CT2578 Datasheet, PDF (14/22 Pages) Aeroflex Circuit Technology – CT2578 / CT2581 SIMPLE REMOTE TERMINAL FOR MIL-STD-1553 / 1760 & McAir

Error Conditions
Action taken by device
1. Invalid command.
No response.
Command ignored.
2. Command followed by
another word.
No status response.
Set message error.
Sequence terminated.
3. T/R bit of command set
to zero.
No status response.
Set message error.
Sequence terminated
4. Broadcast address.
No status response.
Set message error.
Set broadcast.
Sequence terminated.
5. T/R bit of command set
to zero and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.
TRANSMIT BIT WORD (13)
* TX BIT
CMD
STATUS
BIT
WORD
On receipt of a valid Command to transmit the BIT Word the
device will respond with Status followed by the BIT word, after
which the BIT register is cleared.
Bits 2 to 15 are always zero. Bit 1 is set if the subsystem sends too
many NSSTRB’s.
Error Conditions
1. Invalid command.
2. Command followed by
another word.
3. T/R bit of command set
to zero.
4. Broadcast address.
5. T/R bit of command set
to zero and broadcast
address
Action taken by device
No response.
Command ignored.
No status response.
Set message error.
Sequence terminated.
No status response.
Set message error.
Sequence terminated
No status response.
Set message error.
Set broadcast.
Sequence terminated.
No status response.
Set message error.
Set broadcast.
Sequence terminated.
SELECTED TRANSMITTER SHUTDOWN (14)
* TX DIS
CMD
DATA
STATUS
This mode command is not normally used in dual redundant
systems.
The device will respond with status and shut down the transmitter
on the bus designated by the two least significant bits of the data
word.
The bus addresses of the device are channel 0 - 00, channel
1 - 01. If the command is received on the same bus as the
designated shut down bus then the device will respond with status
and no shut down will occur.
Once a transmitter has been shut down it can only be reactivated by
an 'Override Shutdown Command' or 'Reset Remote Terminal'.
If the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
Error Conditions
1. Invalid command.
2. Command not followed
contiguously by data
word
3. Command followed by
too many words.
4. T/R bit of command set
to one.
5. T/R bit of command set
to one and broadcast
address
Action taken by device
No response.
Command ignored.
No status response.
Set message error.
Sequence terminated.
No status response.
Set message error.
Sequence terminated
No status response.
Set message error.
Sequence terminated.
No status response.
Set message error.
Set broadcast.
Sequence terminated.
OVERRIDE SEL TRANSMITTER SHUTDOWN (15)
* ^{TX EN}
CMD
DATA
STATUS
This mode command is not normally used in dual redundant
systems.
The device will respond with status and reactivate a shutdown
transmitter on the bus designated by the two least significant bits
of the data word.
The bus addresses of the device are channel 0 - 00 channel
1 - 01. If the command is received on the same bus as the
designated override shutdown bus then the device will respond
with status and no reactivation will occur.
If the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
SCDCT2578 REV B 3/11/98
14