Channel Destination Start Address - Texas Instruments OMAP5912 Reference Manual

DSP DMA
Table 116. Channel Source Start Address, Lower Bits Registers
(DMA_CSSA_L0...DMA_CSSA_L5)
Bit Name
31:16 Reserved
15:0 Source start address,
lower bits
Table 117. Channel Source Start Address, Upper Bits Registers
(DMA_CSSA_U0...DMA_CSSA_U5)
Bit Name
31:16 Reserved
15:0 Source start address,
upper bits
4.23.3

Channel Destination Start Address

170 Direct Memory Access (DMA) Support
Note:
Load the source start address registers with a byte address. For a word
address, shift left by 1 before loading the registers.
For a 16-bit or 32-bit data type, the start address must be aligned properly.
See the description of the data type bits of DMA_CSDP.
Function
Lower bits of the source start address are
expressed in bytes. The source start address
generated by the DMA is up to a 32-bit byte
address, made of the concatenation of
DMA_CSSA_U and DMA_CSSA_L.
Function
Upper bits of the source start address are
expressed in bytes. The source start address
generated by the DMA is a byte address, made up
of the concatenation of DMA_CSSA_U and
DMA_CSSA_L.
Each channel has two destination start address registers: DMA_CDSA_L and
DMA_CDSA_U. For the first access to the destination port of the channel, the
DMA controller generates a byte address by concatenating the contents of the
two I/O mapped registers.
Source address DMA_CDSA_U:DMA_CDSA_L
Note:
You must load the source start address registers with a byte address. If you
have a word address, shift left by 1 before loading the registers. If you have
a 16-bit or 32-bit data type, the start address must be aligned properly. See
the description of the data type bits of DMA_CSDP.
Type Reset
RW Undefined
Type Reset
RW Undefined
SPRU755B