Aim AFDX / ARINC 664, Reference Manual, Page: 89 / 252

Reference Manual AFDX / ARINC 664 Application Interface Library 77
Section 4 – Function Reference: Transmitter Functions
For Header Type
FDX_TX_FRAME_HEADER_REPLAY (FIFO mode)
see following
description.
T
T
Y
Y
_
_
F
F
D
D
X
X
_
_
T
T
X
X
_
_
F
F
I
I
F
F
O
O
_
_
F
F
R
R
A
A
M
M
E
E
_
_
H
H
E
E
A
A
D
D
E
E
R
R
This is a structural description of the frame buffer header
typedef struct _fdx_tx_fifo_frame_header {
AiUInt32 ul_Reserved1;
AiUInt32 ul_Reserved2;
AiUInt32 ul_Reserved3;
AiUInt32 ul_Reserved4;
AiUInt32 ul_FrameHeaderWord0;
AiUInt32 ul_FrameHeaderWord1;
AiUInt32 ul_FrameHeaderWord2;
AiUInt32 ul_Reserved5;
AiUInt32 ul_Reserved6;
} TY_FDX_TX_FIFO_FRAME_HEADER;
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
l
l
_
_
R
R
e
e
s
s
e
e
r
r
v
v
e
e
d
d
1
1
Reserved
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
l
l
_
_
R
R
e
e
s
s
e
e
r
r
v
v
e
e
d
d
2
2
Reserved
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
l
l
_
_
R
R
e
e
s
s
e
e
r
r
v
v
e
e
d
d
3
3
Reserved
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
u
u
l
l
_
_
R
R
e
e
s
s
e
e
r
r
v
v
e
e
d
d
4
4
Reserved
Frame Header Word 0 contains following information
Value Bit Description
Reserved 31..20 reserved
19 CRC error transmitted in this frame
18 Wrong Byte alignment in transmit frame, which
means that an odd number f nibbles will be
transmitted. Therefore, this error also cause a CRC
error condition.
17 Wrong Preamble/SFD Sequence transmitted. If this
function is enabled, the Encoder device injects an
Error within the Start Frame Delimiter.
Note: if a Wrong Reamble/SFD Sequence is
transmitted, the Physical Receiver devices connected
on the network may get some problems to detect the
current frame proberly.
Physical Error Injection
16 Physical Symbol Error. During the Frame
transmission in 100Mbit/s operattion mode, the MAC
– Encoder deviceasserts the TX-Error signal, which
forces the phydical tranceiver to transmit ‘HALT’-
Symbols. The error type is not available in 10Mbit/s
operation mode.
TX-Skew 15…0 Thias 16 bit value defines the skew in microseconds
between two redundant frames in transmission. The
skwe can be programmed from 0ms up to 65ms, with
a resolution of 1 microsenconds. The port, where the
delayed frame is transmitted is defined in the Frame
Header Word 1.This value is only used, if the
Interface is configured in redundant operation mode.