Hi, Update, probably found the problem, from the Reference Manual RM0440 rev 8 pag.420: For category 2 devices: •DMAMUX channels 0 to 5 are connected to DMA1 channels 1 to 6 •DMAMUX channels 6 to 11 are connected to DMA2 channels 1 to 6 This is wrong, channels 1 to 6 of DMA2 are mapped on DMAMUX cha...