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PC/104 Interface for MIL-STD-1553

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PC/104 Interface for MIL-STD-1553
PM1553-1
  • BC, RT, and Monitor modes
  • 32K x 16 memory
  • Powerful SÁMMIT« protocol processor
  • MIL-STD-1760 support
  • Configurable discretes (4 in/2 out)
  • Custom versions available
  • PC/104 compliant

PM1553-1

The PM1553-1 is a low-cost dual-redundant MIL-STD-1553 interface for PC/104-embedded computers. It can be programmed to function as a 1553 Bus Controller (BC), Remote Terminal (RT), or Monitor. In addition to 1553 capability, the PM1553-1 has configurable input (4) and output (2) discretes. The PM1553-1 has many features that minimize the load on the host processor and can even eliminate the need for additional cards. The straightforward architecture and I/O-mapped registers make integration and applications programming a simple task in any operating system.

Designed for flexibility

Designed for flexibility, the PM1553-1 can be ordered in various configurations to provide the most cost-effective solution for a given application. Industrial temperature range is standard; military temperature range is available. For rugged applications, the standard switches and movable jumpers can be replaced with fixed settings, and conformal coating is available. Input discretes may be configured for different voltages in a variety of series and shunt circuits. Output discretes are open-collector with an optional internal pull-up resistor. The PM1553-1 is available with or without the discretes and MIL-STD-1760 capability. An RT-only version is also available.

MIL-STD-1553

MIL-STD-1553 functionality is provided by an Aeroflex UTMC SÁMMIT protocol processor. Once configured by software, the SÁMMIT runs autonomously, handling messages without further host intervention. In Bus Controller mode, frame timing, retries, and exception processing are all programmable and handled automatically. In Remote Terminal mode, subaddresses and mode codes may be selectively illegalized during initialization. Messages may be buffered in an indexed 256-message buffer or in a ping-pong double buffer on a subaddress-by-subaddress basis. A record of interrupts is maintained in an interrupt log list. When in Monitor mode, the PM1553-1 records a time-tagged command and data history of bus traffic to and from all or selected terminals.

MIL-STD-1760

The PM1553-1 may be used in MIL-STD-1760 systems, which require connector-programmable RT addresses and fast initialization. Jumpers enable this capability, and the EEPROM provides the autoinitialization data. The five RT address lines and the required address parity are inputs to a connector on the PM1553-1.

Autoinitialization

The mode, RT address, and data structures can be either initialized by the host processor or automatically initialized at power-on. Jumpers and an on-board EEPROM select the settings and provide data for initialization. The host can reprogram the contents of the EEPROM. For critical applications, a PROM may be used in place of the EEPROM. Fast autoinitialization enables the PM1553-1 to respond to 1553 command words on the databus even before the host processor has finished booting.

Discretes

The PM1553-1 is available with up to four input and two output discretes. The input discretes are factory-configured to the desired circuit and threshold voltage. A variety of series and shunt configurations (open/ground, voltage/ground, and voltage/open) are available. In addition to analog filtering, inputs are debounced through a programmable digital circuit. Each input discrete may be programmed to issue a service request on the positive and/or negative edge the input signal. Output discretes are under host control and have open-collector circuits with optional pull-up resistors.


The Downloads section contains data sheets with complete information for PM1553-1 product.

Easy to program

The PM1553-1 may be programmed in most languages and operating systems. All accesses to the PM1553-1 are through registers in an I/O address window. Polling and/or interrupts may be used to handle the service requests generated by the various resources. Provided with the PM1553-1 are files containing many software helper functions and examples that demonstrate how easy it is to program and use the PM1553-1.

TypeTitleDate
  Datasheet PM1553-1 Datasheet 10/30/2008
X Product Manual PM1553-1 Manual 9/14/2007
X Driver 32-bit Windows Driver Installer 8/12/2015
X Driver 64-bit Windows Driver Installer 8/12/2015
X API - Drivers - Test Program PM1553-1 API, Driver & Test Program 4/4/2006
X Linux PM1553-1 Libraries for Linux 5/20/2015
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