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Philips Semiconductors
ARM-based Microcontroller
LUT Error Register (LUTerr - 0xE003 C01C)
Table 153: LUT Error Register (LUTerr - 0xE003 C01C)
LUTerr
Name Function
This read-only bit is set to 1 if the Acceptance Filter encounters an error in the content of the
tables in AF RAM. It is cleared when software reads the LUTerrAd register. This condition
0
is ORed with the "other CAN" interrupts from the CAN controllers, to produce the request for
a VIC interrupt channel.
EXAMPLES OF ACCEPTANCE FILTER TABLES AND ID INDEX VALUES
Suppose that the five Acceptance Filter address registers contain the values shown in the third column below. In this case each
table contains the decimal number of words and entries shown in the next two columns, and the ID Index field of the CANRFS
register can return the decimal values shown in the rightmost column, for CAN messages whose Identifiers match the entries in
that table.
Table 154: Example of Acceptance Filter Tables and ID Index Values
Table
Standard Individual
Standard Group
Extended Individual
Extended Group
Figure 38 below is a more detailed and graphic example of the address registers, table layout, and ID Index values. It shows:
• a Standard Individual table starting at the start of Acceptance Filter RAM and containing 26 Identifiers, followed by
• a Standard Group table containing 12 ranges of Identifiers, followed by
• an Extended Individual table containing 3 Identifiers, followed by
• an Extended Group table containing 2 ranges of Identifiers.
CAN Controllers and Acceptance Filter
Register
Value
SFF_sa
0x040
SFF_GRP_sa
0x060
EFF_sa
0x070
EFF_GRP_sa
0x100
ENDofTable
0x110
209
LPC2119/2129/2292/2294
# words
# entries
ID Indexes
8
16
10
10
4
4
10
10
36
36
10
10
4
2
10
10
Preliminary User Manual
Reset Value
0
0-15
10
16-19
10
20-55
10
56-57
10
May 03, 2004
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