VMEbus Pentium-M Single Board Computer


  • Available in either the Ultra Low Voltage 1.0 GHz @ 5W version, Low Voltage at 1.4 GHz @ 10W, or 1.8 GHz at 11 W
  • 400 MT/sec System Bus
  • VITA 31,1 compliant
  • Convection cooled and rugged conduction-cooled versions
  • Support for Windows, VxWorks, Linux, QNX and Solaris
  • -40°/+85° Versions available

The DPM is a VMEbus (and VME64) compatible platform based on the Intel® low-power Pentium® M (Dothan) processor. The DPM takes advantage of the Pentium M's low-power consumption as a rugged Single Board Computer (SBC) and it is optionally available as an IEEE 1101.2-compliant, conduction-cooled VMEbus module with wedge locks and a full-board heat sink for high shock/vibration environments and temperature extremes.

The 855GME Graphics Memory Controller Hub (GMCH) and 6300ESB I/O Controller Hub (ICH) chipset supports PCI-X expansion, integrated VGA/DVO interface, USB 2.0, ATA/100, and Serial ATA (SATA). A DVI-I connector, two USB 2.0 ports, a 10/100BaseTX interface, and a COM port are all accessible from the front panel. On-board CompactFlash permits single-slot booting. Two VITA 31.1-compliant, 10/100/1000BaseTX ports are routed to the backplane. Conventional PC I/O is accessible with industry-standard connectors on optional rear I/O modules, as well as, SATA, VGA/DVO video, Gb Ethernet, and two more USB 2.0 ports. One PMC-X site is provided for additional I/O expansion.

Additional Photos

DPM Block Diagram


TBR Transition Board for DPM

DPM with 3 PMC Carrier shown above

Three slot configuration with all front panel I/O

Technical Specifications
Processor Intel® Pentium® M Processor:
· 2 MB of L2 Advanced Transfer Cache
· Available in Ultra Low Voltage 1.0 GHz @ 5 W; Low Voltage at 1.4 GHz @ 10 W; or 1.8 GHz @ 21 W
Single-slot Operation Single-slot VMEbus operation with an on-board compactFlash disk for bootable mass storage
855GME and 6300ESB Chipset

400 MT/sec System Bus
Ultra ATA 100/66/33 IDE protocol
PCI-X expansion offers 64 bits @ 66 MHz data transfer capability
Integrated Graphics
Chipset includes DRAM controller, USB 2.0 interface, two Serial ATA/150 ports, RTC, NV-RAM, standard PC timers, Ultra DMA, and interrupt logic


DDR-266 support with a memory bandwidth of 2.1 GB/s
Stuffing options for 256MByte, 512MByte or 1GByte
Supports ECC

VMEbus Tundra Universe IID PCI-VMEbus interface provides 64- bit VMEbus transfer rates over 30 MB/sec
Full range of software drivers is available for different operating systems
Full Slot 1 (system controller) functions provided
Lower cost versions available without VMEbus
PMC Expansion One PMC-X site with 64 bit @ 66 MHz bandwidth is available on-board
PMC-P4 is routed in accordance with VITA-35 P4V2- 46dz (PMC-P4 to VME64x-P2-Rows-D,Z)
Ethernet An Intel 82546 Ethernet controller supports two 10/100/1000BaseTX Ethernet ports routed to the P0 connector in compliance with Vita 31.1 for backplane fabric switching or for alternate routing to an optional rear I/O card
An 82559 provides one 10/100BaseTX port that is accessible from the front panel

DVI-I connector integrates one digital and one analog output
Analog video output supports VGA to UXGA resolutions
Digital video output (DVO) port with up to 165 MHz dot clock, 12-bit interface with attached Silicon Image PaneLink transmitter
Supports a 5 meter cable
Compliant with DVI Specification 1.0
Optional VGA and DVO routing to P0 for rugged versions

