RM0016 Controller area network (beCAN)
Doc ID 14587 Rev 8 379/449
Receive mailbox
When a message has been received, it is available to the software in the FIFO output
mailbox. Once the software has handled the message (e.g. read it) the software must
release the FIFO output mailbox by means of the RFOM bit in the CAN_RFR register to
make the next incoming message available. The filter match index is stored in the
CAN_MFMIR register. The 16-bit time stamp value is stored in the CAN_MTSRH and
CAN_MTSRL registers.
Table 66. Receive mailbox mapping
Offset to Receive Mailbox base
address (bytes)
Register name
0CAN_MFMIR
1 CAN_MDLCR
2 CAN_MIDR1
3 CAN_MIDR2
4 CAN_MIDR3
5 CAN_MIDR4
6CAN_MDAR1
7CAN_MDAR2
8CAN_MDAR3
9CAN_MDAR4
10 CAN_MDAR5
11 CAN_MDAR6
12 CAN_MDAR7
13 CAN_MDAR8
14 CAN_MTSRL
15 CAN_MTSRH
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