Maximum number of AHB Slave/ Master

[imbichie]

Hi friends

I saw in many PDF and doc that "We can connect maximum of 16 Master/Slave".
Can anyone know Why its limit to 16, means which are the depended parameters???

 

[ckshivaram]

Amba AHB can eventually support a maximum of 16 co processors maximum.... Since 4 lines are used to communicate with external devices and other lines are dedicated to interact with the internal peripherals.....

only for that purpose AMBA architecture was restricted to ARM7 and later processors were developed with AMBA -AXI bus and the AMBA architecture were improved in the further releases

 

[imbichie]

Hi Friend
Thank you for your reply.
Which are those 4 lines that are used for communicate with external devices.

 

[ckshivaram]

CPnI
CPA
CPB. &
nReset

 

[sandeep_mudumba]

what is this AMBA architecture i know abt ARM but wat are AMBA & AHB...

 

[imbichie]

AMBA is a On chip communication protocol developed by ARM. for more details look on wiki or ARM's Documentation

 

[asickrishna]

Hi ckshivaram,

"Amba AHB can eventually support a maximum of 16 co processors maximum.... Since 4 lines are used to communicate with external devices and other lines are dedicated to interact with the internal peripherals.....
only for that purpose AMBA architecture was restricted to ARM7 and later processors were developed with AMBA -AXI bus and the AMBA architecture were improved in the further releases"

Its depend on Latest bus architecture implemented in ARM processor or any other solution

 

[shhrikant1]

Can anyone tell me that what are the advantages of I2C over AMBA or vice-versa?

 

[ckshivaram]

You cannot compare I2c and AMBA bus... the question is not relevant as they are completely different architecture..

---------- Post added at 13:07 ---------- Previous post was at 13:05 ----------

Amba Bus is much more advanced architecture which interconnects core to peripherals via vpb bus