IDE Primary ATA/100 DMA IDE interface is accessible from the VMEbus P2 connector
PIO and bus master support
Secondary IDE port is routed to a Type II-compatible CompactFlash connector for on-board booting
BIOS General Software's flash-based system BIOS with a variety of boot options, including CD-ROM and PXE over Ethernet
Customized versions available upon request
Watchdog Programmable watchdog timer for system recovery
I/O interfaces accessible from the front panel VGA/DVO, Dual USB, 10/100BaseTX port, and COM1
Special versions (using TBQ transition board) can provide front panel interface for dual 10/100/1000 BaseT, COM 3, dual USB 2.o, and PS/2 kybd and mouse (requires additional slot)
XPMPTB Rear I/O Transition Board

IDE routed through P2 in all configurations

LPC version has on-board super I/O chip which produces standard PC I/O including two RS-232/422/485 ports, floppy disk controller, Mouse/Keyboard interface, and LPT1 header

Non-LPC version, COM2 (RS-232 only) and two distinct USB 2.0 ports are routed through P2 to rear I/O card
Non-LPC I/O is also accessible without XPMPTB

P0 version, two Serial ATA ports, two 0/100/1000BaseTX ports, and (routed through P0)
VGA/DVO routed to P0 in conduction-cooled versions without front panel I/O
P0 I/O can also be accessed without XPMPTB

Three PMC Carrier Two slot configuration available with XPMPMC3
TBR Transition Board TBR transition board requires a single-slot and supports IDE hard drive and either floppy drive or CD-ROM drive
P2 -> P2 cabling from DPM routes LPC (for Super I/O device) and IDE to transition board, does not need to be in adjacent slot
Super I/O device supports floppy drive, PS/2 keyboard/mouse interface and two COM ports
Front panel connectors include PS/2 keyboard/mouseconnector and two DB-9 connectors for RS-232/422/485
Front panel access for floppy or CD-ROM drive
Power Consumption 5 VDC only required
With 1.4 GHz Pentium M 3.5 A @ 5 VDC typical
Net Weight

18.4 oz. with 1 GB DRAM, no CompactFlash, with P0, heatsink and front panel

17.94 oz. as above with no P0 connector

Operating Temperature Range

0°/+71° C
Special versions tested to -40°/+85°C (available for 1.0 GHz or 1.4 GHz Pentium M)

Rugged Versions Available (RPM) Wedge locks and conduction-cooled in compliance with IEEE 1101.2
Expanded temperature range and high shock & vibration operating characteristics

