Transmit / Receive
Transmit Channels
ARINC 429 words are automatically transmitted according to the schedule of words and gaps established by the user. This scheduling allows transmission timing to be accurately controlled. An eight word FIFO and hardware gap timer on the IP429-1 minimize the processing required by the 68040.
Receive Channels
As ARINC 429 words are received, they are saved in memory according to Label/SDI filters established by the user.
Data Access
Configured through command functions, the transmit schedules and receive filters establish how data are organized in memory. During operation, the user can access ARINC 429 words at any time by reading from or writing to the designated memory locations. This can be done over the VMEbus, through the serial port, or, with proper software, through some other communications process (SCSI, Ethernet, etc.). Time tags in a variety of formats may be saved with each word.
Sequential Record
A history of time tagged received and transmitted data can be selectively recorded in a sequential record, from which bus activity may be reconstructed for analysis. Several forms of compression are available to control the size of the sequential record.