Dma Peripheral Map Registers; Mdma_Yy_Peripheral_Map) - Analog Devices ADSP-BF506F Hardware Reference Manual

DMA Peripheral Map Registers (DMAx_PERIPHERAL_MAP/

MDMA_yy_PERIPHERAL_MAP)

Each DMA channel's DMAx_PERIPHERAL_MAP register contains bits
that:
• Map the channel to a specific peripheral
• Identify whether the channel is a peripheral DMA channel or a
memory DMA channel

DMA Peripheral Map Registers

(DMAx_PERIPHERAL_MAP/MDMA_yy_PERIPHERAL_MAP)
R/W prior to enabling channel; RO after enabling channel
15 14 13 12 11 10
X
PMAP[3:0]
(Peripheral is mapped to this channel)
Default peripheral mappings are provided in
Figure 7-5. DMA Peripheral Map Registers
Follow these steps to swap the DMA channel priorities of two channels.
Assume that channels 6 and 7 are involved.
1. Make sure DMA is disabled on channels 6 and 7.
2. Write
DMA6_PERIPHERAL_MAP
DMA7_PERIPHERAL_MAP
3. Enable DMA on channels 6 and/or 7.
ADSP-BF50x Blackfin Processor Hardware Reference
9 8 7
X X X X X X X X
Table 7-7 on page
with 0x6000.
Direct Memory Access
6 5 4 3 2 1 0
X X X X X X X
CTYPE (DMA Channel Type) - RO
0 - Peripheral DMA
1 - Memory DMA
7-105.
with 0x7000 and
7-67