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ARINC 429 VME Products

Sycos Arinc-429 VME-6U interface cards employ standard transceivers for full compliance to the specification or designs that use Sycos Intellectual Property (IP) to address the more comprehensive requirement for aircraft test and simulation systems.


Sycos designs and produces Arinc-429 interfaces to VME to address the full environmental range of standard air cooled, ruggedized air cooled and conduction cooled, with various combinations of transmit and receive channels to match the requirement.


In applications where humidity is of concern, Sycos offers conformal coated cards.


In the main, Sycos Arinc-429 interfaces to VME are dedicated I/O cards, relying upon a host processor for application software. This is an advantage where many channels are required in a system, as one powerful processor can support as many as eight 32-channel cards in a VME chassis. The architecture of Sycos cards makes them easy to use, as all registers and memory on board the cards are mapped into VME memory space. From the host processor, all resources on the cards are accessible by reference to the card’s base address setting. A chassis with one host processor and eight Arinc-429 interface cards is simple to set up in the host processor memory map.


For users that require Williamsburg Protocol support, Sycos offers a card with a processor on board. This particular card allows simultaneous file transfer and broadcast messages.


Sycos cards generally employ FIFO’s for transmit and receive data buffering, but several cards provide the user with Dual Port RAM addressed by Channel, Label, SDI and SSM. This can be a very useful feature where received data is automatically decoded and placed in the Dual Port RAM as a Current Value Table (CVT). Any new labels that arrive on a channel simply overwrite the last value. The host processor need only look at labels of interest, thereby minimizing processor overhead.  Products that employ a CVT type receiver design are extremely useful for displaying data, whereas those employing FIFOs are good for data gathering and storage to disk.