensing. A connector is provided or this purpose.
Southbridge
The VIA VT82C686 provides the ISA bus, audio, UDMA33/66 IDE, our USB 1.1 ports, two RS-232 ports and a
PS/2 keyboard/mouse inter ace.
Memory
The 64-bit wide 256MB SDRAM operates at 100MHz or all con igurations. No expansion connector is provided
or additional memory.
The board also includes lash memory or BIOS and user program storage. Flash memory is accessible through the
on-board ISA bus.
Video Features
Video circuitry is provided by the VIA Mark chipset.
Audio
The design provides AC97 audio support derived rom the Southbridge chip. The Via VT1612A CODEC provides
audio processing.
Audio I/O includes,
•Stereo line in.
•Stereo line out.
•Mono mic in.
•Stereo internal line in.
The board includes audio power ampli ier circuitry or stereo speaker output. The ampli ier circuit is powered by
+5VDC rom the board. User DC control o volume is also provided, which overrides the so tware settings.
thernet
The board supports 10-/100- Base-T Ethernet. Magnetics are included on the board so that a complete circuit is
provided.
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Data Acquisition
The board provides the ollowing data acquisition capabilities.
T pe of I/O Characteristics
Analog Input •16 single-ended/8 di erential inputs,16-bit resolution.
•100KHz maximum aggregate A/D sampling rate.
•Programmable input ranges/gains:
+/-10V, +/-5V, +/-2.5V, +/-1.25V, 0-10V, 0-5V, 0-2.5V.
•A/D FIFO or reliable high-speed sampling and scan
operation.
Analog Output •Four analog outputs, 12-bit resolution.
•±10V and 0-10V output ranges.
•Inde inite short circuit protection on outputs.
Digital I/O •24 programmable digital I/O, 3.3V and 5V logic
compatible.
Counter/Timers •One 24-bit counter/timer or A/D sampling rate control.
•One 16-bit counter/timer or user counting and timing
unctions.
On board I2C lash EEROM is provided or auto-calibration value storage.
Standard Peripherals
The board provides the ollowing standard system peripherals.
Peripheral Characteristics
Serial ports Four serial ports
PS/2 ports Keyboard and mouse
USB ports Four USB 1.1 ports
IDE ports One 44-pin connector or HDD or compact lashdisk socket
Athena II contains our serial ports. Each port is capable o transmitting at speeds o up to 115.2Kbaud, and uses a
dedicated RS-232 transceiver with ESD protection.
Ports COM1 and COM2 are built into the standard chipset, consisting o standard 16550-type UARTs with 16-byte
FIFOs.
Ports COM3 and COM4 are derived rom a dual UART chip, which includes 128-byte FIFOs. These ports may be
operated at speeds up to 460Kbaud with the installation o high-speed drivers as a custom option. COM3 and
COM4 can also be BIOS-selected or RS-232 or RS-485. Termination resistors can be jumper-enabled on these two
ports.
Console redirection eature is incorporated. This eature enables keyboard input and character video output to be
routed to one o the serial ports.
The board contains provision or mounting a solid state IDE lash disk module with capacities ranging rom 32MB
and greater. The module mounts onto the board using a 44-pin 2mm pitch header and a hold-down mounting hole
with spacer and screws.
Bus Interfaces
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The PCI bus is generated by the VIA Mark processor module and is used internally or the Ethernet circuit. The
PCI bus is not brought out to a PCI-104 expansion connector.
The Southbridge also provides the ISA bus, which is extended to the PC/-104 inter ace, ,providing the ollowing
I/O.
•Dual UART or 2 serial ports.
•Data acquisition circuit, including a watchdog timer, analog and digital I/O, and two counter/timers
Power Supply
The power supply needs to supply an input voltage o +5VDC, ±5%, either rom the PC/104 bus or rom the on-
board connectors.
The power supply includes ATX power switching and ACPI power management support.
Note: The ATX power switch does not control the master +5V on the board
Battery Backup
Athena II contains a backup battery or the real-time clock and BIOS settings. The battery is directly soldered to the
board and provides a minimum 7 year backup li etime at 25oC.
The on-board battery may be bypassed with a jumper or replaced with an external battery connected to an external
battery connector.
Watchdog Timer
A watchdog timer (WDT) circuit consists o two cascaded programmable timers, which may be triggered in
hardware or so tware.
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Board Description
Board Layout
Figure 2 shows the Athena II board layout, including connectors, jumper blocks and mounting holes.
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Figure 2: Athena II Board Layout

Connector Summar
The ollowing table lists the connectors on the Athena II board.
Connector Description
J1 PC/104, ISA bus A,B
J2 PC/104, ISA bus C,D
J3 Main I/O (serial ports, PS/2 keyboard/mouse, parallel port, utility)
J4 Ethernet
J5 USB 0/1
J6 Watchdog/Failsa e Features
J7 USB0 (mini-USB connector)
J8 Primary IDE (44-pin, laptop)
J9 External Battery
J11 Input Power
J12 External Auxiliary Power (output)
J14 Data Acquisition I/O
J15 Audio I/O
J17 Auto-calibration Re erence Voltage
J21 USB 2/3
J24 LVDS LCD
J25 VGA
J27 CPU Fan
J28 LCD Backlight Power
J30 CD Input
Jumper Summar
The ollowing table lists the jumpers on the Athena II board.
