PXN20RM Datasheet, PDF (317/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Interrupts and Interrupt Controller (INTC)
Great care must be taken when using the priority elevation as it can enable a master to starve the rest of
the masters in the system. For more information, see Chapter 19, Error Correction Status Module (ECSM).
10.7.3 eDMA Dynamic Interrupt Priority Elevation
The eDMA can handle dynamic priority elevation via the Bandwidth Control (BWC) field of the transfer
control descriptor (TCD). For more information, see Section 24.3.2.17, Transfer Control Descriptor
(TCD). The PXN20 DMA multiplexing source allocation is shown in Table 23-4.
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
10-49