25.5.3.2 Transfer Quality of Service
Each priority level group has dedicated quality of service settings. The setting can
be written in the corresponding Quality of Service bit group in the Priority Control x
register (PRICTRL0.QOSn).
When a channel is stored in the Pre-Fetch or Active Channel, the corresponding PRICTRLx.QOS bits value is stored in the respective channel. As shown in Quality of Service, the DMAC will select the highest QOS value between Active and Pre-Fetch channels. This value will apply to all DMAC buses.