ADSP-BF535 Blackfin Processor Hardware Reference
9-13
Direct Memory Access
Figure 9-3. Consecutive DMA Sequences With Descriptor Blocks (2 of 2)
Ownership bit set?
DMA channel copies
Configuration Word B into
DMA Configuration register and tests
Descriptor Block Ownership bit
(bit 15). (See Time T3.)
Y
DMA channel fetches remaining 4 elements
from Descriptor Block B
and performs DMA. (See Time T4.)
N
CONT'D
Y
N
Did
processor
write to Descriptor
Ready register
occur?
DMA channel writes back contents of
DMA Configuration register to address
B+0 (DMA Configuration Word B) of
Descriptor Block B.
DMA channel fetches and copies
DMA_END Word (=0x0001)
into DMA Configuration register
and disables DMA. (See Time T5.)
Содержание ADSP-BF535 Blackfin
Страница 80: ...Development Tools 1 26 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 312: ...Working With Memory 6 86 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 332: ...System Interfaces 7 20 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 360: ...Dynamic Power Management Controller 8 28 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 446: ...Beginning and Ending an SPI Transfer 10 40 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 522: ...Timing Examples 11 76 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 562: ...IrDA Support 12 40 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 608: ...PCI I O Issues 13 46 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 672: ...References 14 64 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 810: ...SDRAM Controller SDC 18 86 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 811: ...ADSP BF535 Blackfin Processor Hardware Reference 18 87 External Bus Interface Unit...
Страница 812: ...SDRAM Controller SDC 18 88 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 860: ...DMA Bus Debug Registers 20 30 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 908: ...SDRAM Controller External Bus Interface Unit B 36 ADSP BF535 Blackfin Processor Hardware Reference...