Diamond Systems Poseidon Manuale utente
Poseidon User Manual
EPIC format VIA CPU Board with Integrated Data Acquisition
7463010 v1 2
© Copyright 2007
1255 Terra Bella Ave
Mountain View, CA 94043
Tel (650) 810-2500
Fax (650) 810-2525
www diamondsystems com
Diamond Systems Corporation Poseidon User Manual Page 1
Table of Contents
Introduction......................................................................................................................7
Description and Features 7
Block Diagram 9
Functional Overview 10
Board Description 13
Connector Summary 14
Jumper Summary 14
Connectors.....................................................................................................................15
PC/104 ISA Bus 15
PC/104-Plus PCI Bus 16
PS2 Mouse and Keyboard connector 17
Utility Connector 17
Data Acquisition (Digital I/O) Connector 19
Data Acquisition (Analog I/O) Connector 20
Ethernet Connector 21
Audio I/O Connector 21
Speaker Connector 22
External Auxiliary Power Connector (Output) 23
IDE Connector 24
Serial Port I/O Connector 25
External Battery Connector 27
LCD Panel (LVDS Interface) Connector 28
VGA Connector 29
LCD Backlight Connector 30
Power Input Connector 30
USB 2 0 Connectors 31
Serial ATA Connector 32
I/O Panel Power 33
Standard JTAG Configuration Interface (Factory Use) 34
Reference Voltage Test Point (Factory Use) 34
Board Configuration......................................................................................................35
Power Configuration Options 35
PCI VI/O Voltage Setting (JP1) 35
DAQ Configuration (JP2) 37
COM3/COM4/ADC IRQ Configuration (JP3) 38
Analog I/O Single-ended/Differential Configuration (JP4) 39
DAC Configuration (JP5) 40
Battery Connection (JP6) 41
ATX Power Control (JP7) 42
RS-422/RS-485 Termination Configuration (JP8) 43
DIO Pull-up/Pull-down Configuration (JP9) 43
Diamond Systems Corporation Poseidon User Manual Page 2
System Features............................................................................................................44
System Resources 44
Console Redirection to a Serial Port 44
Flash Memory 45
Backup Battery 45
System Reset 46
On-Board Video 46
System I/O......................................................................................................................47
Ethernet 47
Serial Ports 47
PS/2 Ports 48
USB Ports 48
Data Ac uisition Circuit................................................................................................50
Data Acquisition Circuitry I/O Map 51
I/O Register Summary 53
I/O Register Definitions 55
Enabling Enhanced Features.......................................................................................76
Enhanced Mode 76
Normal Mode 76
Analog-to-Digital Input Ranges and Resolution.........................................................77
Overview 77
Unipolar and Bipolar Inputs 77
Input Ranges and Resolutions 77
A/D Conversion Formulas 78
Performing an A/D Conversion....................................................................................80
Select the Input Channel 80
Select the Input Range 81
Wait for Analog Input Circuit to Settle 81
Perform an A/D Conversion on the Current Channel 81
Wait for the Conversion to Finish 81
Read the Data from the Board 81
Convert the numerical data to a meaningful value 82
A/D Sampling Methods..................................................................................................83
Sampling Modes 83
FIFO Description 84
Scan Sampling 84
Sequential Sampling 84
How To Perform Conversions Using Interrupts.........................................................85
Diamond Systems Corporation Poseidon User Manual Page 3
Analog Output Ranges and Resolution.......................................................................86
Description 86
Resolution 86
Full-scale Range Selection 86
Digital-to-Analog Conversion.......................................................................................87
Compute the D/A Output Value for the Desired Output Voltage 87
Compute the LSB and MSB Values 87
Add the Channel Number to the MSB 88
Set D/A Simultaneous Update Bit 88
Write the LSB and MSB to the Board 88
Monitor the DACBUSY Status Bit 88
Waveform Generator.....................................................................................................90
Description 90
Programming the D/A Waveform Generator 90
Auto-calibration.............................................................................................................92
Background 92
Performing Auto-calibration with Software 93
Performing Auto-calibration with dsPIC 93
Digital I/O Operation......................................................................................................94
