diff options
Diffstat (limited to 'usrp2/control_lib/newfifo/ll8_to_fifo36.v')
-rw-r--r-- | usrp2/control_lib/newfifo/ll8_to_fifo36.v | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/usrp2/control_lib/newfifo/ll8_to_fifo36.v b/usrp2/control_lib/newfifo/ll8_to_fifo36.v deleted file mode 100644 index 108daa903..000000000 --- a/usrp2/control_lib/newfifo/ll8_to_fifo36.v +++ /dev/null @@ -1,97 +0,0 @@ - -module ll8_to_fifo36 - (input clk, input reset, input clear, - input [7:0] ll_data, - input ll_sof_n, - input ll_eof_n, - input ll_src_rdy_n, - output ll_dst_rdy_n, - - output [35:0] f36_data, - output f36_src_rdy_o, - input f36_dst_rdy_i ); - - wire f36_write = f36_src_rdy_o & f36_dst_rdy_i; - - // Why anybody would use active low in an FPGA is beyond me... - wire ll_sof = ~ll_sof_n; - wire ll_eof = ~ll_eof_n; - wire ll_src_rdy = ~ll_src_rdy_n; - wire ll_dst_rdy; - assign ll_dst_rdy_n = ~ll_dst_rdy; - - reg f36_sof, f36_eof; - reg [1:0] f36_occ; - - - reg [2:0] state; - reg [7:0] dat0, dat1, dat2, dat3; - - always @(posedge clk) - if(ll_src_rdy & ((state==0)|f36_write)) - f36_sof <= ll_sof; - - always @(posedge clk) - if(ll_src_rdy & ((state !=4)|f36_write)) - f36_eof <= ll_eof; - - always @(posedge clk) - if(ll_eof) - f36_occ <= state[1:0] + 1; - else - f36_occ <= 0; - - always @(posedge clk) - if(reset) - state <= 0; - else - if(ll_src_rdy) - case(state) - 0 : - if(ll_eof) - state <= 4; - else - state <= 1; - 1 : - if(ll_eof) - state <= 4; - else - state <= 2; - 2 : - if(ll_eof) - state <= 4; - else - state <= 3; - 3 : state <= 4; - 4 : - if(f36_dst_rdy_i) - if(ll_eof) - state <= 4; - else - state <= 1; - endcase // case(state) - else - if(f36_write) - state <= 0; - - always @(posedge clk) - if(ll_src_rdy & (state==3)) - dat3 <= ll_data; - - always @(posedge clk) - if(ll_src_rdy & (state==2)) - dat2 <= ll_data; - - always @(posedge clk) - if(ll_src_rdy & (state==1)) - dat1 <= ll_data; - - always @(posedge clk) - if(ll_src_rdy & ((state==0) | f36_write)) - dat0 <= ll_data; - - assign ll_dst_rdy = f36_dst_rdy_i | (state != 4); - assign f36_data = {f36_occ,f36_eof,f36_sof,dat0,dat1,dat2,dat3}; // FIXME endianess - assign f36_src_rdy_o = (state == 4); - -endmodule // ll8_to_fifo36 |