AVR-Chat

Jim White said:
>
> Thanks.
>
> I just looked at DDC and have posted them a question on the minimum
> number  of I/O lines needed to interface Their ACE to a embedded
> controller.  The  data sheet would indicate about 40 - as in a PCI bus
> or the like.  A  nonstarter for us.
>
> What we really need is a serial to 1553 converter sort of like the
> simple  serial to RS-422 chips on the market, but which does the
> protocol as  well.  Or even the CP2101 and similar RS-232 to USB
> converters.

Jim,

You haven't said what mode of operation you need, i.e. bus controller or
remote terminal?

Assuming for a minute that you need to be a remote terminal (RT), one
method that would be easy to interface to a micro is shared (dual-port)
memory.  The 1553 bus hybrid would store and read data to buffers assigned
for each subaddress that you need.  The micro would be free to read and
write data from its port.  You may need to provide some register decoding
as well as the memory decode for the dual-port memory.  This will be the
least intrusive method to handle for the microcontroller.

Mike