Answered: Complete the below timing diagram for…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Complete the below timing diagram for the following sequence of bus transactions:
o device A wants to do a read transaction and has asserted REQ A# at the start of cycle 0 o device B wants to do a write transaction and has asserted REQ B# at the start of cycle 0 o device C wants to do a read transaction and has asserted REQ C# at the start of cycle 0 Make the following assumptions:

o devices A, B only want to transfer one piece of datum, C wants to transfer 2 pieces of datum.

o the arbiter uses a round-robin priority scheme where currently Device B has the highest priority and device A has the lowest priority.

o for A transaction, both the initiator and target are ready as soon as possible. o for B transaction, the target is not ready for 2 clock cycles.
o for C transaction:

during the first transfer both initiator and target are ready as soon as possible.
during the second transfer the initiator is not ready for 1 clock cycle.

Before cycle 0 starts, the previous bus master de-asserts IRDY# so it is free