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Recommended ID width in AXI Protocol

Evan Lu 6 months ago

In AXI3 and AXI4 protocol document, the recommended transaction ID up to four bits in master components. Also, up to four additional bits of transaction ID for master port numbers in
the interconnect is recommended. How the number 4 is chosen? Does it have any special meaning?

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Colin Campbell 6 months ago +1 verified

I don't think it has any real significance other than 4 bits supporting 16 encodings. So if you had to define a default width, having support for up to 16 managers, each capable of issuing up to 16 different...

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