Regarding Arbiter logics in DIgital System

[rakeshrupan]

Hi,
Can any one inform me for type of Arbiter logic are their in digital systems. Also i want to know the Rounded Robin arbiter logic. This is very helpful to me. IF u have any book please send me this id rakeshrupan@gmail.com.

Thanks in advance,
Rakeshrupan.

 

[sree205]

i think this link will help u very much

**broken link removed**

To explain round robin arbiter, its better to go through the priority arbiter as well.

Assuming there are 3 masters, A,B and C, with 3 different priority levels, high, medium and low. During initialization of the system, assuming A is given the highest priority, B is given medium priority and C the low priority. When there is a request by all the masters to access the bus, A will be serviced first. Once its serviced, the priority of A changes from high to low, B changes from medium to high and C changes from low to medium.

This remains the status quo till B is serviced and then it loses its high priority status and changes to low priority. This forms a cycle and this type of arbitration policy is called round robin arbitration. Hope i've been clear. Let me know incase of any clarifications or corrections

 

[rakeshrupan]

Thanks,
Rakeshrupan

Added after 10 minutes:

Are u have any verilog coding for this ?

Please share that.

Thanks,
Rakeshrupan.

 

[sree205]

I don't have a verilog code. but, it should be easy to come up with a state machine on ur own based on my inputs. In anycase, if you have the specification for ur requirement, post here. Even if i don't come up with the verilog code, someone else might