Main Digital I/O Internal 82C55 Circuit 94
Auxiliary Digital I/O 95
Counter/Timer Operation..............................................................................................97
Counter/Timer Features and Configuration Options 97
Counter/Timer Configuration 97
Counter/Timer Access and Programming 97
Watchdog Timer Programming....................................................................................98
FlashDisk Module........................................................................................................100
Installing the FlashDisk Module 100
Using the FlashDisk with Another IDE Drive 101
Power Supply 101
FlashDisk Programmer Board....................................................................................102
I/O Cables.....................................................................................................................103
Mounting PC/104-Plus Cards onto a Poseidon Baseboard.................................... 104
Customization Options...............................................................................................105
Diamond Systems Corporation Poseidon User Manual Page 4
PNL-PSD Panel I/O Board for Poseidon CPU...........................................................106
Specifications..............................................................................................................115
CPU 115
Data Acquisition Circuitry 115
Power Supply 116
General 116
Additional Information................................................................................................117
Appendix A. COM3/4/ADC IRQ Configuration for First Release Boards, Rev A1
.......................................................................................................................................118
Technical Support........................................................................................................119
Figures
Figure 1: Poseidon Functional Block Diagram 9
Figure 2: Poseidon Board Layout 13
Figure 3: CN6 and CN7 Connectors 15
Figure 4: CN3 Connector 16
Figure 5: CN10 Connector 23
Figure 6: CN8 Connector 27
Figure 7: LCD Panel Connector 28
Figure 8: CN4 Connector 30
Figure 9: CN9 Connector 30
Figure 10: Serial ATA Connector 32
Figure 11: Jumper Block JP1 35
Figure 12: JP1 Settings 36
Figure 13: Base Address Configuration Example 37
Figure 14: DMA Channel Selection 37
Figure 15: Bus Width Configuration 38
Figure 16: IRQ Selection Example 39
Diamond Systems Corporation Poseidon User Manual Page 5
Figure 17: Analog I/O Single-ended/Differential Configuration Example 40
Figure 18: JP5 Jumper Block 40
Figure 19: D/A Configuration for ±5V Output Range Example 41
Figure 20: D/A Configuration to Reset to Zero Scale Example 41
Figure 21: JP6 Jumper 41
Figure 22: ATX Configuration Using JP7 42
Figure 23: RS-422/RS-485 Termination Configuration Options 43
Figure 24: DIO Pull-up/Pull-down Configuration 43
Figure 25: Data Acquisition Block Diagram 50
Figure 26: FlashDisk Module 100
Figure 27: FlashDisk Programmer Board Layout 102
Diamond Systems Corporation Poseidon User Manual Page 6
Introduction
Poseidon is an embedded single board computer (SBC) in an EPIC form factor that integrates CPU and data acquisition
circuitry into a single board.
Poseidon conforms to the EPIC standard with expansion support via PC/ 04-Plus, an embedded standard that is
based on the ISA and PCI buses and provides a compact, rugged mechanical design for embedded systems. PC/ 04
modules feature a pin and socket connection system in place of card edge connectors, as well as mounting holes for
stand-offs in each corner. The result is an extremely rugged computer system fit for mobile and miniature
applications. PC/ 04 modules stack together with 0.6” spacing between boards (0.662” pitch including the
thickness of the PCB).
Poseidon uses the PCI bus internally to connect the Ethernet circuit to the processor. It uses the ISA bus internally
to connect serial ports 3 and 4, as well as the data acquisition circuit, to the processor. Both the ISA and PCI buses
are brought out to expansion connectors for the connection of add-on boards. Diamond Systems manufactures a
wide variety of compatible PC/ 04 add-on boards for analog I/O, digital I/O, counter/timer functions, serial ports,
and power supplies.
Description and Features
The Poseidon board is an all-in-one embedded SBC with the following key system and data acquisition features.
Processor Section
•Low-power, fanless .0GHz VIA Eden ULV CPU or high-performance 2.0GHz VIA C7 CPU.
•512MB or 1GB 533MHz DDR2 RAM soldered, on-board, system memory.
•400MHz front side bus.
•2MB 6-bit wide integrated flash memory for BIOS and user programs.
