User manual

13 GR-UT699 Development Board
User Manual
2.4.1 Configuration of Bus Termination
The CAN interfaces on the board can be configured for either end node or stub-node
operation by means of the jumpers JP3 and JP4 for interface 1 and 2 respectively, as shown
in Figure 2-5.
For normal end-node termination with a nominal 120 Ohm insert jumpers in position 1-3.
However, if a split termination is desired (if required for improved EMC performance), insert
the jumpers in positions 1-2 and 3-4.
For stub nodes, if termination is not required, do not install any jumpers.
© Aeroflex Gaisler AB March 2013, Rev. 0.6
Figure 2-4: Block Diagram of the CAN interface
CAN
TRANSCEIVER
CAN
TRANSCEIVER
CAN_H
CAN_L
TXD
RXD
CAN
interface 1
CAN
TRANSCEIVER
CAN
TRANSCEIVER
CAN_H
CAN_L
TXD
RXD
CAN
interface 2
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