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authorMatt Ettus <matt@ettus.com>2009-09-24 22:34:06 -0700
committerMatt Ettus <matt@ettus.com>2009-09-24 22:34:06 -0700
commit1b613dc7c995029b88391ffff768672d30149a1e (patch)
treee1a479a267d091e50f5e127a9458b846abdd6e0b /sdr_lib
parent622efe894fd4ec2fced85355029b879e5c1fb32f (diff)
parent618ebd292a5b0acf221ef2d4ccf1a19596bc6c86 (diff)
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Merge commit 'origin' into new_eth
Conflicts: .gitignore
Diffstat (limited to 'sdr_lib')
-rw-r--r--sdr_lib/dsp_core_rx.v8
-rw-r--r--sdr_lib/hb_dec.v5
-rw-r--r--sdr_lib/small_hb_dec.v22
3 files changed, 24 insertions, 11 deletions
diff --git a/sdr_lib/dsp_core_rx.v b/sdr_lib/dsp_core_rx.v
index ee713e4ac..af4f0b9fb 100644
--- a/sdr_lib/dsp_core_rx.v
+++ b/sdr_lib/dsp_core_rx.v
@@ -139,20 +139,20 @@ module dsp_core_rx
always @(posedge clk) strobe_cic_d1 <= strobe_cic;
small_hb_dec #(.WIDTH(18)) small_hb_i
- (.clk(clk),.rst(rst),.bypass(~enable_hb1),
+ (.clk(clk),.rst(rst),.bypass(~enable_hb1),.run(run),
.stb_in(strobe_cic_d1),.data_in(i_cic_scaled),.stb_out(strobe_hb1),.data_out(i_hb1));
small_hb_dec #(.WIDTH(18)) small_hb_q
- (.clk(clk),.rst(rst),.bypass(~enable_hb1),
+ (.clk(clk),.rst(rst),.bypass(~enable_hb1),.run(run),
.stb_in(strobe_cic_d1),.data_in(q_cic_scaled),.stb_out(),.data_out(q_hb1));
wire [8:0] cpi_hb = enable_hb1 ? {cic_decim_rate,1'b0} : {1'b0,cic_decim_rate};
hb_dec #(.IWIDTH(18), .OWIDTH(18), .CWIDTH(18), .ACCWIDTH(24)) hb_i
- (.clk(clk),.rst(rst),.bypass(~enable_hb2),.cpi(cpi_hb),
+ (.clk(clk),.rst(rst),.bypass(~enable_hb2),.run(run),.cpi(cpi_hb),
.stb_in(strobe_hb1),.data_in(i_hb1),.stb_out(strobe_hb2),.data_out(i_hb2));
hb_dec #(.IWIDTH(18), .OWIDTH(18), .CWIDTH(18), .ACCWIDTH(24)) hb_q
- (.clk(clk),.rst(rst),.bypass(~enable_hb2),.cpi(cpi_hb),
+ (.clk(clk),.rst(rst),.bypass(~enable_hb2),.run(run),.cpi(cpi_hb),
.stb_in(strobe_hb1),.data_in(q_hb1),.stb_out(),.data_out(q_hb2));
round #(.bits_in(18),.bits_out(16)) round_iout (.in(i_hb2),.out(i_out));
diff --git a/sdr_lib/hb_dec.v b/sdr_lib/hb_dec.v
index b256eb57f..8fb5ba222 100644
--- a/sdr_lib/hb_dec.v
+++ b/sdr_lib/hb_dec.v
@@ -9,6 +9,7 @@ module hb_dec
(input clk,
input rst,
input bypass,
+ input run,
input [8:0] cpi, // Clocks per input -- equal to the decimation ratio ahead of this block
input stb_in,
input [IWIDTH-1:0] data_in,
@@ -25,7 +26,7 @@ module hb_dec
assign do_mult = 1;
always @(posedge clk)
- if(rst)
+ if(rst | ~run)
odd <= 0;
else if(stb_in)
odd <= ~odd;
@@ -34,7 +35,7 @@ module hb_dec
assign write_even = stb_in & ~odd;
always @(posedge clk)
- if(rst)
+ if(rst | ~run)
phase <= 0;
else if(stb_in & odd)
phase <= 1;
diff --git a/sdr_lib/small_hb_dec.v b/sdr_lib/small_hb_dec.v
index 9957de15a..8519b628a 100644
--- a/sdr_lib/small_hb_dec.v
+++ b/sdr_lib/small_hb_dec.v
@@ -8,6 +8,7 @@ module small_hb_dec
(input clk,
input rst,
input bypass,
+ input run,
input stb_in,
input [WIDTH-1:0] data_in,
output reg stb_out,
@@ -21,15 +22,26 @@ module small_hb_dec
wire go;
reg phase, go_d1, go_d2, go_d3, go_d4;
always @(posedge clk)
- if(rst)
+ if(rst | ~run)
phase <= 0;
else if(stb_in_d1)
phase <= ~phase;
assign go = stb_in_d1 & phase;
- always @(posedge clk) go_d1 <= go;
- always @(posedge clk) go_d2 <= go_d1;
- always @(posedge clk) go_d3 <= go_d2;
- always @(posedge clk) go_d4 <= go_d3;
+ always @(posedge clk)
+ if(rst | ~run)
+ begin
+ go_d1 <= 0;
+ go_d2 <= 0;
+ go_d3 <= 0;
+ go_d4 <= 0;
+ end
+ else
+ begin
+ go_d1 <= go;
+ go_d2 <= go_d1;
+ go_d3 <= go_d2;
+ go_d4 <= go_d3;
+ end
wire [17:0] coeff_a = -10690;
wire [17:0] coeff_b = 75809;