 English |
|
|
|
|
|
|
|
| LM3S5G31 Datasheet, PDF (865/1223 Pages) Texas Instruments – Stellaris LM3S5G31 Microcontroller | |||
| |||
| ◁ |
Stellaris® LM3S5G31 Microcontroller
tTSeg1 = tProp + tPhase1
tTSeg1 = (1 * tq) + (4 * tq)
tTSeg1 = 5 * tq
tTSeg2 = tPhase2
tTSeg2 = (Information Processing Time + 4) Ã tq
tTSeg2 = 4 * tq
\\Assumes IPT=0
tSJW = 4 * tq
\\Least of 4, Phase1, and Phase2
TSEG2
TSEG1
SJW
BRP
= TSeg2 -1
= 4-1
=3
= TSeg1 -1
= 5-1
=4
= SJW -1
= 4-1
=3
= Baud rate prescaler - 1
= 50-1
=49
The final value programmed into the CANBIT register = 0x34F1.
17.4
Register Map
Table 17-6 on page 865 lists the registers. All addresses given are relative to the CAN base address
of:
â CAN0: 0x4004.0000
Note that the CAN controller clock must be enabled before the registers can be programmed (see
page 256). There must be a delay of 3 system clocks after the CAN module clock is enabled before
any CAN module registers are accessed.
Table 17-6. CAN Register Map
Offset Name
Type
0x000 CANCTL
R/W
0x004 CANSTS
R/W
0x008 CANERR
RO
0x00C CANBIT
R/W
0x010 CANINT
RO
0x014 CANTST
R/W
0x018 CANBRPE
R/W
0x020 CANIF1CRQ
R/W
0x024 CANIF1CMSK
R/W
Reset
0x0000.0001
0x0000.0000
0x0000.0000
0x0000.2301
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0001
0x0000.0000
Description
CAN Control
CAN Status
CAN Error Counter
CAN Bit Timing
CAN Interrupt
CAN Test
CAN Baud Rate Prescaler Extension
CAN IF1 Command Request
CAN IF1 Command Mask
See
page
867
869
872
873
874
875
877
878
879
July 03, 2014
865
Texas Instruments-Production Data
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese