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What Is a Data Path?

What Is a Data Path?

November 30, 2022 by Mel Hawthorne Leave a Comment

A datapath is a sequential collection of functional units. To put it more simply, it’s a set of logical processors that perform data processing in a certain order. Datapaths form the basics of a CPU, when combined with a control unit. Larger datapaths can consist of multiple smaller datapaths as well.

Think of datapaths like city maps – smaller neighbourhoods connect into bigger cities, and once a house is built and put on the map, it can’t simply be moved, rearranged, or redrawn – just like how datapaths, once set, can’t be altered again.

One single data path is made up of the set of registers, between which the CPU’s internal buses travel and transport data back and forth. Once they are set, datapaths can’t be changed again. So, if a datapath is configured in a certain way, it can’t be changed again later. There is research into creating re-configurable datapaths, but so far, that isn’t possible. The lack of reconfigurability means that processes don’t run as efficiently or effectively as they could – at least in theory. This has been in research since the 1990s – so far, without success.

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Baby and Daddy My name is Mitch Bartlett. I've been working in technology for over 20 years in a wide range of tech jobs from Tech Support to Software Testing. I started this site as a technical guide for myself and it has grown into what I hope is a useful reference for all.

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