In reply to Sarit8r:
Use the streaming pack/unpack operator
module top;
byte unsigned data[$];
int burst_width, raw_data;
initial begin
raw_data = 'h01234567;
$displayh("raw_data %h",raw_data);
for(burst_width=1;burst_width<5;burst_width++) begin
data = {>>{raw_data with [(burst_width*8)-1:0]}};
$displayh("%0p",data);
end
end
endmodule