Bus arbitration concept in ARM Architecture - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the main purpose of bus arbitration.

ARM Architecture

The primary role of bus arbitration is to [1] access to the shared bus among multiple devices.

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Aduplicate

Bignore

Cdelay

Dcontrol

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'ignore' because it sounds like ignoring conflicts.

Selecting 'delay' thinking arbitration only causes waiting.

Bus arbitration controls which device can use the shared bus at a given time to avoid conflicts.

2fill in blank

medium

Complete the code to name a common method used in bus arbitration.

ARM Architecture

One common bus arbitration method is called [1] arbitration, where devices take turns based on priority.

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Apriority

Bserial

Cparallel

Drandom

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'random' thinking devices access the bus randomly.

Selecting 'serial' confusing it with data transmission methods.

Priority arbitration assigns different priority levels to devices to decide bus access order.

3fill in blank

hard

Fix the error in the statement about bus arbitration.

ARM Architecture

Bus arbitration ensures that only one device can [1] the bus at a time to avoid conflicts.

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Ashare

Buse

Caccess

Dcontrol

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming multiple devices can use the bus simultaneously.

Confusing 'share' with simultaneous access.

Bus arbitration ensures only one device accesses the bus at a time to avoid conflicts, not simultaneous use.

4fill in blank

hard

Fill both blanks to complete the bus arbitration description.

ARM Architecture

In a [1] arbitration scheme, the device with the highest [2] wins the bus access.

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Apriority

Bspeed

Dsize

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'speed' or 'size' instead of priority.

Mixing up the blanks with unrelated terms.

Priority arbitration grants bus access to the device with the highest priority level.

5fill in blank

hard

Fill all three blanks to complete the bus arbitration code snippet.

ARM Architecture

arbiter = [1]()
request = device.[2]()
if arbiter.[3](request):
    device.access_bus()

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ABusArbiter

Brequest_access

Cgrant_access

DBusController

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'BusController' instead of 'BusArbiter' for the arbiter object.

Confusing 'grant_access' with 'request_access' methods.

This code creates a bus arbiter object, sends a request from a device, and grants access if allowed.