mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 494

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

FlexCAN
25.5.7.1 Receive Mask Registers (RXGMASK, RX14MASK, RX15MASK)
The Rx global mask register (RXGMASK) is composed of 4 bytes. The mask bits are applied to all
Rx-Identifiers excluding Rx-buffers 14-15, that have their specific Rx-mask registers (RX14MASK and
RX15MASK).
25-24
1
2
3
4
5
6
7
Rx_Global_Mas
Rx_14_Mask
Match for Extended Format (MB3).
Match for Standard Format. (MB2).
Un-Match for MB3 because of ID0.
Un-Match for MB3 because of ID28, Match for MB14.
Un-Match for MB14 because of ID27.
Match for MB14.
Un-Match for MB2 because of ID28.
Rx_Msg in
Rx_Msg in
Rx_Msg in
Rx_Msg in
Rx_Msg in
Rx_Msg in
Rx_Msg in
MB14-Id
MB2-Id
MB3-Id
MB4-Id
MB5-Id
k
Table 25-15. Mask examples for Normal/Extended Messages
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
ID28.................ID18
1 1 1 1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1 0 0 0
0 0 0 0 0 0 1 1 1 1 1
0 0 0 0 0 0 1 1 1 0 1
1 1 1 1 1 1 1 1 0 0 1
1 1 1 1 1 1 1 1 0 0 1
0 1 1 1 1 1 1 1 0 0 0
1 0 1 1 1 1 1 1 0 0 0
0 1 1 1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1 1 1 0
1 1 1 1 1 1 1 1 0 0 1
0 1 1 1 1 1 1 1 0 0 0
0 1 1 1 1 1 1 1 1 1 1
Base ID
D
E
0
1
0
1
1
1
0
1
0
1
1
1
I
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
ID17......................................ID0
Extended ID
Freescale Semiconductor
Match
14
3
2
3
4
5
6
1
2
7