Register 20: CAN IF1 Message Control (CANIF1MCTL), offset 0x038
Register 21: CAN IF2 Message Control (CANIF2MCTL), offset 0x098
This register holds the control information associated with the message object to be sent to the
Message RAM.
CAN IF1 Message Control (CANIF1MCTL)
CAN0 base: 0x4004.0000
CAN1 base: 0x4004.1000
CAN2 base: 0x4004.2000
Offset 0x038
Type R/W, reset 0x0000.0000
16171819202122232425262728293031
reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
DLCreservedEOBTXRQSTRMTENRXIETXIEUMASKINTPNDMSGLSTNEWDAT
R/WR/WR/WR/WROROROR/WR/WR/WR/WR/WR/WR/WR/WR/WType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
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.
0x0000ROreserved31:16
New Data
0: No new data has been written into the data portion of this message
object by the message handler since the last time this flag was cleared
by the CPU.
1: The message handler or the CPU has written new data into the data
portion of this message object.
0R/WNEWDAT15
Message Lost
0 : No message was lost since the last time this bit was cleared by the
CPU.
1: The message handler stored a new message into this object when
NEWDAT was set; the CPU has lost a message.
This bit is only valid for message objects when the DIR bit in the
CANIFnARB2 register clear (receive).
0R/WMSGLST14
Interrupt Pending
0: This message object is not the source of an interrupt.
1: This message object is the source of an interrupt. The interrupt
identifier in the CANINT register points to this message object if there
is not another interrupt source with a higher priority.
0R/WINTPND13
Use Acceptance Mask
0: Mask ignored.
1: Use mask (MSK, MXTD, and MDIR bits in the CANIFnMSKn registers)
for acceptance filtering.
0R/WUMASK12
405June 22, 2010
Texas Instruments-Production Data
Stellaris® LM3S8530 Microcontroller