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26
of
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6
Structure of an Ethernet 100BASET1_SPY RAW frame
In
Switch Status
, when the user selects a Gigabit Port in the
Output To
field, the packet received in
the selected BroadR-Reach, CAN, LIN of FlexRay port will be logged through the selected Gigabit Port
into an Ethernet RAW frame. The following picture shows the structure of an Ethernet
100BASET1_SPY RAW frame, in the case that the Header is enabled in the
Spy Multiplexer
page (see
Chapter 5.4.2.).
Note:
The data Frames are enhanced with additional information as an exact timestamp and the bus
port the data was originally sent on. Timestamps are in 0.04 μs resolution and synchronous to all
connected lines.
Note:
The Direction field specifies if the frame is being received (Direction 0x01) or transmitted
(Direction 0x00).
Note:
In the case of BroadR-Reach port, there will be always an Ethernet frame in the selected
Gigabit port. If the Header is disabled in
Spy Multiplexer
(see section 5.4.2), the sent Ethernet frame
will be and standard UDP RAW Ethernet frame. If that Header is enabled, the Ethernet frame will
have the format shown in the table.
Note:
The number of bytes of the payload depends on the Length field.
Destination
MAC
(6 bytes)
Source
MAC
(6
bytes)
Ethernet
Type
(2 bytes)
Direction
(1 byte)
Time
Stamp
(6
bytes)
Port
(1
byte)
Extra
(1
byte)
Length
(2
bytes)
Payload
(BR,
CAN,
LIN,
Flexray
packet)
CRC
(4
bytes)
Field Name
No. Of Bytes Value
Destination MAC Address
6
FF:FF:FF:FF:FF:FF
Source MAC Address
6
00:50:C2:E4:30:00
Ethernet Type
2
See the table below
Direction
1
0x01 (RX frame)
Time Stamp
6
See the note below
Port
1
See the table below
Extra
1
0x00
Length
2
Payload
X
BR, CAN, LIN, FlexRay packets (see sections 6.1,
6.2, 6.3, 6.4 and 6.5)
CRC
4
Ethernet BRSPY Frame Header