Jumper Description
J10 System con iguration (CPU eatures)
J13 Data acquisition circuit con iguration
J18 RS-485 Mode Selection, COM 3/4
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Connectors
This section describes the on-board Athena II connectors.
Note: All cables mentioned in this chapter are included in Diamond Systems’ cable kit C-ATH-KIT
Some cables are also available individually
PC/104 ISA Bus (J1, J2)
Connectors J1 and J2 carry the ISA bus signals. The ollowing diagram shows the PC/104 A and B pin layout or J1
and the C and D pin layout or J2.
J1 J2
IOCHCHK- A1 B1 Ground Ground C0 D0 Ground
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 LA21 C4 D4 IRQ11
SD3 A6 B6 DRQ2 LA20 C5 D5 IRQ12
SD2 A7 B7 -12V LA19 C6 D6 IRQ15
SD1 A8 B8 ENDXFR- LA18 C7 D7 IRQ14
SD0 A9 B9 +12V LA17 C8 D8 DACK0-
IOCHRDY A10 B10 Key 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 Ground
SA11 A20 B20 SYSCLK Key C19 D19 Ground
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 Ground
Ground A32 B32 Ground
Main I/O (J3)
An 80-pin high-density connector, J3, is provided or access to the user I/O. The ollowing unctions are supported
by this connector.
•Two serial ports
•Parallel port
•Watchdog timer I/O
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•PS/2 keyboard
•PS/2 mouse
•IrDA port
•ATX Power switch
•Reset switch
•Power and HDD LEDs
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Figure 3: J3 Main I/O Connector

Cable A Cable B
COM1 DCD1 1 1 STB- LPT1
DSR1 2 2 AFD-
RXD1 3 3 PD0
RTS1 4 4 ERR-
TXD1 5 5 PD1
CTS1 6 6 INIT-
DTR1 7 7 PD2
RI1 8 8 SLIN-
GND 9 9 PD3
COM2 DCD2 10 10 GND
DSR2 11 11 PD4
RXD2 12 12 GND
RTS2 13 13 PD5
TXD2 14 14 GND
CTS2 15 15 PD6
DTR2 16 16 GND
RI2 17 17 PD7
GND 18 18 GND
COM3 DCD3 19 19 ACK-
DSR3 20 20 GND
RXD3 21 21 BUSY
RTS3 22 22 GND
TXD3 23 23 PE
CTS3 24 24 GND
DTR3 25 25 SLCT
RI3 26 26 KB Clk KYBD
GND 27 27 KB/MS V-
COM4 DCD4 28 28 KB Data
DSR4 29 29 KB/MS V+
RXD4 30 30 MS Clk Mouse
RTS4 31 31 KB/MS V-
TXD4 32 32 MS Data
CTS4 33 33 KB/MS V+
DTR4 34 34 GND Utilities B
RI4 35 35 Reset-
GND 36 36 ATX Power
Utilities A +5V Out 37 37 KB Lock
S eaker Out 38 38 IR RX
IDE Drive LED 39 39 IR TX
Power LED 40 40 +3VSB
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Signal Group Signal Description
COM1-COM4 - The signals on these pins are RS-232 level signals and
may be connected directly to RS-232 devices. The
pinout o these signals is designed to allow a 9-pin male
IDC connector to be crimped onto the corresponding
ribbon cable wires to provide the correct pinout or a
PC serial port connector (DTE).
LPT1 - The signals on these pins comprise a standard PC
parallel port. The pinout o these signals is designed to
allow a 25-pin emale IDC connector to be crimped
onto the corresponding ribbon cable wires to provide
the correct pinout or a PC parallel port connector.
KYBD, Mouse - PS/2 signals or keyboard and mouse. (Pins 2 and 6 on
the Mini-Din-6 PS/2 connectors are unused).
KB Clk Clock pin; connects to pin 5 o the PS/2 connector.
KB/MS V- Power pin; connects to pin 3 o the PS/2 connector.
KB Data Data pin; connects to pin 1 o the PS/2 connector.
KB/MS V+ Power pin; connects to pin 4 o the PS/2 connector.
Utilities A +5V Out Switched power pin that is turned on and o with the
ATX power switch or with the +5V input.
Speaker Out Re erenced to +5V Out. Connect a speaker between
this pin and +5V Out.
IDE Drive LED Re erenced to +5V Out. Does not require a series
resistor. Connect LED directly between this pin and
+5V Out.
Power LED Re erenced to +5V Out. Does not require a series
resistor. Connect LED directly between this pin and
+5V Out.
Utilities B Reset- Connection between this pin and Ground will generate a
Reset condition.
ATX Power When ATX is enabled, a momentary contact between
this pin and ground causes the CPU to turn on, and a
contact o 4 seconds or longer will generate a power
shutdown. ATX power control is enabled with a jumper
on jumper block J10.
KB Lock When this pin is connected to Ground, the keyboard and
mouse inputs are ignored.
IR RX, IR TX IrDA pins. Can be connected directly to an IrDA
transceiver.
+3VSB Connected to +5V input power on J11. This pin is not
switched by ATX control. This pin is provided or
auxiliary use such as ront panel lighting or other
circuitry at the user’s discretion.
Connector J3 mates with Diamond Systems Corporation cable no. C-PRZ-01, which consists o a dual-ribbon-cable
assembly with industry-standard connectors at the user end. The CPU mating connector includes integral latches or
enhanced reliability. Each ribbon cable has 40 wires.
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