HOLT ADK-620x3, Руководство пользователя

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Holt Integrated Circuits
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priority and high priority messages. View these messages with external MIL-STD-1553 test equipment or
on an oscilloscope.
This exercise uses the internal BC to transmit messages, so message traffic data is displayed on the
console. If an external BC is already connected to the bus jack though a bus coupler, it is okay to leave it
connected, but disable any external BC transmissions that will conflict with the on-chip BC
transmissions. A snap shot of the output data is shown below:
BC Mode (using an external RT)
1. Commands ‘a’ and ‘b’ transmit BC async commands onto the A and B bus respectively and can
be viewed on an oscilloscope, as shown below. These are Receive data commands to an RT
address = ‘3’. A series of four RxData commands are sent with 1 to 4 data words.
2. Connect an RT to BUSA and set RT address to 3, monitor the Bus with a oscilloscope or monitor,
a a response similar to below should be seen, with the RT responding with a clear status word:
3. The ‘f’ command will transmit a Major/Minor frame. These demos demonstrate how Holt API’s
are used to generate BC Asynchronous messages, Major/Minor frames, low priority and high
priority messages. Below is a snap shot of the major frame sequence containing 4 minor frames,
this is continually repeated, the second snap shot shows the first minor frame:
The 0x1800 word is the RT address 3 responding with a clear status.