CT2566 查看數據表（PDF） - Aeroflex Corporation

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CT2566

CT2566 MIL-STD-1553 to Microprocessor Interface Unit

Aeroflex Corporation 

* 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

ISSUE BC START TO 1553 DEVICE

READ CONTROL WORD TO

DETERMINE TYPE OF TRANSFER

TRANSFER DATA TO/FROM

1553 BUS (NOTE: RAM NOW

CONTROLLED BY INPUT PINS

CS AND OE

UPDATE BLOCK STATUS WORD

UPDATE TIME TAG

INCREMENT STACK

POINTER BY FOUR.

DECREMENT

MESSAGE COUNT

DATA BLOCK

TRANSFERRED OK

?

NO

YES

STOP ON

ERROR SET

?

YES

NO

MORE MESSAGES

TO SEND

?

NO

ISSUE BC EOM

YES

STOP

* After controller start is issued the subsystem must wait until BCEOM is active

before issuing the next controller start.

Figure 14 – BC Sequence of Operation (Under CT2566 Control)

Aeroflex Circuit Technology

13

SCDCT2566 REV B 8/10/99 Plainview NY (516) 694-6700

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