CAN Controllers and Acceptance Filter 210 May 03, 2004
Philips Semiconductors Preliminary User Manual
LPC2119/2129/2292/2294ARM-based Microcontroller
Figure 38: Detailed Example of Acceptance Filter Tables and ID Index Values
FULLCAN MODE
When fullCAN mode is enabled, the Acceptance Filter itself takes care of receiving and storing messages for selected Standard
ID values on selected CAN buses, in the style of “FullCAN” controllers.
In order to set this bit and use this mode, two other conditions must be met with respect to the contents of Acceptance Filter RAM
and the pointers into it:
SFF_sa 0 d := 000 h := 0 0000 0000b
column_lower column_upper
0
1
2
3
22
23
24
25
SFF_GRP_sa 52 d := 034 h := 0 0011 0100b
EFF_sa 100 d := 64 h := 0 0110 0100b
EFF_GRP_sa 112 d := 70 h := 0 0111 0000b
ENDofTable 128 d := 080 h := 0 1000 0000b
lower_boundary 3
lower_boundary 41
upper_boundary
lower_boundary 42
upper_boundary
lower_boundary 3 5 upper boundary
6
ID Index #
Look-up Table RAM
88d =
84d =
52d =
00d =
04d =
44d =
48d = 30h
34h
54h
58h
00h
04h
2Ch
VPB BASE+
Address
22
1
3
23
0
2
2524
2
4 upper boundary
26 d
34 d
35 d
100d =64h 38 38 d
92d = 5Ch lower_boundary 3 6 upper boundary 36
68h
d
39 39 d104d =
112d =70h 41 d
116d =74h
120d =78h 42
124d =7Ch
d
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