Pentium M
The Intel® Pentium® M processor was designed from the ground up with a new microarchitecture that delivers high performance with low power consumption. With its 90 nm processing technology and 2 MB of L2 advanced transfer cache, the Pentium M offers more performance per Watt. Second-generation Streaming SIMD Extensions (Streaming SIMD Extensions 2) capability adds 144 new instructions, including 128-bit SIMD integer arithmetic and 128-bit SIMD double-precision floating-point operation. The Pentium. The Pentium M also offers a dedicated hardware stack manager that employs sophisticated hardware control for improved stack management, advanced branch prediction capability, and a 400 MHz front side bus to the memory controller hub.
Chipset and 6300ESB ICH C
The Intel® 855GME Graphics Memory Controller Hub (GMCH) and Intel® 6300ESB I/O Controller Hub (ICH) chipset create an optimized integrated graphics solution with a 400 MHz system bus and integrated 32-bit 3D core at 133 MHz.
DRAM Controller
The 855GME (GMCH) provides a 266 MHz interface to DDR RAM (72 bits wide with ECC). The RPM can be populated with one or two banks of DRAM for 512 MB or 1 GB of total memory respectively. The GMCH system memory architecture is optimized to maintain open pages (up to 16-kB page size) across multiple rows. As a result, up to 16 pages across four rows is supported. To complement this, the GMCH will tend to keep pages open within rows, or will only close a single bank on a page miss.
Graphics Processor
The 855GME also has an advanced integrated graphical display controller. The RPM routes the two available DVO ports; one is accessible from the front panel while the other is brought out through the P0 connector to the system backplane. The DVO ports:
· Provide high-speed, 12-bit interfaces with 165 MHz dot clocks
· Supports DVO devices (TV-Out Encoders, TMDS & LVDS transmitters, etc.) with pixel resolutions up to 1600 x 1200 @ 85 Hz and up to 1048 x 1536 @ 72 Hz
· The two ports can be combined for one 24-bit, 330 MHz interface
· Compliant with DVI Specification 1.0
The 6300ESB I/O Controller Hub (ICH) provides most of the RPM's on-board I/O and it's the RPM's PCI-X expansion bridge. The ICH is designed as a low-power, high-performance I/O hub that features:
· 64-bit @ 66 MHz PCI-X expansion that is used on the RPM for the on-board PMC-X slot, the three Ethernet ports available on the RPM, and for the Universe IID PCI/VMEbus bridge
· Four USB 2.0 compliant ports: two of which are routed to the front panel while the other two may optionally be routed to the P2 connector to the backplane (if the LPC interface (also provided by the IHC) is not routed to the Super I/O device on the RPMPTB rear I/O module)
· Integrated IDE controller supports Ultra 100 DMA Mode Transfers up to 100 MB/sec read cycles and 88.88 MB/sec write cycles for a CompactFlash drive on-board and a primary IDE port that is routed through P2 to the RPMPTB
· Two Serial ATA ports providing 150 MB/sec data rates are routed through P0
· Standard PC functionality like a battery-backed RTC and 256-bytes of CMOS RAM, Power Management Logic, Interrupt Controller, Watchdog Timer, AC'97 CODEC, Integrated 16550 compatible UART's, and multimedia timers based on the 82C54
Intel 82546EB Dual Gigabit Ethernet Controller
The DPM supports two 10/100/1000BaseTX channels that are routed to the P0 connector in compliance with the Vita 31.1 Specification for backplane fabric switching. The Intel 82546EB Dual Port Gigabit Ethernet Controller incorporates two full Gigabit Ethernet MAC and PHY layer functions on a single, compact component. Routed from the ICH, the front side data path to the dual Ethernet port controller is 64 bits at 66 MHz. The Intel 82546EB offers the following features: 10, 100, and 1000BaseTX support with auto-negotiation; Dual 64KB configurable RX and TX packet FIFOs; 128-bit internal data path architecture for low latency data handling and superior DMA transfer rate performance; Built-in Phyceiver.
Intel 82559 Fast Ethernet Controller
The RPM The Intel 82559 offers the following features: 10BaseT and 100BaseTX support with auto-negotiation; Independent 3 KB receive and transmit FIFOs; Powerful on-chip DMA minimizes CPU overhead with zero wait-state burst transfers to system memory; Built-in Phyceiver.
Tundra Universe IID CA91C142D PCI-VMEbus Interface
The PCI-VMEbus interface, based on the Tundra Universe IID CA91C142D, offers the following features:
· High-performance 64-bit VMEbus interface
· Integral FIFOs for write-posting allow the Universe IID to quickly relinquish the bus
· Programmable DMA controller with linked list support
· Full VMEbus system controller functionality
· Complete VMEbus address and data transfer modes: A32/A24/A16 master and slave; D64 (MBLT)/D32/D16/D08 master and slave
DPM I/O Routing
I/O Front Panel Through P0 P2 w/o LPC P2 with LPC
DVI-I Graphics* 1+ 1+    
Serial ATA   2    
AC'97 CODEC   1    
10/100BaseT 1      
Gb Ethernet   2 (VITA 31.1)    
RS-232 COM 1 Port 1      
RS-232 COM 2 Port     1  
RS-232/422/485 COM 3/4 Port       2**
USB 2.0 2   2  
Floppy Disk Controller       1**
PS/2 Mouse/Kybd       1**
LPT1 Parallel Port       1**
IDE Interface     1 1

