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author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
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committer | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
commit | fd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch) | |
tree | 3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp1/inband_lib/rx_buffer_inband.v | |
parent | 3b66804e41891e358c790b453a7a59ec7462dba4 (diff) | |
download | uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2 uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip |
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp1/inband_lib/rx_buffer_inband.v')
-rwxr-xr-x | fpga/usrp1/inband_lib/rx_buffer_inband.v | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/fpga/usrp1/inband_lib/rx_buffer_inband.v b/fpga/usrp1/inband_lib/rx_buffer_inband.v deleted file mode 100755 index 40c7ec7bd..000000000 --- a/fpga/usrp1/inband_lib/rx_buffer_inband.v +++ /dev/null @@ -1,209 +0,0 @@ -//`include "../common/fpga_regs_common.v"
-//`include "../common/fpga_regs_standard.v"
-module rx_buffer_inband
- ( input usbclk,
- input bus_reset,
- input reset, // DSP side reset (used here), do not reset registers
- input reset_regs, //Only reset registers
- output [15:0] usbdata,
- input RD,
- output wire have_pkt_rdy,
- output reg rx_overrun,
- input wire [3:0] channels,
- input wire [15:0] ch_0,
- input wire [15:0] ch_1,
- input wire [15:0] ch_2,
- input wire [15:0] ch_3,
- input wire [15:0] ch_4,
- input wire [15:0] ch_5,
- input wire [15:0] ch_6,
- input wire [15:0] ch_7,
- input rxclk,
- input rxstrobe,
- input clear_status,
- input [6:0] serial_addr,
- input [31:0] serial_data,
- input serial_strobe,
- output wire [15:0] debugbus,
-
- //Connection with tx_inband
- input rx_WR,
- input [15:0] rx_databus,
- input rx_WR_done,
- output reg rx_WR_enabled,
- //signal strength
- input wire [31:0] rssi_0, input wire [31:0] rssi_1,
- input wire [31:0] rssi_2, input wire [31:0] rssi_3,
- input wire [1:0] tx_underrun
- );
-
- parameter NUM_CHAN = 1;
- genvar i ;
-
- // FX2 Bug Fix
- reg [8:0] read_count;
- always @(negedge usbclk)
- if(bus_reset)
- read_count <= #1 9'd0;
- else if(RD & ~read_count[8])
- read_count <= #1 read_count + 9'd1;
- else
- read_count <= #1 RD ? read_count : 9'b0;
-
- // Time counter
- reg [31:0] timestamp_clock;
- always @(posedge rxclk)
- if (reset)
- timestamp_clock <= 0;
- else
- timestamp_clock <= timestamp_clock + 1;
-
- // USB side fifo
- wire [11:0] rdusedw;
- wire [11:0] wrusedw;
- wire [15:0] fifodata;
- wire [15:0] fifodata_il[0:NUM_CHAN];
- wire WR;
- wire have_space;
- reg sel;
- reg wr;
-
- always@(posedge rxclk)
- begin
- if(reset)
- begin
- sel<=1;
- wr<=0;
- end
- else if(rxstrobe)
- begin
- sel<=0;
- wr<=1;
- end
- else if(wr&~sel)
- sel<=1;
- else if(wr&sel)
- wr<=0;
- else
- wr<=0;
- end
-
- assign fifodata_il[0] = (sel)?ch_1:ch_0;
- assign fifodata_il[1] = (sel)?ch_3:ch_2;
-
- fifo_4kx16_dc rx_usb_fifo (
- .aclr ( reset ),
- .data ( fifodata ),
- .rdclk ( ~usbclk ),
- .rdreq ( RD & ~read_count[8] ),
- .wrclk ( rxclk ),
- .wrreq ( WR ),
- .q ( usbdata ),
- .rdempty ( ),
- .rdusedw ( rdusedw ),
- .wrfull ( ),
- .wrusedw ( wrusedw ) );
-
- assign have_pkt_rdy = (rdusedw >= 12'd256);
- assign have_space = (wrusedw < 12'd760);
-
- // Rx side fifos
- // These are of size [NUM_CHAN:0] because the extra channel is used for the
- // RX command channel. If there were no command channel, they would be
- // NUM_CHAN-1.
- wire chan_rdreq;
- wire [15:0] chan_fifodata;
- wire [9:0] chan_usedw;
- wire [NUM_CHAN:0] chan_empty;
- wire [3:0] rd_select;
- wire [NUM_CHAN:0] rx_full;
-
- packet_builder #(NUM_CHAN) rx_pkt_builer (
- .rxclk ( rxclk ),
- .reset ( reset ),
- .timestamp_clock ( timestamp_clock ),
- .channels ( NUM_CHAN ),
- .chan_rdreq ( chan_rdreq ),
- .chan_fifodata ( chan_fifodata ),
- .chan_empty ( chan_empty ),
- .rd_select ( rd_select ),
- .chan_usedw ( chan_usedw ),
- .WR ( WR ),
- .fifodata ( fifodata ),
- .have_space ( have_space ),
- .rssi_0(rssi_0), .rssi_1(rssi_1),
- .rssi_2(rssi_2),.rssi_3(rssi_3), .debugbus(debug),
- .underrun(tx_underrun));
-
- // Detect overrun
- always @(posedge rxclk)
- if(reset)
- rx_overrun <= 1'b0;
- else if(rx_full[0])
- rx_overrun <= 1'b1;
- else if(clear_status)
- rx_overrun <= 1'b0;
-
-
- // FIXME: what is the purpose of these two lines?
- wire [15:0]ch[NUM_CHAN:0];
- assign ch[0] = ch_0;
-
- wire cmd_empty;
-
- always @(posedge rxclk)
- if(reset)
- rx_WR_enabled <= 1;
- else if(cmd_empty)
- rx_WR_enabled <= 1;
- else if(rx_WR_done)
- rx_WR_enabled <= 0;
-
-
- // Of Size 0:NUM_CHAN due to extra command channel.
- wire [15:0] dataout [0:NUM_CHAN];
- wire [9:0] usedw [0:NUM_CHAN];
- wire empty[0:NUM_CHAN];
-
- generate for (i = 0 ; i < NUM_CHAN; i = i + 1)
- begin : generate_channel_fifos
-
- wire rdreq;
-
- assign rdreq = (rd_select == i) & chan_rdreq;
-
- fifo_1kx16 rx_chan_fifo (
- .aclr ( reset ),
- .clock ( rxclk ),
- .data ( fifodata_il[i] ),
- .rdreq ( rdreq ),
- .wrreq ( ~rx_full[i] & wr),
- .empty (empty[i]),
- .full (rx_full[i]),
- .q ( dataout[i]),
- .usedw ( usedw[i]),
- .almost_empty(chan_empty[i])
- );
- end
- endgenerate
-
- wire [7:0] debug;
-
- fifo_1kx16 rx_cmd_fifo (
- .aclr ( reset ),
- .clock ( rxclk ),
- .data ( rx_databus ),
- .rdreq ( (rd_select == NUM_CHAN) & chan_rdreq ),
- .wrreq ( rx_WR & rx_WR_enabled),
- .empty ( cmd_empty),
- .full ( rx_full[NUM_CHAN] ),
- .q ( dataout[NUM_CHAN]),
- .usedw ( usedw[NUM_CHAN] )
- );
-
- assign chan_empty[NUM_CHAN] = cmd_empty | rx_WR_enabled;
- assign chan_fifodata = dataout[rd_select];
- assign chan_usedw = usedw[rd_select];
- assign debugbus = {4'd0, rxclk, rxstrobe, rx_full[0], rx_full[1], sel, wr};
-
-endmodule
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