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The RxD pin of the LIN driver (pin #1) is an open drain output. The necessary pull-up resistor in order to interface
to the Fx3 device is not assembled on the board. To enable operation of the RxD signal
-
either connect an appropriate pull up resister to the related RxD input pin of the LIN channel, or
-
enable the internal Pull-Up resistors available in the Fx3 devices for each LIN input pin.
The corresponding input pin for each RxD pin can be found in Table 6-11.
For additional information on the LIN driver refer to its User's Manual / Datasheet.
Caution:
The RXD reception output pin of the LIN driver (e.g. IC218 pin1) and the RxD reception output pin of
the UART driver (e.g. IC173 pin 12) are physically connected to the same pin on connector CN9 (e.g.
CN9 pin 4).
Therefore
-
when using the LIN driver lift the connected UART driver RxD output pin from the PCB.
-
when using the UART driver place the connected LIN driver in standby mode or lift the LIN
driver RxD output pin from the board.
2.6 CAN
Close CN49 1 – 2 and 3 – 4 to supply power to the CAN drivers.
Close the following jumpers to physically connect the devices CAN signals to the CAN interface drivers located on
the Functional Area of the board:
Signal
CTXD0
CAN0
CRXD0
CTXD1
CAN1
CRXD1
CTXD2
CAN2
CRXD2
CTXD3
CAN3
CRXD3
Table 2-8
CAN signal jumpers
- 13 -
CN24 Pin #
1 – 2
3 – 4
5 – 6
7 – 8
9 – 10
11 – 12
13 – 14
15 – 16
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