Texas Instruments OMAP5912 Reference Manual page 781

Table 111. Channel Source Destination Parameters Registers
(DMA_CSDP0...DMA_CSDP5) (Continued)
Bit Name
8:7 SRC_BURST_EN
6 SRC_PACK
5:2 SRC
1:0 DATA_TYPE
SPRU755B
Function
Source burst enable
A burst in the DMA controller refers to four
consecutive 32-bit accesses at a DMA port.
SRC_BURST_EN determines whether the DMA
controller performs a burst transfer at the source
port of the channel.
00: Single access
01: Single access
10: Burst 16 bytes
11: Illegal
Source packing
The DMA controller can perform data packing to
double or quadruple the amount of data passed to
the destination. For example, if an 8-bit data type
is selected and the source port has a 32-bit data
bus, four 8-bit pieces of data can be packed into
32 bits before being sent through the channel. The
packing is made with respect to endianism.
0: The source port never makes packed accesses.
1: The source port makes packed accesses when
possible.
Transfer source
A unique identifier is given to each port. This field
indicates which port is the source of the channel
transfer operation.
0000: SARAM
0001: DARAM
0010: EMIF
0011: TIPB
0100: MPUI
Others: Illegal
For details, see Section 4.23.1.
Direct Memory Access (DMA) Support
DSP DMA
Type Reset
RW 00
RW 0
RW 0000
RW 00
157