PXS20RM Datasheet, PDF (1024/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

LIN Controller (LINFlexD)
31.10.19 Identifier filter mode register (IFMR)
Offset:0x48
Access: User read/write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R0 0 0 0 0 0 0 0 0 0 0 0
W
IFM¹
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 _{This field is writable only in Initialization mode(LINCR1[INIT] = 1).}
Figure 31-36. Identifier filter mode register (IFMR)
Field
IFM
Table 31-33. IFMR field descriptions
Description
Filter mode
0 Filters 2n and 2n + 1 are in identifier list mode.
1 Filters 2n and 2n + 1 are in mask mode (filter 2n + 1 is the mask for the filter 2n).
31.10.20 Identifier filter control registers (IFCR0–IFCR15)
The function of these registers is different depending on which mode the LINFlexD controller is in, as
described in Table 31-34.
Table 31-34. IFCR functionality based on mode
Mode
Identifier list
Identifier mask
IFCR functionality
Each IFCR register acts as a filter.
If a = (number of filters) / 2, and n = 0 to (a - 1),
then IFCR[2n] acts as a filter and IFCR[2n+1] acts as the mask for IFCR[2n].
31-48
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor