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[/] [async_sdm_noc/] [trunk/] [common/] [src/] [mutex_arb.v] - Rev 68
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/* Asynchronous SDM NoC (C)2011 Wei Song Advanced Processor Technologies Group Computer Science, the Univ. of Manchester, UK Authors: Wei Song wsong83@gmail.com License: LGPL 3.0 or later M-to-1 asynchronous multi-way MUTEX arbiter. History: 24/05/2009 Initial version. <wsong83@gmail.com> 23/05/2011 Clean up for opensource. <wsong83@gmail.com> */ module mutex_arb (/*AUTOARG*/ // Outputs gnt, // Inputs req ); parameter wd = 4; // the number of request inputs input [wd-1:0] req; output [wd-1:0] gnt; genvar i,j; wire [wd-1:0] arb_w [wd-1:0]; wire [wd-1:0] gnt; generate for(i=0; i<wd; i=i+1) begin:lv for(j=i+1; j<wd; j=j+1) begin:b mutex2 ME ( .a(arb_w[i][j-1]), .b(arb_w[j][i]), .qa(arb_w[i][j]), .qb(arb_w[j][i+1])); end assign arb_w[i][0] = req[i]; assign gnt[i] = arb_w[i][wd-1]; end endgenerate endmodule // mutex_arb
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