Destination-address and source-address registers – Texas Instruments TMS320C3x User Manual
Page 436
DMA Controller
12-57
Peripherals
12.3.3.2
Destination-Address and Source-Address Registers
The DMA destination-address and source-address registers are 24-bit registers
whose contents specify destination and source addresses. As specified by
control bits DECSRC, INCSRC, DECDST, and INCDST of the DMA global-
control register, these registers are incremented, decremented, or remain
unchanged at the end of the corresponding memory access; that is, the source
register for a read and the destination register for a write (see Figure 12–39).
On system reset, 0 is written to these registers.
Figure 12–39. DMA Controller Address Generation
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DMA destination-address register
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DMA source-address register
DMA
address
bus
DMA
address
bus
INCSRC
DECSRC
0
1
–1
0
1
–1
INCDST
DECDST
DMA destination-address
generator
DMA source-address
generator