Practice Arm Cortex-m0 Bus Interface (3.3) - The ARM Cortex-M0 Processor Architecture: Part 2

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9 questions

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6 sample questions

Question 1.
What does AHB stand for?
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Think about what type of bus it is.
Question 2.
What is an example of Memory-Mapped I/O?
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Consider how you would access a peripheral.
3Question 3.
What does the AHB-Lite bus do?
- A low-speed data bus
- An advanced high-performance data bus
- A basic address bus
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Think about the performance aspect of the bus.
4Question 4.
True or False: DMA requires CPU intervention for memory access.
- True
- False
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Consider what DMA is supposed to do.
Question 5.
Given a scenario where data is being transferred from a sensor to memory using traditional I/O versus DMA, analyze the potential performance differences.
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Think about what happens to the CPU's workload during the transfers.
Question 6.
Design a simple embedded system using the ARM Cortex-M0 where DMA could be crucial. Explain your design decisions.
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Consider what kinds of tasks the CPU must manage versus what can be offloaded.

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