CC2430 Datasheet, PDF (87/234 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
Initialization
Write DMA
channel
configuration
DMA Channel Idle
no
DMAARMx=1
yes
Load DMA
Channel
configuration
yes
no
DMA Channel
Armed
yes
ABORT=1 and
DMAARMx=1
no
Trigger or
DMAREQx
no
no
yes
Transfer one byte
or word when
channel is granted
access .
DMAARMx=0
Modify source/
destination
address
Reached
transfer count?
yes
Interrupt request
ABORT=1 and
DMAARMx=1
Figure 17: DMA Operation
13.2.2 DMA Configuration Parameters
Setup and control of the DMA operation is
performed by the user software. This section
describes the parameters which must be
configured before a DMA channel can be
used. Section 13.2.3 on page 90 describes
how the parameters are set up in software and
passed to the DMA controller.
CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A
Page 87 of 232