* DVI graphics can be routed either to front panel or P0, but not both.
** Requires XPMPTB with super I/O device installed and LPC version of DPM
XPMPTB provides industry standard connectors for I/O routed to P2 and P0. I/O can also be accessed directly from P0 and P2 except for I/O generated by Super I/O located on XPMPTB
Special routing available (for TBQ) with LPC and USB 3 routed to P0 instead of P2

Ordering Information
Part# Description
DPMxQPxL VME64 single-slot CPU board with 1.4 GHz Pentium-M. 1 GB DDR-267 DRAM. With DVI-I/VGA, dual USB 2.0, 10/100BaseT, COM1on front panel. PCI-X compatible PMC site with front and rear access. Support for up to 4 GB bootable CompactFlash. With no P0 connector. LPC routed to P2 (for versions using XPMPTB or XPMPTBP)
xPMQxxxx 256 MB Flash for DPM
xPMRxxxx 512 MB Flash for DPM
xPMSxxxx 1 GB Flash for DPM

2 GB Flash for DPM

xPMUxxxx 4 GB Flash for DPM
XPMxx8xx Ultra low power 1.0 GHz Celeron M
XPMxxQxx Upgrade to 1.8 GHz Pentium M
xPMxxxPx P0 with dual 10/100/1000BaseT and dual SATA routed to backplane. VITA 31.1 compliant
xPMxxxGx P0 with dual 10/100/1000BaseT dual SATA and DVI graphics routed to backplane(instead of frontpanel). VITA 31.1 compliant
xPMxxxXx No P0 connector
xPMxxxxX No LPC routed to P2 (instead COM2, 2x USB 2.0 and IDE routed to P2 directly with no XPMPTB or XPMPTBP)
XPMxxxxx-ER Temperature testing to extended temperature of -40°/+85°C
CONCOAT-XPM Conformal coating
XPMPTBxy Rear transition board for DPM/RPM. Supports IDE plus options below:
  x = P Supports P0 I/O including dual GbE, dual SATA.
  x = G Supports P0 I/O including dual GbE, dual SATA. Supports DVI interface for RPM and DPM if not routed to front panel
  x = x No P0 support
  y = L LPC support with Super I/O and connectors
for has DB-9s for COM3 and COM4
(RS-232/422/485), PS/2 keyboard/mouse, LPT1 header, floppy interface on a header
  y = y No LPC, two USB 2.0 and COM2 (RS-232)
TBRtuu Transition board for DPM. Includes Super I/O device which provides 2 COM ports (RS232/422/485 via two front panel DB-9 connectors), PS/2 kybd/mouse, floppy disk interface. IDE routed from DPM supports on-board hard drive and CD-ROM drive. Interface to DPM via P2 -> P2 cabling for LPC and IDE interconnect. TBR is single-slot board only and does not need to be in adjacent slot to DPM.
TBQ Transition board for DPM with front panel access for: PS/2 keyboard/mouse, one COM port for RS-232/422/485, two 10/100/1000BaseT, one audio Codec, SATA. Can also accommodate two on-board 2.5" SATA drives
Transition board options:
  t = F 1.44 MB floppy drive installed on transition board
  t = C CD-ROM drive in place of floppy drive (cannot be used with SCSI)
  t = t Neither floppy drive nor CD-ROM drive
  uu = 40 40 GB IDE hard disk drive installed on transition board
  uu = uu No IDE hard drive installed on transition board
DSW-500- DPM VxWorks BSP (one time charge)
DSW-700-DPM DriveVME, a high-performance VME-to-Windows/NT Systems Software Link (Development version)
DSW-700XP-DPM DriveVME for Windows XP
DSW-7002K-DPM DriveVME for Windows 2000
DSW-B00-DPM BSP for Linux (Redhat Linux or other distributions upon request)
DSW-RTX-DPM RTX driver for VMEbus (Tundra Universe 2)

Special configurations can be quoted with alternate routing of graphics to P0, COM2 and USB routed to P2. Ultra low power processors can also be quoted separately.

Special configuration can be quoted with 512 MB DDR-267 or without VMEbus interface. These special versions may require minimum quantity purchases.

back to top