PCAN-Wireless Gateway – User Manual
45
Configuring Custom Bit Rates
In Expert mode, you can create a custom bit rate and configure the
sample point. Via the
Custom Bit Rate
checkbox, the necessary
input fields for entering the register values of the CAN controller are
displayed.
The first four fields have a direct impact on the bit rate and the
sample point.
Bit Rate Prescaler:
With this input field, the radio of CPI clock and
serial clock frequency is set. It accepts values from 1 to 256.
Phase Segment 1 & 2:
The phase segments are used to compensate
edge phase errors at the beginning and end of the bit. Phase
Segment 1 expects an input from 1 to 8 and Phase Segment 2
accepts values from 2 to 8.
Propagation Segment:
This time segment is used to compensate
the signal delays over the network and can accept values from 1 to
8.
Calculated bit rate:
The form checks your entries and calculates the
transmission rate using the following formula:
The segment Synchronization is always 1 and is used for the
synchronization of each bus node. The sampling time (sample
point) is determined via Time Segments 1 and 2. Time Segment 1
consists of Phase Segment 1 and the Propagation Segment. Their
