K60P100M100SF2RM Datasheet, PDF (1365/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Chapter 48 CAN (FlexCAN)
Table 48-117. Matching Possibilities and Resulting Reception Structures
(continued)
RFEN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
IRMQ
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
MRP
Matched in MB
Matched in
FIFO
FIFO enabled, Queue disabled
0
X
NotFull⁶
0
None
Full⁷
0
Free
Full
0
NotFree
Full
1
None
NotFull
1
None
Full
1
Free
X
1
NotFree
X
FIFO enabled, Queue enabled
0
X
NotFull
0
None
Full
0
Free
Full
0
NotFree
Full
1
None
NotFull
1
Free
X
1
NotFree
NotFull
1
NotFree
Full
Reception
Structure
Description
FIFO
None
FirstMB
FirstMB
FIFO
None
FirstMB
FirtsMb
Frame lost by
FIFO full (FIFO
Overflow)
Frame lost by
FIFO full (FIFO
Overflow)
Overrun
FIFO
None
FirstMB
LastMb
FIFO
FirstMB
FIFO
LastMb
Frame lost by
FIFO full (FIFO
Overflow)
Overrun
Overrun
1. This is a don’t care condition.
2. Matched in MB “None” means that the frame has not matched any MB (free-to-receive or non-free-to-receive).
3. This is a forbidden condition.
4. Matched in MB “Free” means that the frame matched at least one MB free-to-receive regardless of whether it has matched
MBs non-free-to-receive.
5. Matched in FIFO “None” means that the frame has not matched any filter in FIFO. It is as if the FIFO didn’t exist
(CTRL2[RFEN]=0).
6. Matched in FIFO “NotFull” means that the frame has matched a FIFO filter and has empty slots to receive it.
7. Matched in FIFO “Full” means that the frame has matched a FIFO filter but couldn’t store it because it has no empty slots
to receive it.
If a non-safe Mailbox inactivation (see Message Buffer Inactivation) occurs during
matching process and the Mailbox inactivated is the temporary matching winner then the
temporary matching winner is invalidated. The matching elements scan is not stopped nor
restarted, it continues normally. The consequence is that the current matching process
works as if the matching elements compared before the inactivation did not exist,
therefore a message may be lost.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1365