STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx and ...

RM0008
Controller area network (bxCAN)
Table 162.
Transmit mailbox mapping
Offset to transmit mailbox base address
Register name
0 CAN_TIxR
4 CAN_TDTxR
8 CAN_TDLxR
12 CAN_TDHxR
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 MFMI field
of the CAN_RDTxR register. The 16-bit time stamp value is stored in the TIME[15:0] field of
CAN_RDTxR.
Table 163.
Receive mailbox mapping
Offset to receive mailbox base
address (bytes)
Register name
0 CAN_RIxR
4 CAN_RDTxR
8 CAN_RDLxR
12 CAN_RDHxR
Figure 203. CAN error state diagram
Doc ID 13902 Rev 9 557/995