Hi all, I have some difficulty by understanding the reason why only one master can own the bus system at the time even if another master do not want to access the same target which responds the first master request. which penalty shall the bus to face if it is suitable to deal with this option? Thanks Mido
Mido11 wrote: > I have some difficulty by understanding the reason why only one master > can own the bus system at the time even if another master do not want to > access the same target which responds the first master request. Because that is how single-layer bus systems work. Historically a bus was a shared medium -- a piece of wire used for both, reading and writing data. Although AHB was never meant to used in such context (bidirectional), it still implements some of the ideas which help keep the area at a minimum. Nowadays, where silicon area isn't as much of an issue, AHB has been superceeded by multi-layer AHB(-Lite) and AXI fabrics. > which penalty shall the bus to face if it is suitable to deal with this > option? See above. -- Marcus
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