Aeroflex GR-UT699, Руководство пользователя

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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
C
A
N
in
te
rf
ac
e
1
CAN
TRANSCEIVER
CAN
TRANSCEIVER
CAN_H
CAN_L
TXD
RXD
C
A
N
in
te
rf
ac
e
2
C
O
N
T
R
O
LL
E
R
L
O
G
IC
I
N
A
S
IC