Generic Channel Registers - Texas Instruments OMAP5910 Technical Reference Manual

5.6.1

Generic Channel Registers

Table 5–12. Channel Source Destination Parameters Register (DMA_CSDP)
Bit Name
15–14 DST_BURST_EN
13 DST_PACK
There is one set of these registers for each generic DMA channel. Although
the DMA has a 32-bit TIPB, all registers are in 16-bit format and must be
accessed as 16-bit data by the MPU.
Value Description
Destination burst enable
Enable/disable bursting on the destination port.
When bursting is enabled, the destination port
performs bursts
4 x dst_width. When bursting is disabled, the
destination port performs single accesses of
dst_width bits.
00 Single access (no burst)
01 Single access (no burst)
10 Burst 4
11 Reserved (do not use this setting)
If the destination port of the channel has no burst
access capability, this field is ignored.
Destination packing
The DMA ports can have a data bus width
different from that of the type of data moved by
the DMA channel. For example, s8 data can be
read on a 32-bit DMA port. The DMA channel has
the capacity to pack four consecutive s8 data
reads in a single 32-bit read access to increase
bandwidth.
0 The destination port never makes packed
accesses.
1 The destination port makes packed accesses.
Type
RW
RW
System DMA Controller
Registers
Reset
Value
00
0
5-41