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Diffstat (limited to 'fpga/usrp3/lib/control/setting_reg.v')
-rw-r--r-- | fpga/usrp3/lib/control/setting_reg.v | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/control/setting_reg.v b/fpga/usrp3/lib/control/setting_reg.v new file mode 100644 index 000000000..1664f54e2 --- /dev/null +++ b/fpga/usrp3/lib/control/setting_reg.v @@ -0,0 +1,35 @@ +// +// Copyright 2011-2012 Ettus Research LLC +// + + +//---------------------------------------------------------------------- +//-- A settings register is a peripheral for the settings register bus. +//-- When the settings register sees strobe abd a matching address, +//-- the outputs will be become registered to the given input bus. +//---------------------------------------------------------------------- + +module setting_reg + #(parameter my_addr = 0, + parameter awidth = 8, + parameter width = 32, + parameter at_reset=0) + (input clk, input rst, input strobe, input wire [awidth-1:0] addr, + input wire [31:0] in, output reg [width-1:0] out, output reg changed); + + always @(posedge clk) + if(rst) + begin + out <= at_reset; + changed <= 1'b0; + end + else + if(strobe & (my_addr==addr)) + begin + out <= in[width-1:0]; + changed <= 1'b1; + end + else + changed <= 1'b0; + +endmodule // setting_reg |