PXD20RM Datasheet, PDF (1003/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Field
IFMI
Table 27-32. IFMI field descriptions
Description
Filter match index
This register contains the index corresponding to the received ID. It can be used to directly write or
read the data in RAM (refer to Section 27.7.2, Slave mode, for more details).
When no filter matches, IFMI = 0. When Filter n is matching, IFMI = n + 1.
27.10.19 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
IFM
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Field
IFM
Figure 27-36. Identifier filter mode register (IFMR)
Table 27-33. 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).
(See Table 27-34.)
Table 27-34. IFMR[IFM] configuration
Bit Value
Result
IFM[0] 0 Filters 0 and 1 are in identifier list mode.
1 Filters 0 and 1 are in mask mode (filter 1 is the mask for the filter 0).
IFM[1] 0 Filters 2 and 3 are in identifier list mode.
1 Filters 2 and 3 are in mask mode (filter 3 is the mask for the filter 2).
IFM[2] 0 Filters 4 and 5 are in identifier list mode.
1 Filters 4 and 5 are in mask mode (filter 5 is the mask for the filter 4).
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
27-47