Datasheet

DCAN Control Registers

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Table 26-34. CAN RX IO Control Register (DCAN RIOC) Field Descriptions (continued)

Bit Field Value Description

2 Dir CAN_RX data direction. This bit controls the direction of the CAN_RX pin when it is configured to

be in GIO mode only (RIOC.Func = 0).

0 The CAN_RX pin is an input.

1 The CAN_RX pin is an output.

Forced to 0, if Init bit of CAN control register is reset.

1 Out CAN_RX data out write. This bit is only active when CAN_RX pin is configured to be in GIO mode

(RIOC.Func = 0) and configured to be an output pin (RIOC.Dir = 1). The value of this bit indicates

the value to be output to the CAN_RX pin.

0 The CAN_RX pin is driven to logic low (0).

1 The CAN_RX pin is at logic high (1).

0 In CAN_RX data in.

0 The CAN_RX pin is at logic low (0).

1 The CAN_RX pin is at logic high (1).

Note: When CAN_RX pin is connected to a CAN transceiver, an external pullup resistor has to be

used to ensure that the CAN bus will not be disturbed (for example, while the DCAN module is

reset).

1222

Controller Area Network (DCAN) Module SPNU562–May 2014

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