CT2553 Datasheet, PDF (14/36 Pages) Aeroflex Circuit Technology – CT2553 / 2554 / 2555 / 2556 Advanced Integrated MUX (AIM) Hybrid FOR MIL-STD-1553

CONTROLLER START
COMMAND RECEIVED
READS STACK POINTER
LOAD BLOCK STATUS WORD
INTO FIRST WORD OF
DESCRIPTOR STACK ENTRY
(SET SOM BIT IN BLOCK
STATUS WORD)
LOAD TIME TAG INTO
SECOND WORD OF
DESCRIPTOR
STACK ENTRY
OBTAIN DATA BLOCK
ADDRESS FROM FOURTH WORD
READ CONTROL WORD TO
DETERMINE TYPE OF TRANSFER
TRANSFER DATA TO/FROM
1553 BUS
UPDATE BLOCK STATUS WORD
UPDATE TIME TAG
INCREMENT STACK
POINTER BY FOUR.
DECREMENT
MESSAGE COUNT
DATA BLOCK
YES
TRANSFERRED OK
?
NO
STOP ON
ERROR SET
?
YES
NO
MORE MESSAGES
YES
TO SEND
?
NO
ISSUE BC EOM
STOP
Aeroflex Circuit Technology
Figure 17 – BC Sequence of Operation
14
SCDCT2553 REV B 8/6/99 Plainview NY [phone]