Reference Manual AFDX / ARINC 664 Application Interface Library
187
Section 4 – Function Reference: Receiver Functions
Figure 4.4.3.4-1: Monitor Queue Entry Structure of a standard AFDX Frame
Monitor Buffer Entry Layout (
AFDX
)
Word
31
24
23
16
15
8
7
0
0
Previous Buffer Start Pointer - pointer to previous frame
1
Next Buffer Start Pointer
- pointer to the next frame
2
Buffer Entry Control Word (
BECW
)
3 Reserved
4
Frame Header Word 0 (
FHW0
)
- Bitmap of frame errors and VL ID
5
Frame Header Word 1 (
FHW1
)
- Network ID, IFG info, bytes received
6
Frame Header Word 2 (
FHW2
)
- Sequence Number and frame size (minus CRC)
7
Time Tag High Word (
TTHW
)
Fixed Entry Hea
der
8
Time Tag Low Word (
TTLW
)
AFDX Fr
ame
Received AFDX- FRAME
( 802.3 defines: 64 to 1518 bytes
but it may be less or more
at Frame size violation case )
Figure 4.4.3.4-1: Monitor Buffer Entry Layout (APX-GNET)
Monitor Buffer Entry Layout (
GNET
)
Word
31
24
23
16
15
8
7
0
0
Buffer Entry Control Word (
BECW
)
1
Buffer Entry Size Word (
BESW
)
2
Buffer Header Type Word
(
BHTW
)
3
Next Buffer Start Pointer
– pointer to the next frame
4
Frame Header Word 0 (
FHW0
)
– MAC ID, bitmap of frame errors and VL ID
5
Frame Header Word 1 (
FHW1
)
- IFG info, frame bytes received
6
Time Tag High Word (
TTHW
)
Fixed Entry Hea
der
7
Time Tag Low Word (
TTLW
)
AFDX Fr
ame
Received AFDX- FRAME
( 802.3 defines: 64 to 1518 bytes
but it may be less or more
at Frame size violation case )
Summary of Contents for AFDX / ARINC 664
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