TX EN
CMD
*
STATUS
INH TF
CMD
*
The device will respond with status and then inhibit any further
setting of the Terminal Flag bit of the status.
Once the Terminal Flag bit has been inhibited it can only be
reactivated by the mode commands 'Override Inhibit Terminal
Flag' or 'Reset Remote Terminal'.
f the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
STATUS
EN TF
CMD
*
STATUS
RESET
CMD
*
The device will respond with status after which the bidirectional
signal NRES to the subsystem will go active low for 500 nS.
ransmitter Shutdown mode commands and Inhibit Terminal Flag
mode command will be reactivated.
the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
STATUS
12
SCDCT2578 REV B 3/11/98
OVERRIDE TRANSMITTER SHUTDOWN (05)
OVERRIDE INHIBIT TERMINAL FLAG (07)
The device will respond with status and reactivate a shutdown
transmitter on the alternate bus.
f the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
The device will respond with status and then reactivate the
Terminal Flag bit of the status register.
If the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
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. T/R bit of command set
to zero and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.
INHIBIT TERMINAL FLAG (06)
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. T/R bit of command set
to zero and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.
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. T/R bit of command set
to zero and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.
RESET REMOTE TERMINAL (08)
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. T/R bit of command set
to zero and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.