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minimig : Audio.v : fixed interpolator step calculation to signed.

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This commit is contained in:
Rok Krajnc
2014-02-14 15:20:31 +00:00
parent 8403757b36
commit 2e7df843df
1 changed files with 2 additions and 4 deletions
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6
cores/minimig/rtl/minimig/Audio.v
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@@ -404,8 +404,8 @@ reg [DW+0-1:0] rdata_cur=0, rdata_prev=0;
wire [DW+1-1:0] ldata_step, rdata_step;
reg [DW+ID-1:0] ldata_int=0, rdata_int=0;
wire [DW+0-1:0] ldata_int_out, rdata_int_out;
assign ldata_step = ldata_cur - ldata_prev;
assign rdata_step = rdata_cur - rdata_prev;
assign ldata_step = {ldata_cur[DW-1], ldata_cur} - {ldata_prev[DW-1], ldata_prev}; // signed subtract
assign rdata_step = {rdata_cur[DW-1], rdata_cur} - {rdata_prev[DW-1], rdata_prev}; // signed subtract
always @ (posedge clk) begin
if (~|int_cnt) begin
ldata_prev <= #1 ldata_cur;
@@ -421,8 +421,6 @@ always @ (posedge clk) begin
end
assign ldata_int_out = ldata_int[DW+ID-1:ID];
assign rdata_int_out = rdata_int[DW+ID-1:ID];
//assign ldata_int_out = ldatasum[DW-1:0];
//assign rdata_int_out = rdatasum[DW-1:0];
// input gain x3
wire [DW+2-1:0] ldata_gain, rdata_gain;