LM3S2139 Luminary Micro, Inc, LM3S2139 Datasheet - Page 409

• Manufacturer Part Number: LM3S2139
• Description: Lm3s2139 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Reset
Reset
Type
Type
CAN Test (CANTST)
CAN0 base: 0x4004.0000
Offset 0x014
Type R/W, reset 0x0000.0000
July 25, 2008
Bit/Field
31:8
6:5
7
4
3
2
RO
RO
31
15
0
0
Register 6: CAN Test (CANTST), offset 0x014
This is the test mode register for self-test and external pin access. It is write-enabled by the Test
bit in the CANCTL register. Different test functions may be combined, however, CAN transfers will
be affected if the Tx bits in this register are not zero.
RO
RO
30
14
0
0
reserved
RO
RO
29
13
0
0
Name
LBack
Silent
Basic
Rx
Tx
RO
RO
28
12
0
0
reserved
RO
RO
27
11
0
0
Type
R/W
R/W
R/W
R/W
RO
RO
RO
RO
26
10
0
0
0x0000
Reset
0x0
RO
RO
25
0
9
0
0
0
0
0
Preliminary
RO
RO
24
0
8
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Receive Observation
Displays the value on the CANnRx pin.
Transmit Control
Overrides control of the CANnTx pin.
Loopback Mode
0: Disabled.
1: Enabled.
Silent Mode
Do not transmit data; monitor the bus. Also known as Bus Monitor mode.
0: Disabled.
1: Enabled.
Basic Mode
0: Disabled.
1: Use CANIF1 registers as transmit buffer, and use CANIF2 registers
as receive buffer.
Value
0x0
0x1
0x2
0x3
reserved
RO
RO
23
Rx
Description
CANnTx is controlled by the CAN module
Sample Point signal driven on the CANnTx pin
CANnTx drives a Low value
CANnTx drives a High value
0
7
0
R/W
RO
22
0
6
0
Tx
R/W
RO
21
0
5
0
LBack
R/W
RO
20
0
4
0
LM3S2139 Microcontroller
Silent
R/W
RO
19
0
3
0
Basic
R/W
RO
18
0
2
0
RO
RO
17
0
1
0
reserved
RO
RO
16
0
0
0
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