The message space includes:
- 32 TX buffers
- 32 RX ID filter-mask pairs
- 32 TX event buffers
- 64-deep message RX buffers
The following table provides CANFD message space register information.
Note: This memory space is implemented in RAM. After a reset, the contents
are not cleared, but should be considered invalid.
Name | Register Count | Access Type | Description |
---|---|---|---|
32 TX Buffers - ID, DLC and 16 data words | |||
32 |
RW |
IDs: TxBuff_ID_Msg_{0:31}, addr step = |
|
32 RX Acceptance Filter - Mask and ID | |||
32 |
RW RW |
Masks: AF_Mask_Reg_{0:31}, addr step = |
|
32 TX Event FIFO - ID and Data Length Codes | |||
32 |
R |
IDs: TxEvent_ID_Reg_{0:31}, addr step = |
|
32 Message RX Buffer 0 | |||
64 |
R |
IDs: RxBuff0_ID_Msg_{0:63}, addr step = |
|
32 Message RX Buffer 1 | |||
64 |
R |
IDs: RxBuff1_ID_Msg_{0:63}, addr step = |