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DSP56857 bảng dữ liệu(PDF) 185 Page - Freescale Semiconductor, Inc

tên linh kiện DSP56857
Giải thích chi tiết về linh kiện  Digitial Signal Controller
PDF  662 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
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DSP56857 bảng dữ liệu(HTML) 185 Page - Freescale Semiconductor, Inc

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Functional Description
Overview, Rev. 4
Freescale Semiconductor
8-7
8.5 Block Diagram
The ITCN module block diagram is illustrated Figure 8-2.
Figure 8-2. Interrupt Controller Block Diagram
8.6 Functional Description
The Interrupt Controller is a slave on the IPBus. It contains registers each allowing the 70
interrupt sources to be set to one of four priority levels (excluding certain interrupts of fixed
priority). Next, all of the interrupt requests of a given level are priority encoded to determine the
lowest numerical value of the active interrupt requests for that level. Within a given priority level,
zero is the highest priority and number 69 is the lowest.
2 >4
Decode
INT1
INT70
Level 0
Any 0 Level
Any 3 Level
INT
VAB
IPIC
Control
7
7
PIC_EN
IACK
SR[9:8]
Priority
Level
2 >4
Decode
70 >7
Priority
Encoder
Level 3
Priority
Level
70 >7
Priority
Encoder



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