IP PortfolioDatapath and DSPcontrol and scheduling
of_arb_wrr
Weighted round-robin arbiter
Maturity simulatedTargets FPGA + ASICDifficulty EasyPriority 1
Weighted round-robin arbiter for N requesters; requester i keeps the grant for up to weight[i] consecutive accepted grants, then priority rotates round-robin. Weights are run-time inputs.
Simulated. The RTL is lint clean and passes its self-checking testbench against a reference model in simulation. It has not been run on an FPGA board or in silicon.
Interfaces
| Port | Direction | Kind | Width | Notes |
|---|---|---|---|---|
| req | in | parallel | 8 | |
| gnt | out | parallel | 8 |
Standards
No external standard applies.
More in control and scheduling
| ID | Block | Maturity |
|---|---|---|
| of_cnt_updown | Up/down counter | simulated |
| of_cnt_gray | Gray-code counter | simulated |
| of_cnt_johnson | Johnson counter | simulated |
| of_arb_fixed | Fixed-priority arbiter | simulated |
| of_arb_rr | Round-robin arbiter | fpga-routed |
| of_arb_matrix | Matrix (least-recently-granted) arbiter | simulated |
| of_credit_cnt | Credit counter | simulated |
| of_debounce | Debouncer | simulated |
| of_edge_detect | Edge detector | simulated |
| of_oneshot | One-shot (monostable) pulse generator | simulated |