Design Article
Product How-To: Adding MIL-STD-1553 to any platform made easy
George Los, product manager, Data Device Corporation (DDC)
5/16/2012 5:47 AM EDT
This article highlights that MIL-STD-1553 is more and more used for industrial applications as well as military, and there are already a multitude of products to simplify its implementation for these purposes.
MIL-STD-1553 is a protocol standard that defines the electrical and functional characteristics of a serial data bus that has been mainly used in military aircraft. The bus architecture of MIL-STD-1553 allows for reduced size and weight of systems and the wiring that interconnects them, is inherently reliable, and incorporates redundancies that make it a safe data bus solution. It has served as the primary command and control interconnect on many different types of military platforms and applications. Traditional embedded 1553 applications involve the use of standard off-the-shelf board form factors like PMC, XMC, and PC/104 boards, or circuit layout designs utilizing 1553 components.
New methods also allow the use of small form factors, which are very tiny cards like mini-PCIe, USB, or other form factors, to add I/O capabilities like 1553 to rugged systems.
Many test systems traditionally use standard off-the-shelf board form factors like PCI, PCIe, cPCI, or PXI boards, while more recent methods involve the use of USB or Ethernet connectivity to the host computer system. Whatever method the system-level designer may choose, adding 1553 capabilities has certainly become much easier over the years. PMC (PCI mezzanine cards) can go into VME, VPX, cPCI/PXI, or PCI chassis systems which incorporate large metal card cages. Embedded PCI mezzanine card (PMC) and switched mezzanine card (XMC) board form factors sit inside rugged embedded card cages for adding 1553 to systems. A PMC is a printed circuit board manufactured to the IEEE P1386.1 standard. There is also a part of the VITA standard that defines PMC conduction cooling. A standard size PMC board is 5.87 inches x 2.91 inches (149 mm x 74 mm) and plugs onto a base board such that the two boards are parallel to each other. Mezzanine cards have played an essential role in embedded systems with single board computers and standard backplanes. XMC is the same size as a PMC board but offers the next generation high-speed back-end interface connection to the host instead of a PCI connection. The most popular type of XMC board is a PCIe back-end interface with high density connectors. DDC offers a complete line of standard off-the-shelf PMC and XMC boards for 1553 applications and typically includes a variety of different types of I/O on-board to save space, power, weight and costs, which are critical in embedded platforms that might only have one PMC or XMC site. One example of this is the newest XMC card from DDC that provides up to 8 dual redundant MIL-STD-1553 channels on a single XMC board.
The PC/104-Plus and PCI-104 form factor is still a very popular small form factor that has allowed embedded and laboratory system designers to keep development costs low through the use of commercial off-the-shelf (COTS) products. This form factor is a compact design that is well-suited for small embedded applications and rapid prototyping in the lab. The card is only 3.575 inches x 3.775 inches (90 mm x 96 mm) and uses a stacking concept where one card sits on top of the other, which allows you to build a tower of cards. The pins from one card insert into the card below it to provide the bus interface. This stacking concept allows system designers to eliminate backplanes that consist of large metal card cages, making the overall format smaller in size and lower in cost.
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MIL-STD-1553 is a protocol standard that defines the electrical and functional characteristics of a serial data bus that has been mainly used in military aircraft. The bus architecture of MIL-STD-1553 allows for reduced size and weight of systems and the wiring that interconnects them, is inherently reliable, and incorporates redundancies that make it a safe data bus solution. It has served as the primary command and control interconnect on many different types of military platforms and applications. Traditional embedded 1553 applications involve the use of standard off-the-shelf board form factors like PMC, XMC, and PC/104 boards, or circuit layout designs utilizing 1553 components.
New methods also allow the use of small form factors, which are very tiny cards like mini-PCIe, USB, or other form factors, to add I/O capabilities like 1553 to rugged systems.
BU-67113U small form factor USB board
Many test systems traditionally use standard off-the-shelf board form factors like PCI, PCIe, cPCI, or PXI boards, while more recent methods involve the use of USB or Ethernet connectivity to the host computer system. Whatever method the system-level designer may choose, adding 1553 capabilities has certainly become much easier over the years. PMC (PCI mezzanine cards) can go into VME, VPX, cPCI/PXI, or PCI chassis systems which incorporate large metal card cages. Embedded PCI mezzanine card (PMC) and switched mezzanine card (XMC) board form factors sit inside rugged embedded card cages for adding 1553 to systems. A PMC is a printed circuit board manufactured to the IEEE P1386.1 standard. There is also a part of the VITA standard that defines PMC conduction cooling. A standard size PMC board is 5.87 inches x 2.91 inches (149 mm x 74 mm) and plugs onto a base board such that the two boards are parallel to each other. Mezzanine cards have played an essential role in embedded systems with single board computers and standard backplanes. XMC is the same size as a PMC board but offers the next generation high-speed back-end interface connection to the host instead of a PCI connection. The most popular type of XMC board is a PCIe back-end interface with high density connectors. DDC offers a complete line of standard off-the-shelf PMC and XMC boards for 1553 applications and typically includes a variety of different types of I/O on-board to save space, power, weight and costs, which are critical in embedded platforms that might only have one PMC or XMC site. One example of this is the newest XMC card from DDC that provides up to 8 dual redundant MIL-STD-1553 channels on a single XMC board.
The PC/104-Plus and PCI-104 form factor is still a very popular small form factor that has allowed embedded and laboratory system designers to keep development costs low through the use of commercial off-the-shelf (COTS) products. This form factor is a compact design that is well-suited for small embedded applications and rapid prototyping in the lab. The card is only 3.575 inches x 3.775 inches (90 mm x 96 mm) and uses a stacking concept where one card sits on top of the other, which allows you to build a tower of cards. The pins from one card insert into the card below it to provide the bus interface. This stacking concept allows system designers to eliminate backplanes that consist of large metal card cages, making the overall format smaller in size and lower in cost.
Next: Page 2
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