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
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.
Most of Sycos Arinc-429 interfaces to VME have receive data time-stamping and external
clock input for time synchronization.