CT2581 Aeroflex Circuit Technology, CT2581 Datasheet - Page 13

• Manufacturer Part Number: CT2581
• Description: Ct2578 / Ct2581 Simple Remote Terminal For Mil-std-1553 / 1760 & Mcair
• Manufacturer: Aeroflex Circuit Technology

RESERVED MODE CODES (09-0F)
The status is not cleared or loaded before it is transmitted with the
message error bit set.
If the command was a broadcast the status transmission will be
suppressed and the broadcast bit in the status register set.
TRANSMIT VECTOR WORD (10)
On receipt of a valid Command to transmit the Vector Word the
device will initially respond with Status.
After the Status response has been initiated the Vector Word will
be enabled onto T0-T15 from the subsystem with signal NENVW
and transferred to the Output Buffer ready for transmission onto the
1553 data bus following the Status.
RESVD
1. Invalid command.
2. Command followed by
3. T/R bit of command set
4. T/R bit of command set
TX VW
1. Invalid command.
2. Command followed by
3. T/R bit of command set
4. Broadcast address.
5. T/R bit of command set
CMD
CMD
to zero.
to zero and broadcast
address
to zero.
to zero and broadcast
address
another word.
another word.
Error Conditions
Error Conditions
SCDCT2578 REV B 3/11/98
*
*
STATUS
STATUS
VW
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 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.
Action taken by device
Action taken by device
13
SYNCHRONIZE WITH DATA WORD (11)
The Synchronize data word received is stored in the data buffer
memory until message validation is complete after which 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.
After the Status response has been initiated the Synchronize Word
will be transferred to the subsystem. The NSYNC signal will go
active low for 500 nS during which time T0-T15 will be set to the
data word received.
TRANSMIT LAST COMMAND (12)
The status response contains the resulting status from the previous
command.
The data word transmitted following the status word contains the
previous valid command (provided it was not Transmit Last
Command).
TX LST
1. Invalid command.
2. Command not followed
3. Command followed by
4. T/R bit of command set
5. T/R bit of command set
SYNC
CMD
CMD
contiguously by data
word
too many words.
to one.
to one and broadcast
address
Error Conditions
*
DATA
STATUS
*
STATUS
CMD
LST
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.
Action taken by device