Hi @Dat Tran ,
All information are inside Reference Manual.
In complex product, there is a DMAMUX in front of DMAs to allow much more flexibility.
The list of resource is inside the DMAMUX section.
Note that MDMA (devoted to Linux secure/non-secure usage) has their connections described in a separate section under 'Block interconnect / MDMA'
CubeMX might also help you as DMAMUX could be also shared with Linux (where DMA1 and/or DMA2 are assigned to either Linux or Cortex-M, but not shared).
Regards.
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