Processor If you select the standard environmental range, and do not require low power, the processor will be configured to run at it's designed frequency. If you select low power or extended temperature options, the processor will be down-clocked to meet your requirements. Also note that processor options may be limited by other board options (for instance, only the 266MHz CPU is available if you choose the "-55C to +125C" environmental range. This is because the 266MHz CPU is more efficient than the 166MHz CPU. Note that this does not mean the CPU will be running at 266MHz - the processor rate and system buss speeds will be tailored to meet your other requirements, such as the environmental range mentioned above, and power budget).

SDRAM (soldered) Megatel will populate SDRAM on your board tailored to your application's requirements. This memory is solderd in place - one of the reasons our boards are able to pass stringent environmental conditions. Error Checking & Correcting option adds additional redundant memory, sufficient to correct all single bit and most double bit errors, as well as dectecting multiple bit errors. This is usefull in critical applications or where severe environmental conditions may occur (for instance, operation near radiation sources).

Resident Flash Array The resident flash array provides an array of non-volatile memory, mapable into a memory window. BIOS support is provided to make this flash operate as a "solid-state disk" (via BIOS int 13h). Note that OS support may be an issue for any operating system other than DOS.

Environmental Select the desired environmental specification from the list provided. See Processor section for a more detailed descrition.

Video (CRT &/or Flat Panel) The Megatel embedded BIOS fully supports 'headless' operation (no video), with configurable serial port console redirection. The 2MB video configuration should be selected for standard video output applications. The 4MB video configuration supports higher display resolutions. Larger memory configurations may also be usefull where additional video buffers are required for applications such as interactive video or Video Capture.

Video Capture The Video Capture option makes use of the 'Zoom Video' (ZV) port on the video controller to capture without adding load to the PCI bus. It can be configured to capture from composite, component, or S-Video sources.

Swap USB1&2 with Keyboard and Mouse on MASS IO Swapping USB 1&2 signals with the PS2 Keyboard and mouse connectors provides added flexibility for designs not using a full MASS IO connector.

Ethernet Select 10BaseTX for reduced power consumption where transfer speed is not a driving concern. Select 100BaseTX for better through-put with moderate power consumption. Select 1000BaseTX (Gigabit) for best through-put where power consumption and thermal dissipation is not a concern.

Serial Ports One, two or three serial port options. One of the serial ports may be configured as RS485.

Thermal Monitoring Select no thermal monitoring where environmental exrtemes will not be experienced. Addition of a thermal monitor allows use of 'thermal throttling' to dynamically throttle the CPU, reducing disipated heat. The CPU is automatically returned to 100% throttle when local temperature drops below a threshold.

Touch Screen Add an I2C touch screen controller for four or five-wire resistive touch screens. Also provides up to four additional 12-bit analog to digital channels (limited rate). Example code is available for communicating with this controller.

CAN Bus Controller Controller Area Network is a differential serial token-passing standard, commonly used in automotive applicaitons, although it is recently being used in airborne systems and industrial control.

Onboard IDE If space permits, a Compact Flash compatible storage media may be mounted to the bottom of the board, and retained with a single steel core nylon-coated screw. Alternatively, a top-mounted connector can cable to a remotely-mounted CF storage media or IDE drives.

PC/104 Bus Connector PC/104 bus connectors can be 8-bit ISA (PC/XT) or 16-bit ISA (PC/AT). The 'stackable' option provides pins out the bottom of the board for stacking on top of other boards, or in the middle of a stack. The 'non-stackable' option allows use of this board only at the bottom of a stack (note that thermal disipation may require more attention in this configuration).

Mass IO Connector 180-pin MASS IO is the current standard. Order 165-pin for compatibility with earlier Z-Pack MASS IO products (i.e., PC/II+dx) (ethernet is by a 5-pin connector, 1000BaseTX is not supported with the 165-pin Mass IO). Other custom MASS IO connector arrangements are possible (please contact megatel for assistance).

Male MASS IO Connector Male MASS IO connectors are recomended for 'low-use' or 'low-cost' side of the interface. For instance, where the PCpi mates with a very expensive motherboard, it may be appropriate to have the PCpi populated with a male MASS IO connector.

Vertical MASS IO Connector Vertical MASS IO connectors may be specified to alter the termination of MASS IO signals from the standard, which assumes co-planar PCBs. For instance, this option might be used when mounting the PCpi above an OEM PCB, or mounting the megatel QTB below the PCpi to reduce the required footprint, at the expense of height.

Power Supply Connector Standard 12-pin 0.100" connector. This can be configured for 5V only supply, or split 5V and 3.3V supply. If no PC/104 boards will be added, it may be possible to run the PCpi with a 3.3V only supply. RTC (real time clock and NVRAM) power can be supplied either by onboard battery or via an external battery thru the power supply connector or both or none, depending on environmental conditions (most standard batteries cannot tolerate temperature extremes).

Female Power Connector Use of a female power connector is not recomended. The power-sourcing side of the connector should be female to reduce the risk of accidental shorts when servicing equipment.