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RM0319 bảng dữ liệu(PDF) 352 Page - STMicroelectronics

tên linh kiện RM0319
Giải thích chi tiết về linh kiện  SPEAr320S architecture and functionality
PDF  368 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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RM0319 bảng dữ liệu(HTML) 352 Page - STMicroelectronics

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DMA controller (DMAC)
RM0319
352/368
Doc ID 022640 Rev 3
36.3
Functional description
Figure 116. DMAC block diagram
For the DMA channel assignment, please refer to the DMA_CHN_CFG register description
in the System configuration registers (MISC) section of RM0321: SPEAr320S address map
and registers.
36.3.1
Signal interfaces
The DMAC directly interfaces with the signals summarized in Table 124. A functional
diagram of these signal interfaces is given in Figure 117.
Figure 117. DMAC signal interface diagram
DMA
REQUEST
AND
RESPONSE
BLOCK
AHB SLAVE
INTERFACE
CHANNEL 0
CHANNEL 1
CHANNEL 7
A
R
B
I
T
E
R
A
R
B
I
T
E
R
AHB
MAST
I/F
AHB
MAST
I/F
AHB MASTER
1
AHB MASTER 2
AHB
BUS
DMACTC[15:0]
DMACCLR[15:0]
DMACSREQ[15:0]
DMACBREQ[15:0]
DMACLSREQ[15:0]
DMACLBREQ[15:0]
AHB master #1
AHB master #2
AHB slave
DMA response
DMA request
Interrupt request
(to interrupt controller)
DMAC



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