SYNCHRONIZE WITHOUT DATA WORD (01)
INITIATE SELF TEST (03)
SYNC
CMD
*
STATUS
I.S.T
CMD
*
STATUS
The device will respond with status. The NSYNC signal will go
active low for 500 nS. Throughout this period the highway T0-
T15 will be zero and remain at zero until the next command is
received.
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 followed by
another word.
3. T/R bit of command set
to zero.
4. T/R bit of command set
to zero and broadcast
address
TRANSMIT STATUS (02)
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.
The device will respond with status..
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 followed by
another word.
3. T/R bit of command set
to zero.
4. 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.
TRANSMITTER SHUTDOWN (04)
TX ST
CMD
*
STATUS
TX DIS
CMD
*
STATUS
The status register is not cleared or loaded before it is transmitted,
i.e. it contains the resulting status from the previous command.
Error Conditions
1. Invalid command.
2. Command followed by
another word.
3. T/R bit of command set
to zero.
4. 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.
The device will respond with status and shutdown the transmitter
on the alternate bus, thus inhibiting any further transmission on that
bus.
Once a transmitter has been shutdown it can only be reactivated by
the mode commands 'Override Transmitter Shutdown' 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 followed by
another word.
3. T/R bit of command set
to zero.
4. 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.
5. T/R bit of command set
to zero and broadcast
address
SCDCT2578 REV B 3/11/98
11
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
