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| author | Nick Foster <nick@nerdnetworks.org> | 2012-01-12 13:45:09 -0800 |
|---|---|---|
| committer | Nick Foster <nick@nerdnetworks.org> | 2012-01-12 13:45:09 -0800 |
| commit | a2bb47b824e498cd10a190fac7fb2fdb2da074d0 (patch) | |
| tree | 3d1040a482d5d6e119e017636d93cd4c506e6179 | |
| parent | 3f7ff03c098b5bdbc1134a33c1ea14953f1c2f6f (diff) | |
| download | uhd-a2bb47b824e498cd10a190fac7fb2fdb2da074d0.tar.gz uhd-a2bb47b824e498cd10a190fac7fb2fdb2da074d0.tar.bz2 uhd-a2bb47b824e498cd10a190fac7fb2fdb2da074d0.zip | |
B100: moar buffering on TX for better performance in bidirectional applications
| -rw-r--r-- | usrp2/gpif/slave_fifo.v | 6 | ||||
| -rw-r--r-- | usrp2/top/B100/u1plus_core.v | 4 |
2 files changed, 5 insertions, 5 deletions
diff --git a/usrp2/gpif/slave_fifo.v b/usrp2/gpif/slave_fifo.v index faba2b107..c1a51b008 100644 --- a/usrp2/gpif/slave_fifo.v +++ b/usrp2/gpif/slave_fifo.v @@ -20,7 +20,7 @@ //this is a FIFO master interface for the FX2 in "slave fifo" mode. module slave_fifo - #(parameter TXFIFOSIZE = 11, parameter RXFIFOSIZE = 11) + #(parameter TXFIFOSIZE = 12, parameter RXFIFOSIZE = 12) (// GPIF signals input gpif_clk, input gpif_rst, inout [15:0] gpif_d, @@ -243,7 +243,7 @@ module slave_fifo else data_tx_dst_rdy <= wr_fifo_space >= 256; - fifo_cascade #(.WIDTH(18), .SIZE(10)) wr_fifo + fifo_cascade #(.WIDTH(18), .SIZE(12)) wr_fifo (.clk(gpif_clk), .reset(gpif_rst), .clear(0), .datain({eop,sop,gpif_d}), .src_rdy_i(data_tx_src_rdy), .dst_rdy_o(/*data_tx_dst_rdy*/), .space(wr_fifo_space), .dataout(data_tx_int), .src_rdy_o(tx_src_rdy_int), .dst_rdy_i(tx_dst_rdy_int), .occupied()); @@ -308,7 +308,7 @@ module slave_fifo .arst(fifo_rst)); //rd_fifo buffers writes to the 2clock fifo above - fifo_cascade #(.WIDTH(19), .SIZE(12)) rd_fifo + fifo_cascade #(.WIDTH(19), .SIZE(RXFIFOSIZE)) rd_fifo (.clk(~gpif_clk), .reset(gpif_rst), .clear(0), .datain(data_rx_int), .src_rdy_i(rx_src_rdy_int), .dst_rdy_o(rx_dst_rdy_int), .space(rxfifospace), .dataout(gpif_d_out_data), .src_rdy_o(data_rx_src_rdy), .dst_rdy_i(data_rx_dst_rdy), .occupied()); diff --git a/usrp2/top/B100/u1plus_core.v b/usrp2/top/B100/u1plus_core.v index 88fec3d99..a7b6e677e 100644 --- a/usrp2/top/B100/u1plus_core.v +++ b/usrp2/top/B100/u1plus_core.v @@ -37,8 +37,8 @@ module u1plus_core input pps_in ); - localparam TXFIFOSIZE = 11; - localparam RXFIFOSIZE = 11; + localparam TXFIFOSIZE = 12; + localparam RXFIFOSIZE = 12; // 64 total regs in address space localparam SR_RX_CTRL0 = 0; // 9 regs (+0 to +8) |