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| author | Matt Ettus <matt@ettus.com> | 2010-06-17 13:59:51 -0700 |
|---|---|---|
| committer | Matt Ettus <matt@ettus.com> | 2010-06-17 13:59:51 -0700 |
| commit | 55e0d893e8a596e18c9eeb34e6f518e03c26dd80 (patch) | |
| tree | 08f90a78f3f680a47bfc535e533c5e87d317165c /usrp2/gpmc/gpmc_to_fifo_async.v | |
| parent | a97707caa8e9f19fdc81061ac11a73f41aab2704 (diff) | |
| download | uhd-55e0d893e8a596e18c9eeb34e6f518e03c26dd80.tar.gz uhd-55e0d893e8a596e18c9eeb34e6f518e03c26dd80.tar.bz2 uhd-55e0d893e8a596e18c9eeb34e6f518e03c26dd80.zip | |
added ability to clear out fifos of tx and rx.
Diffstat (limited to 'usrp2/gpmc/gpmc_to_fifo_async.v')
| -rw-r--r-- | usrp2/gpmc/gpmc_to_fifo_async.v | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/usrp2/gpmc/gpmc_to_fifo_async.v b/usrp2/gpmc/gpmc_to_fifo_async.v index 3d29745a2..55c0cef50 100644 --- a/usrp2/gpmc/gpmc_to_fifo_async.v +++ b/usrp2/gpmc/gpmc_to_fifo_async.v @@ -2,7 +2,7 @@ module gpmc_to_fifo_async (input [15:0] EM_D, input [1:0] EM_NBE, input EM_NCS, input EM_NWE, - input fifo_clk, input fifo_rst, + input fifo_clk, input fifo_rst, input clear, output reg [17:0] data_o, output reg src_rdy_o, input dst_rdy_i, input [15:0] frame_len, input [15:0] fifo_space, output reg fifo_ready, @@ -37,7 +37,7 @@ module gpmc_to_fifo_async end always @(posedge fifo_clk) - if(fifo_rst) + if(fifo_rst | clear) src_rdy_o <= 0; else if(do_write) src_rdy_o <= 1; @@ -45,7 +45,7 @@ module gpmc_to_fifo_async src_rdy_o <= 0; // Assume it was taken always @(posedge fifo_clk) - if(fifo_rst) + if(fifo_rst | clear) counter <= 0; else if(do_write) if(last_write) @@ -54,13 +54,13 @@ module gpmc_to_fifo_async counter <= counter + 1; always @(posedge fifo_clk) - if(fifo_rst) + if(fifo_rst | clear) fifo_ready <= 0; else fifo_ready <= /* first_write & */ (fifo_space > 16'd1023); always @(posedge fifo_clk) - if(fifo_rst) + if(fifo_rst | clear) bus_error <= 0; else if(src_rdy_o & ~dst_rdy_i) bus_error <= 1; |