Aim MIL-STD-1553 - Page 283

MIL-STD-1553 Reference Manual
269
Chapter 8 – Remote Terminal Functions
Note: See Section 1.3.5 for the range allowed for this parameter.
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
s
s
i
i
d
d
0 (Reserved for Status Queue Entry Identifier)
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
e
e
i
i
d
d
0 (Reserved for Event Queue Entry Identifier)
A
A
i
i
U
U
I
I
n
n
t
t
8
8
q
q
s
s
i
i
z
z
e
e
Buffer Queue size definition (Amount of contiguous Data Buffers)
Value
Constant
Description
0
API_QUEUE_SIZE_1
Queue size 1
1
API_QUEUE_SIZE_2
Queue size 2
2
API_QUEUE_SIZE_4
Queue size 4
3
API_QUEUE_SIZE_8
Queue size 8
4
API_QUEUE_SIZE_16
Queue size 16
5
API_QUEUE_SIZE_32
Queue size 32
6
API_QUEUE_SIZE_64
Queue size 64
7
API_QUEUE_SIZE_128
Queue size 128
8
API_QUEUE_SIZE_256
Queue size 256
A
A
i
i
U
U
I
I
n
n
t
t
8
8
b
b
q
q
m
m
Buffer Queue Mode
Value
Constant
Description
0
API_BQM_CYCLIC
Cyclic data storage
1
API_BQM_STAY_LAST
Store once and stop at end of
queue (last index) and reuse
last buffer
2
API_BQM_HOST_CONTROLLED
Do not advance automatically
to next buffer (host controlled)
3
Reserved until status queue is
supported
Note: The Buffer Queue Mode is only processed, if the “Buffer is valid”.
The Buffer Queue Modes affect the Current Buffer Index and thus (in
future) the Status- and Event Queue Operation of the RT!
A
A
i
i
U
U
I
I
n
n
t
t
8
8
b
b
s
s
m
m
Data Buffer Store Mode
For Receive RT Operation the following options are valid:
Value
Constant
Description
0
API_BSM_RX_DISCARD
Discard error messages from
the current Data Buffer
1
API_BSM_RX_KEEP_CURRENT
Keep error messages at the
current Data Buffer
For Transmit RT Operation the following options are valid:
Value
Constant
Description
0
API_BSM_TX_KEEP_SAME
Keep the same Data Buffer at
transfer error
1
Reserved