CT2578 Datasheet, PDF (15/22 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 not followed
contiguously by data
word
No status response.
Set message error.
Sequence terminated.
3. Command followed by
too many words.
No status response.
Set message error.
Sequence terminated
4. T/R bit of command set
to one.
No status response.
Set message error.
Sequence terminated.
5. T/R bit of command set
to one and broadcast
address
No status response.
Set message error.
Set broadcast.
Sequence terminated.
RESERVED MODE CODES (16-1F)
* ^RESVD
T/R=1
STATUS
* ^RESVD
T/R=0
DATA
STATUS
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.
Error Conditions
T/R=1
1. Invalid command.
2. Command followed by
another word.
T/R=0
3. Invalid command.
4. Command not followed
contiguously by data
word.
5. Command followed by
too many data words.
Action taken by device
No response.
Command ignored.
No status response.
Set message error.
Sequence terminated.
No response.
Command ignored.
No status response.
Set message error.
Sequence terminated.
No status response.
Set message error.
Sequence terminated.
DETAILED TIMING
1
NVCR
T0-T15
STATUS
NDATA
NHDR
T0-T15
STATUS
3
2
4
5
6
7
8
MIN MAX UNIT
1. NVCR pulse duration
500 650 nS
2. NVCR to T0-T15 valid
250 nS
3. NVCR to T0-T15 invalid
250
nS
4. NVCR to discrete status inputs (not rec)
600 nS
5. NDATA & NHDR pulse duration 475 525 nS
6. T0-T15 valid to NDATA & NHDR 250
nS
7. NDATA & NHDR to T0-T15 invalid 250
nS
8. Last NDATA to discrete status inputs (rec) 250 nS
C1MHZ
NCMDSTRB
T0-T15
1
1
2
3
4
1. C1MHZ to NCMDSTRB
2. NCMDSTRB duration
3. T0-T15 valid to NCMDSTRB
4. NCMDSTRB to T0-T15 invalid
MIN MAX UNIT
75 nS
8475 8525 nS
100
nS
100
nS
C1MHZ
1
2
NCMDSTRB
3
NSSTRB
5
6
T0-T15
SCDCT2578 REV B 3/11/98
15