adding input buffering to bus arbiters to reduce backpressure delay propagation

2020-12-05 17:31:29 -08:00
parent 13a5370254
commit d0f2a3984d
17 changed files with 480 additions and 338 deletions
--- a/hw/rtl/libs/VX_rr_arbiter.v
+++ b/hw/rtl/libs/VX_rr_arbiter.v
@@ -6,9 +6,9 @@ module VX_rr_arbiter #(
    parameter LOG_NUM_REQS = $clog2(NUM_REQS)
 ) (
    input  wire                     clk,
-    input  wire                     reset,
-    input  wire [NUM_REQS-1:0]      requests,           
+    input  wire                     reset,          
    input  wire                     enable,
+    input  wire [NUM_REQS-1:0]      requests, 
    output wire [LOG_NUM_REQS-1:0]  grant_index,
    output wire [NUM_REQS-1:0]      grant_onehot,   
    output wire                     grant_valid