Initial commit of OpenSPARC T2 design and verification files.
[OpenSPARC-T2-DV] / libs / clk / n2_clk_clkchp_4sel_32x_cust_l / n2_clk_clkchp_4sel_32x_cust / rtl / n2_clk_clkchp_4sel_32x_cust.v
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1// ========== Copyright Header Begin ==========================================
2//
3// OpenSPARC T2 Processor File: n2_clk_clkchp_4sel_32x_cust.v
4// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
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9// This program is free software; you can redistribute it and/or modify
10// it under the terms of the GNU General Public License as published by
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34// ========== Copyright Header End ============================================
35module n2_clk_clkchp_4sel_32x_cust (tck, aclk, bclk, s500, s1000, s1500, s2000);
36input tck, s500, s1000, s1500, s2000;
37output aclk, bclk;
38
39// synopsys translate_off
40
41reg aclk, bclk;
42
43initial
44 begin
45 aclk=1'b0;
46 bclk=1'b0;
47 end
48always@(posedge tck)
49 begin
50 bclk=1'b0;
51 #1 if(tck==1) aclk=1'b1;
52 #1 if(s500==1) aclk=1'b0;
53 #1 if(s1000==1) aclk=1'b0;
54 #1 if(s1500==1) aclk=1'b0;
55 #1 if(s2000==1) aclk=1'b0;
56 end
57always@(negedge tck)
58 begin
59 #1 if(tck==0 && aclk==0) bclk=1'b1;
60 #1 if(s500==1) bclk=1'b0;
61 #1 if(s1000==1) bclk=1'b0;
62 #1 if(s1500==1) bclk=1'b0;
63 #1 if(s2000==1) bclk=1'b0;
64 end
65
66// synopsys translate_on
67
68endmodule