10

FIGURE 8. MIL-STD-1553 CHARACTER FORMATS

FIGURE 9. MIL-STD-1553 WORD FORMATS

NOTE:

1. This page is a summary of MIL-STD-1553 and is not intended to describe the operation of the HD-15531.

BIT

PERIOD

BIT

PERIOD

BIT

PERIOD

LOGICAL ONE DATA

LOGICAL ZERO DATA

COMMAND

SYNC

DATA

SYNC

TERMINAL

SYNC

0

1

2

3

4

5

6

7

8

9

10

11

12

13

141516

1718

19

COMMAND WORD (FROM CONTROLLER TO TERMINAL)

DATA WORD (SENT EITHER DIRECTION)

STATUS WORD (FROM TERMINAL TO CONTROLLER)

51

5

5

1

P

ADDRESS

SUB ADDRESS

/MODE

DATA WORD

COUNT

SYNC

R/T

DATA WORD

1

P

51

9

1

1

TERMINAL

ADDRESS

CODE FOR FAILURE MODES

P

SYNC

TF

16

HD-15531