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-rw-r--r--usrp2/top/E1x0/E1x0.v11
1 files changed, 10 insertions, 1 deletions
diff --git a/usrp2/top/E1x0/E1x0.v b/usrp2/top/E1x0/E1x0.v
index e7b0a4e00..8efb056e9 100644
--- a/usrp2/top/E1x0/E1x0.v
+++ b/usrp2/top/E1x0/E1x0.v
@@ -133,6 +133,15 @@ module E1x0
.S(1'b0)); // 1-bit set input
// /////////////////////////////////////////////////////////////////////////
+ // RX ADC -- handles inversion
+
+ reg [11:0] rx_i, rx_q;
+ always @(posedge clk_fpga) begin
+ rx_i <= ~DA;
+ rx_q <= ~DB;
+ end
+
+ // /////////////////////////////////////////////////////////////////////////
// Main Core
wire [35:0] rx_data, tx_data, ctrl_data, resp_data;
wire rx_src_rdy, rx_dst_rdy, tx_src_rdy, tx_dst_rdy, resp_src_rdy, resp_dst_rdy, ctrl_src_rdy, ctrl_dst_rdy;
@@ -166,7 +175,7 @@ module E1x0
.sclk(sclk), .sen(sen8), .mosi(mosi), .miso(miso),
.io_tx(io_tx), .io_rx(io_rx),
.tx_i(tx_i), .tx_q(tx_q),
- .rx_i(DA), .rx_q(DB),
+ .rx_i(rx_i), .rx_q(rx_q),
.pps_in(PPS_IN) );
// /////////////////////////////////////////////////////////////////////////