PIC24EP256GU810-I Datasheet, PDF (162/622 Pages) Electronic Film Capacitors, Inc. – 16-Bit Microcontrollers and Digital Signal Controllers with High-Speed PWM, USB and Advanced Analog

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
8.1 DMA Resources
Many useful resources related to DMA are provided on
the main product page of the Microchip web site for the
devices listed in this data sheet. This product page,
which can be accessed using this link, contains the
latest updates and additional information.
Note:
In the event you are not able to access the
product page using the link above, enter
this URL in your browser:
http://www.microchip.com/wwwproducts/
Devices.aspx?dDocName=en554310
8.1.1 KEY RESOURCES
• Section 22. “Direct Memory Access (DMA)”
(DS70348) in the “dsPIC33E/PIC24E Family
Reference Manual”
• Code Samples
• Application Notes
• Software Libraries
• Webinars
• All related “dsPIC33E/PIC24E Family Reference
Manual” Sections
• Development Tools
8.2 DMA Control Registers
Each DMAC Channel x (where x = 0 through 14)
contains the following registers:
• 16-Bit DMA Channel Control register (DMAxCON)
• 16-Bit DMA Channel IRQ Select register
(DMAxREQ)
• 32-Bit DMA RAM Primary Start Address register
(DMAxSTA)
• 32-Bit DMA RAM Secondary Start Address
register (DMAxSTB)
• 16-Bit DMA Peripheral Address register (DMAxPAD)
• 14-Bit DMA Transfer Count register (DMAxCNT)
Additional status registers (DMAPWC, DMARQC,
DMAPPS, DMALCA and DSADR) are common to all
DMAC channels. These status registers provide infor-
mation on write and request collisions, as well as on
last address and channel access information.
The DMA Interrupt Flags (DMAxIF) are located in an
IFSx register in the interrupt controller. The
corresponding interrupt enable control bits (DMAxIE)
are located in an IECx register in the interrupt
controller, and the corresponding interrupt priority
control bits (DMAxIP) are located in an IPCx register in
the interrupt controller.
DS70616G-page 162
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