Vector VN5610 - Page 15

2.4 Examples of Usage
Manual VN5610/VN5610A Version 2.0 15
> MAC bypassing
Use this mode if you want to monitor Ethernet packets and also send additional
packets. In this mode, the processing time can be dynamic.
VN5610(A)
MAC
Ethernet Controller
PHY
BroadR-Reach
Transceiver
Rx
MAC Bypassing
PC
CANalyzer.Ethernet/CANoe.Ethernet
Rx
Tx
ECU1
ECU2
Δ
t
Tx
MAC
Ethernet Controller
PHY
BroadR-Reach
Transceiver
Rx
Rx
Tx
Tx
Tx
Figure 6: MAC bypassing
Physical Layer Bypassing Latency ∆t*
100BASE-T1

100BASE-T1 approx. 4.6 µs
100BASE-T1

100BASE-TX approx. 4.2 µs
100BASE-TX

100BASE-TX approx. 3.8 µs
1000BASE-T

1000BASE-T approx. 0.9 µs
* Processing time without additional frames through the application
(CANalyzer.Ethernet/CANoe.Ethernet)
Note
The MAC bypassing latency is independent of the frame length (Cut-through mode)
if there are no bypassing conflicts (e.g. additional frames sent by an application).
If additional frames are sent by an application, the bypass latency depends on the
frame length (Store-and-Forward Mode).