Author: matt Date: 2007-12-22 15:13:54 -0700 (Sat, 22 Dec 2007) New Revision: 7237
Added: usrp2/trunk/fpga/timing/ usrp2/trunk/fpga/timing/timer.v Removed: usrp2/trunk/fpga/control_lib/timer.v Log: move timer, make place for more sync stuff Deleted: usrp2/trunk/fpga/control_lib/timer.v Copied: usrp2/trunk/fpga/timing/timer.v (from rev 7231, usrp2/trunk/fpga/control_lib/timer.v) =================================================================== --- usrp2/trunk/fpga/timing/timer.v (rev 0) +++ usrp2/trunk/fpga/timing/timer.v 2007-12-22 22:13:54 UTC (rev 7237) @@ -0,0 +1,49 @@ + + +module timer + (input wb_clk_i, input rst_i, + input cyc_i, input stb_i, input [2:0] adr_i, + input we_i, input [31:0] dat_i, output [31:0] dat_o, output ack_o, + input sys_clk_i, output [31:0] master_time_o, + output int_o ); + + + reg [31:0] master_time; + always @(posedge sys_clk_i) + if(rst_i) + master_time <= 0; + else + master_time <= master_time + 1; + assign master_time_o = master_time; + + reg [31:0] time_wb; + always @(posedge wb_clk_i) + time_wb <= master_time; + + assign ack_o = stb_i; + + reg [31:0] int_time; + reg int_reg; + + always @(posedge sys_clk_i) + if(rst_i) + begin + int_time <= 0; + int_reg <= 0; + end + else if(|int_time && (master_time == int_time)) + begin + int_time <= 0; + int_reg <= 1; + end + else if(stb_i & we_i) + begin + int_time <= dat_i; + int_reg <= 0; + end + + assign dat_o = time_wb; + assign int_o = int_reg; + +endmodule // timer + _______________________________________________ Commit-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/commit-gnuradio
