DCAN Registers
Table 23-68. TIOC Register Field Descriptions (continued)
Bit
Field
Type
Reset
Description
1
Out
R/WP
0h
CAN_TX data out write.
This bit is only active when CAN_TX pin is configured to be in GIO
mode (TIOC.Func = 0) and configured to be an output pin (TIOC.Dir
= 1).
The value of this bit indicates the value to be output to the CAN_TX
pin.
Forced to Tx output of the CAN core, if Init bit of CAN control
register is reset.
0x0 = The CAN_TX pin is driven to logic low
0x1 = The CAN_TX pin is driven to logic high
0
In
R
0h
CAN_TX data in.
Note: When CAN_TX 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 (e.g.
while reset of the DCAN module).
0x0 = The CAN_TX pin is at logic low
0x1 = The CAN_TX pin is at logic high
3990
Controller Area Network (CAN)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated