CT2565 Datasheet, PDF (6/31 Pages) Aeroflex Circuit Technology – CT2565 Bus Controller, Remote Terminal and BUS Monitor FOR MIL-STD-1553B

CONTROL & COMMAND WORDS
START BC OPERATION
HANDSHAKE
(DMA)
MEMORY READ
CONTROL WORD
FROM SSIU
INCREMENT MEM ADDR
OUTPUT
HANDSHAKE
(DMA)
MEMORY READ
COMMAND WORD
FROM SSIU
DATA WORDS
A
NO
RX
YES
CMD
SHORT LOOP
LONG LOOP
NO
STATUS
FROM
RT
YES
HANDSHAKE
(DMA)
HANDSHAKE
(DMA)
MEMORY READ
DATA WORD
FROM SSIU
INCREMENT MEM ADDR
DATA TO 1553
MEMORY WRITE
STATUS WORD
TO SSIU
STATERR
INCREMENT MEM ADDR
MORE
DATA
NO
SHORT LOOP
YES
LONG LOOP
CMD WORD TO 1553
A
TIMEOUT
MSGERR
NO
STATUS
FROM
RT
YES
HANDSHAKE
(DMA)
MEMORY WRITE
DATA WORD
TO SSIU
STATUS
NO
FROM
RT
YES
STATERR
MEMORY WRITE
STATUS WORD
TO SSIU
TIMEOUT
MSGERR
MORE
DATA
YES
NO
END OF MESSAGE PULSE
Notes:
(1) Steps marked with " _ _ _" indicates operation is transparent to user.
(2) Steps marked with " ___" indicates user interaction required.
STOP
Figure 3 – BC Message Transfer Flow
Aeroflex Circuit Technology
6
SCDCT2565 REV B 8/10/99 Plainview NY [phone]