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authorJosh Blum <josh@joshknows.com>2010-06-18 12:33:40 -0700
committerJosh Blum <josh@joshknows.com>2010-06-18 12:33:40 -0700
commitefbeb60d1dd7e870a48cf42df9a3650aefbf26cd (patch)
tree12131942ff9f85f7776a864cb79120bab778d8f9 /fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v
parentdf80be9c61d95402976d3349acf62630044c1939 (diff)
parentedcc2df10ba59ed91ac9513c2dc1d36e155caaec (diff)
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Merge branch 'uhd_fpga_merge' into pre_merge
Diffstat (limited to 'fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v')
-rw-r--r--fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v53
1 files changed, 0 insertions, 53 deletions
diff --git a/fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v b/fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v
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--- a/fpga/usrp2/control_lib/newfifo/fifo19_to_ll8.v
+++ /dev/null
@@ -1,53 +0,0 @@
-
-module fifo19_to_ll8
- (input clk, input reset, input clear,
- input [18:0] f19_data,
- input f19_src_rdy_i,
- output f19_dst_rdy_o,
-
- output reg [7:0] ll_data,
- output ll_sof_n,
- output ll_eof_n,
- output ll_src_rdy_n,
- input ll_dst_rdy_n);
-
- wire ll_sof, ll_eof, ll_src_rdy;
- assign ll_sof_n = ~ll_sof;
- assign ll_eof_n = ~ll_eof;
- assign ll_src_rdy_n = ~ll_src_rdy;
- wire ll_dst_rdy = ~ll_dst_rdy_n;
-
- wire f19_sof = f19_data[16];
- wire f19_eof = f19_data[17];
- wire f19_occ = f19_data[18];
-
- wire advance, end_early;
- reg state;
-
- always @(posedge clk)
- if(reset)
- state <= 0;
- else
- if(advance)
- if(ll_eof)
- state <= 0;
- else
- state <= state + 1;
-
- always @*
- case(state)
- 0 : ll_data = f19_data[15:8];
- 1 : ll_data = f19_data[7:0];
- default : ll_data = f19_data[15:8];
- endcase // case (state)
-
- assign ll_sof = (state==0) & f19_sof;
- assign ll_eof = f19_eof & ((f19_occ==1)|(state==1));
-
- assign ll_src_rdy = f19_src_rdy_i;
-
- assign advance = ll_src_rdy & ll_dst_rdy;
- assign f19_dst_rdy_o = advance & ((state==1)|ll_eof);
-
-endmodule // fifo19_to_ll8
-