DNx-429-566 – ARINC 429 Interface board

• ARINC 429 Interface board with 6 TX and 6 RX channels
• 6 ARINC 429 TX channels
• 6 ARINC 429 RX channels
• High (100 kHz) or low (12.5 kHz) speed selectable by channel
• Hardware Label filtering
• Hardware TX scheduler (100 µs timing resolution)
• Automatic timestamping of RX data (if desired)
• Powerful API included

Receive channels include the ability to filter on Labels so that only data from selected channels is captured. The filter may be set to forward data from between one and 255 Labels, or may be disabled so all data is captured, regardless of source. Each channel may be set such that data receive filtering is also supported based on the Source/Destination Identifier (bits 9 & 10).

Transmit channels may be set to transmit asynchronously or based upon a hardware controlled scheduler. Each channel supports a transmission table that allows up to 256 unique schedules. Transmission schedule resolution is 100 microsecond. There is also a TX mode where a label is transmitted only upon receipt of data from a preprogrammed label.

Asynchronous (non-scheduled) data may be sent with three priorities.

• High priority: sent immediately upon completion of the current transmission, regardless of scheduled messages
• Standard priority: transmitted during times when no scheduled data is being sent
• Lowest priority: streamed from a 256 word FIFO which is sent when no scheduled, high or standard priority data is being transmitted.

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