MIL-STD-1553 Interface for Conduction Cooled PMC

Description

Ballard's OmniBus® 1553 PMC brings the power and flexibility of OmniBus 1553 products to the PMC form-factor. This COTS based device offers a rugged, conduction cooled, dual channel 1553 interface. The OmniBus 1553 PMC is able to withstand extreme temperatures, shock and vibration making it ideal for interfacing to MIL-STD-1553 databuses in harsh environments.

TOP OF PAGE

Architecture

The OmniBus 1553 PMC can be a peripheral to a host processor system, or it can be operated as a stand-alone device utilizing the PowerPC embedded processor. The MIL-STD-1553 channels are implemented as hardware modules external to the processor. This results in the user having full utilization of the processor while protocol operations are autonomously performed in hardware. The OmniBus architecture ensures all schedules will be maintained and all data will be received, on fully loaded 1553 databuses. Transmit schedules, message structures and sequential monitor records are all stored in shared memory accessible by both the processor and the protocol hardware. A DMA mode is provided for efficiently transferring data from the on-board sequential monitor to the host processor.

The OmniBus 1553 PMC modules are available with 1 or 2 dual-redundant 1553 channels. To provide flexibility and economy each channel can be ordered in one of five levels of functionality (see table below). All levels provide Bus Controller, Remote Terminal or Monitor operation and support all 1553 message types. The higher levels can concurrently simulate multiple terminals, inject errors, and adjust the waveform.

Levels of functionality for OmniBus 1553 channels:

	A	B4	B32	C	D
Number of Simultaneous Terminals	1	4	32	32	32
Monitor Filtering for terminal address Filtering for subaddress Concurrent terminal monitoring
Protocol Error Injection
Variable Transmit Amplitude
Zero Crossing Distortion

The OmniBus 1553 page contains complete information on MIL-STD-1553 functionality for OmniBus products.

TOP OF PAGE

Additional Capabilities

The OmniBus 1553 PMC is a conduction cooled PMC module with a universal PCI interface. Standard rear panel I/O (P14) or optional front panel I/O connectors provide access to the 1553 databus signals. Additional I/O include RT address inputs, IRIG signals, RS-232/422/485 serial ports, and avionics discretes. These standard interfaces make the OmniBus 1553 PMC useful in a variety of systems.

TOP OF PAGE

Applications

Applications for OmniBus products include operational environments as well as testing and simulation. The multi-channel, multiterminal capability, on-board PowerPC processor, and the rugged, conduction cooled PMC formfactor are ideal for COTS systems. Extensive error detection and generation capability make OmniBus 1553 well suited to product development, simulation, and system testing.

TOP OF PAGE

Software

Users can develop software using the included BTIDriver API. Although the OmniBus 1553 PMC can be easily configured and run with only a few API calls, the comprehensive library includes a broad range of functions for specialized needs.

BTIDriver is a universal API compatible among all OmniBus Family products, so applications developed for other platforms are easily migrated to applications for the OmniBus 1553 PMC.

Software support includes drivers for various operating systems, as well as support for programming the embedded processor.

TOP OF PAGE

Detailed Specifications

TOP OF PAGE

Ordering Information

The order number for an OmniBus 1553 PMC is a combination of the board part number (141) and the channel configuration part number. The table below illustrates the MIL-STD-1553 module numbering scheme. Any mix of levels may be ordered on a single PMC module. The table above describes the 5 levels of functionality (A to D).

Example Configuration:

Part Number: 141-551 /E

• conduction cooled PMC board

• channel 0 is level D

• channel 1 is level A

Ordering Options:

Please contact Ballard Technology about the following standard options:

• conformal coating

• front panel I/O (air-cooled)

TOP OF PAGE