•Advanced 2D/3D graphics engine with integral MPEG-2 hardware acceleration.
•33MHz PCI Bus.
I/O Section
•4 serial ports, 5.2kbaud max.
•2 ports 6550-compatible
•2 ports 6850-compatible with 28-byte FIFOs and RS-232, RS-422 and RS-485 capability, with RS-
422/485 termination.
•4 USB 2.0 ports.
•Accepts solid-state IDE FlashDisk modules directly on board.
•0-/ 00-/ 000BaseT Gigabit Ethernet.
•CRT and 24-bit dual channel LVDS flat panel support.
•Dual Independent Display.
•PS/2 keyboard and mouse ports.
•S-ATA and UDMA- 00 IDE interfaces.
•Interface for amplified audio.
Analog Input
•32 single-ended/ 6 differential inputs, 6-bit resolution.
•250KHz maximum aggregate A/D sampling rate.
•Bipolar input ranges: ± 0V, ±5V, ±2.5V, ± .25V, ±0.625V.
•Unipolar input ranges: 0- 0V, 0-5V, 0-2.5V, 0- .25V, 0-.625V.
•5 ppm/°C drift accuracy.
•Internal and external A/D triggering.
•024-sample FIFO for reliable high-speed sampling and scan operation.
Diamond Systems Corporation Poseidon User Manual Page 7
Analog Output
•4 analog outputs, 2-bit resolution.
•±5V, ± 0V, 0-5V, 0- 0V output ranges available.
•Simultaneous update.
•Adjustable output range (optional).
Digital I/O
•24 programmable digital I/O lines, 3.3V and 5V logic compatible.
•Enhanced output current capability: +64/- 5mA max.
•Selectable pull-up/down resistors on board.
Counter/Timers
• 24-bit counter/timer for A/D sampling rate control.
• 6-bit counter/timer for user counting and timing functions.
•Programmable gate and count enable.
•Internal and external clocking capability.
System Features
•Plug and play BIOS with IDE auto detection, 32-bit IDE access, and LBA support.
•User-selectable COM or COM2 terminal mode.
•On-board lithium backup battery for real-time-clock and CMOS RAM.
•ATX power switching capability.
•Programmable watchdog timer.
•I/O panel board that connects to on-board I/O brought to pin headers, to provide PC-style connectors.
•Power supply: 5VDC operation from the PC- 04 bus.
Diamond Systems Corporation Poseidon User Manual Page 8
Block Diagram
Figure shows the Poseidon functional blocks.
Diamond Systems Corporation Poseidon User Manual Page
Figure : Poseidon Functional Block Diagram
Functional Overview
This section describes the major Poseidon subsystems.
Processor
Two processor options are available for the Poseidon board.
•Low-power, fanless .0GHz VIA Eden ULV CPU
•High-performance 2.0GHz VIA C7 CPU
North Bridge and South Bridge
The North and South bridge are integrated in the on-board VIA CX700 chip.
Memory
The board accommodates 5 2MB or 1GB of SDRAM system memory soldered on the board. No expansion connector
is provided for additional memory.
The board also includes flash memory for storage of BIOS and user programs. Flash memory is accessible via the
on-board ISA bus.
ideo Features
Video circuitry is provided by the VIA CX700 chipset and includes,
•Dual 200MHz 2D/3D graphics engines featuring dedicated 28-bit data paths for pixel data flow and
texture/command access.
•An integrated MPEG-2 decoder.
•Dual independent display with separate frame buffers for CRT and flat panel displays.
Audio
The design provides AC97 audio support derived from the South Bridge chip. The Via VT 6 2A CODEC provides
audio processing. Give special attention to design and routing to minimize noise on the audio I/O lines.
Audio I/O includes,
•Stereo line in.
•Stereo line out.
•Mono mic in.
•Stereo internal line in.
The board includes audio power amplifier circuitry for stereo speaker output. The amplifier circuit is powered by
+5VDC from the board. User DC control of volume is also provided, which overrides the software settings.
Ethernet
The board supports 0-/ 00-/ 000BaseT (Gigabit) Ethernet. Magnetics are included on the board so that a complete
circuit is provided.
Diamond Systems Corporation Poseidon User Manual Page 10
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