User`s guide

Tar get Preferences
and the other DM A channels are configured to handle
lower-priority data.
When e nable d, the DMA module s ervices each enabled
channel sequentially until it receives a trigger from
channel 1. Upon receiving the trigger, DMA interrupts
its service to the current channel at the end of the current
word, services the channel 1 burst that generated the
trigger, and then continues servicing the current channel
at the b eginning of the next word.
Disable this channel to give each DMA channel equal
priority, o r if DMA channel 1 is the only enabled channel.
When disabled, the DMA module services each enabled
channel sequentially.
This parameter corresponds to bit 0 (CH1PRIORITY) in
the Priority Control Register 1 (PRIORITYCTRL1).
Note When you select Use DMA (with C28x3x) the
C280x/C28x3x ADC block, this parameter is disabled.
• Enable overflow interrupt
Enable this parameter to have the DMA channel send an
interrupt to the CP U via PIE if the DMA module receives
a peripheral interrupt while a previous interrupt from
the same peripheral is waiting to be serviced.
This parameter is typically used for debugging during the
development phase of a project.
The Enable overflow interrupt parameter corresponds
to bit 7 (OVRINTE) of the Mode Register (M ODE), and
involves the O ve rflow Flag Bit (OVRFLG) and Peripheral
Interrupt Trig ger Flag Bit (P ERINTFLG).
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