question about APB frequency

[rakesh_reddy]

Hi.,

1) Can someone tell me what could be the maximum clock frequency of apb bus..?
2) Like frequency ranges of apb bus at which it can work.?





Thanks,
Rakesh.

 

[jbeniston]

There are no restrictions.

 

[rakesh_reddy]

thank you..! it means that we can use this bus even for high frequency applications too.!!??

 

[jbeniston]

You can, but throughput isn't very good, as APB takes at least two cycles per transaction. Better to use AHB.

 

[rakesh_reddy]

ok., thank you so much.

 

[imbichie]

Hi,
Most of the Design (SoC), the APB bus is used for register configuration.
For bulk data transfer (eg: Video, EMAC) in AMBA we are using AHB or AXI.
AXI is better than AHB.

 

[rakesh_reddy]

hi imbichie ,
thank you for your response..,
can you gimme little info about how to initiate MakeUnique transaction using ace/axi4 transactions. I mean which signal is used for initiating that transaction..?