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util_axis_upscale: Sign extension must be done separately for each channel

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Istvan Csomortani 2019-01-11 15:00:36 +00:00 committed by István Csomortáni
parent 5f8269da03
commit 94f8d1b424
1 changed files with 4 additions and 3 deletions
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7
library/common/util_axis_upscale.v
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@ -63,19 +63,20 @@ module util_axis_upscale # (
wire type_s;
wire signext_s;
wire sign_s;
wire [(NUM_OF_CHANNELS*UDATA_WIDTH)-1:0] data_out_s;
localparam MSB_WIDTH = UDATA_WIDTH - DATA_WIDTH;
assign type_s = dfmt_enable & dfmt_type;
assign signext_s = dfmt_enable & dfmt_se;
assign sign_s = signext_s & (type_s ^ s_axis_data[(DATA_WIDTH-1)]);
genvar i;
generate
for (i=1; i <= NUM_OF_CHANNELS; i=i+1) begin
for (i=1; i <= NUM_OF_CHANNELS; i=i+1) begin : signext_data
wire sign_s;
assign sign_s = signext_s & (type_s ^ s_axis_data[(i*DATA_WIDTH-1)]);
assign data_out_s[(i*UDATA_WIDTH-1):(i*UDATA_WIDTH-MSB_WIDTH)] = {(MSB_WIDTH){sign_s}};
assign data_out_s[((i-1)*UDATA_WIDTH+DATA_WIDTH-1)] = type_s ^ s_axis_data[(i*DATA_WIDTH-1)];
assign data_out_s[((i-1)*UDATA_WIDTH+DATA_WIDTH-2):((i-1)*UDATA_WIDTH)] = s_axis_data[(i*DATA_WIDTH-2):((i-1)*DATA_WIDTH)];