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PDF CT2578-02-QM-F84 Data sheet ( Hoja de datos )
| Número de pieza | CT2578-02-QM-F84 | |
| Descripción | CT2578 / CT2581 SIMPLE REMOTE TERMINAL FOR MIL-STD-1553 / 1760 & McAir | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CT2578-02-QM-F84 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
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CT2578 / CT2581
SIMPLE REMOTE TERMINAL
FOR MIL-STD-1553 / 1760 & McAir
FEATURES
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s Complete RT Protocol
s Meets MIL-STD-1553 A/B & MIL-STD-1760
s Simple interface
s Dual Transceivers (1553 / 1760 or McAir)
s +5V only Power Supply
s Low Power (0.15 Watts per Channel)
s Only validated messages transferred
s Optional Data Wrap Around
s Store Released Signal
s Packaging – Hermetic Ceramic
q 119 Lead, 1.28" SQ. x .16" PGA
q 84 Lead, 1.645" SQ. x .14" CQFP
s Any Message may be Illegalized
s McAir Reduced Response Time Option (inh MC1F)
s Optional 1760 checksum
s 1760 Header word identification
s Latched RT Address
s MIL-PRF-38534 Compliant Circuits Available
FUNCTIONAL BLOCK DIAGRAM
BUS 0
MANCHESTER DECODER
16 BIT RECEIVE BUFFER
16 BIT TRANSMIT BUFFER
MANCHESTER DECODER
WATCHDOG TIMER
ENCODER / DECODER
BUS 1
MANCHESTER DECODER
16 BIT RECEIVE BUFFER
16 BIT TRANSMIT BUFFER
MANCHESTER DECODER
WATCHDOG TIMER
ENCODER / DECODER
STATUS REGISTER
COMMAND REGISTER
WORD COUNTER
LAST COMMAND REG
BIT REGISTER
REMOTE TERMINAL
STATE SEQUENCER
RT PROTOCOL
CMD / HRD / DATA
STORE RELEASED
HEADER WORD IDENT
1760 CHECKSUM
GENERATION/VALIDATION
1760 OPTIONS
32 WORD
DATA MEMORY
eroflex Circuit Technology – Data Bus Modules For The Future © SCDCT2578 REV B 3/12/98
1 page  
1. Valid receive command word received, contents available on T0-T15 for illegalization purposes.
2. Valid transmit command word received, contents available on T0-T15.
3. Status response of transmitting terminal received.
4. First valid data word (1760 header word) received, contents available on T0-T15 and stored in 32 word data memory.
5. Last valid data word received, contents available on T0-T15 and stored in 32 word data memory. Status bits must be valid within 250nS.
6. Status register contents transferred to transmit buffer.
7. NCMDSTRB indicates valid message received, command word available on T0-T15.
8. Data words transferred from 32 word data memory to subsystem at 500 nS per word.
MODE CODES WITHOUT DATA
DATA BUS
COMMAND
STATUS
NVCR
NRES/NSYNC
When applicable
T0-T15
12 3
1. Valid command word received, contents available on T0-T15 for illegalization purposes. Status must be valid within 600 nS.
2. Status register contents transferred to transmit buffer.
3. Synchronise mode command, T0-T15 = 0.
MODE CODES WITH DATA RECEIVE
DATA BUS
COMMAND DATA
STATUS
NVCR
NDATA
NSYNC
When applicable
T0-T15
1 234
1. Valid command word received, contents available on T0-T15 for illegalization purposes. Status must be valid within 600 nS.
2. Valid data word received, contents available on T0-T15. Synchronise data word stored in 32 word data memory.
3. Status register contents transferred to transmit buffer after message validation.
4. Synchronise data word(when applicable) transferred from 32 word data memory to main memory and available on T0-T15.
MODE CODES WITH DATA TRANSMIT
DATA BUS
COMMAND
STATUS DATA
NVCR
NENVW
When applicable
T0-T15
123
1. Valid command word received, contents available on T0-T15 for illegalization purposes. Status must be valid within 600 nS.
2. Status register contents transferred to transmit buffer after message validation.
3. Vector word (when applicable) transferred from subsystem to transmit buffer.
SCDCT2578 REV B 3/11/98
5
5 Page 
SYNCHRONIZE WITHOUT DATA WORD (01)
*SYNC
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
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
TRANSMIT STATUS (02)
No status response.
Set message error.
Set broadcast.
Sequence terminated.
*TX ST
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
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.
INITIATE SELF TEST (03)
*I.S.T
CMD
STATUS
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 DIS
CMD
STATUS
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.
SCDCT2578 REV B 3/11/98
11
11 Page | ||
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| PDF Descargar | [ Datasheet CT2578-02-QM-F84.PDF ] | |
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