SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
The MCAN module is configured to allocate 4352 words in the Message RAM. The Message RAM has a width of 32 bits.
The following table presents the Message RAM Address Range for all device MCAN instances.
| Module Instance | Region Name | Address Range | Size | |
|---|---|---|---|---|
| Start | End | |||
| MCAN0 | MCAN0_MSGMEM_RAM | 5260 0000h | 5260 7FFFh | 32 KB |
| MCAN1 | MCAN1_MSGMEM_RAM | 5261 0000h | 5261 7FFFh | 32 KB |
| MCAN2 | MCAN2_MSGMEM_RAM | 5262 0000h | 5262 7FFFh | 32 KB |
| MCAN3 | MCAN3_MSGMEM_RAM | 5263 0000h | 5263 7FFFh | 32 KB |
| MCAN4 | MCAN4_MSGMEM_RAM | 5264 0000h | 5264 7FFFh | 32 KB |
| MCAN5 | MCAN5_MSGMEM_RAM | 5265 0000h | 5265 7FFFh | 32 KB |
| MCAN6 | MCAN6_MSGMEM_RAM | 5266 0000h | 5266 7FFFh | 32 KB |
| MCAN7 | MCAN7_MSGMEM_RAM | 5267 0000h | 5267 7FFFh | 32 KB |
The Message RAM is capable to include each of the sections listed in Figure 13-179. It is not necessary to configure each of the sections (a section in the Message RAM can be 0) and there is no restriction in regards to the sequence of the sections. For parity checking or ECC, the respective number of bits must to be added to each word.
The MCAN module addresses 32-bit words when addressing the Message RAM. The start addresses are configurable and are 32-bit word addresses.
The element size can be configured for:
Figure 13-179 Message RAM ConfigurationThe Host CPU configures the following information in the Message RAM:
The MCAN module does not check for errors in the Message RAM configuration. The configuration of the start addresses of the different sections and the number of elements of each section has to be done carefully to prevent falsification or loss of data.