Aim MIL-STD-1553 - Page 134

MIL-STD-1553 Reference Manual
120
Chapter 3 – System Functions
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
w
w
_
_
X
X
i
i
d
d
R
R
t
t
S
S
a
a
'uc_BT'
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1 (BC)
XFER_ID
2 (RT)
TR
RT_ADDR
3 (MUX)
TRACK_ID
'uc_BT'
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1 (BC)
XFER_ID
2 (RT)
SUBADDR_MODECODE
3 (MUX)
TRACK_ID
X
X
F
F
E
E
R
R
_
_
I
I
D
D
BC Transfer Identifier
Note: See Section 1.3.5 for the range allowed for this parameter.
T
T
R
R
Type of the RT subaddress / modecode
Value
Value
0
Receive (Simulation and Mailbox)
1
Transmit (Mailbox only)
R
R
T
T
_
_
A
A
D
D
D
D
R
R
Value
Value
0..31
Remote Terminal Address
S
S
U
U
B
B
A
A
D
D
D
D
R
R
_
_
M
M
O
O
D
D
E
E
C
C
O
O
D
D
E
E
Value
Value
1..30
RT Subaddress
0, 31
Modecode
T
T
R
R
A
A
C
C
K
K
_
_
I
I
D
D
Value
Value
0..255
Track Multiplex Buffer Identifier
A
A
i
i
U
U
I
I
n
n
t
t
8
8
u
u
c
c
_
_
M
M
o
o
d
d
e
e
Value
Constant
Description
0
API_DIS
Delete / Disable Track Definition
1
API_ENA
Create Track Definition
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
w
w
_
_
T
T
r
r
a
a
c
c
k
k
S
S
t
t
a
a
r
r
t
t
P
P
o
o
s
s
Value
Description
0..31
Data buffer word number of the Track starting
location
A
A
i
i
U
U
I
I
n
n
t
t
8
8
u
u
c
c
_
_
T
T
r
r
a
a
c
c
k
k
B
B
P
P
o
o
s
s
Value
Description
0..15
Start bit position of the Track Multiplex Buffer Index in the
Track's first word (defined by 'uw_TrackStartPos')
A
A
i
i
U
U
I
I
n
n
t
t
8
8
u
u
c
c
_
_
T
T
r
r
a
a
c
c
k
k
B
B
L
L
e
e
n
n
Value
Description
1..16
Number of bits used for defining the Track Multiplex Buffer
Index in the Track's first word (defined by 'uw_TrackStartPos')
Note: The number of bits selected
(uc_TrackBLen) controls the
range of
(uc_MultiplexedTrackNb) (as
shown in the table at right.)
Range of Number of Multiplexed Tracks
uc_TrackBLen
uw_MultiplexedTrackNb ( max)
1
2
2
4
..
16
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