diff options
Diffstat (limited to 'usrp2/sdr_lib')
| -rw-r--r-- | usrp2/sdr_lib/dspengine_8to16.v | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/usrp2/sdr_lib/dspengine_8to16.v b/usrp2/sdr_lib/dspengine_8to16.v index ca808d2a6..bc0aa0352 100644 --- a/usrp2/sdr_lib/dspengine_8to16.v +++ b/usrp2/sdr_lib/dspengine_8to16.v @@ -44,13 +44,14 @@ module dspengine_8to16 localparam DSP_IDLE_RD = 1; localparam DSP_PARSE_HEADER = 2; localparam DSP_READ = 3; - localparam DSP_WRITE_1 = 4; - localparam DSP_WRITE_0 = 5; - localparam DSP_READ_TRAILER = 6; - localparam DSP_WRITE_TRAILER = 7; - localparam DSP_WRITE_HEADER = 8; - localparam DSP_DONE = 9; - + localparam DSP_READ_WAIT = 4; + localparam DSP_WRITE_1 = 5; + localparam DSP_WRITE_0 = 6; + localparam DSP_READ_TRAILER = 7; + localparam DSP_WRITE_TRAILER = 8; + localparam DSP_WRITE_HEADER = 9; + localparam DSP_DONE = 10; + // Parse VITA header wire is_if_data = (access_dat_i[31:29] == 3'b000); wire has_streamid = access_dat_i[28]; @@ -74,13 +75,13 @@ module dspengine_8to16 wire [15:0] data_in_lenx2 = {data_in_len[14:0], 1'b0} - is_odd; reg [7:0] i8_0, q8_0; - wire [7:0] i8_1 = access_dat_i[15:8]; - wire [7:0] q8_1 = access_dat_i[7:0]; + wire [7:0] i8_1 = access_dat_i[31:24]; + wire [7:0] q8_1 = access_dat_i[23:16]; reg skip; always @(posedge clk) - { i8_0, q8_0 } <= access_dat_i[31:16]; + { i8_0, q8_0 } <= access_dat_i[15:0]; always @(posedge clk) if(reset | clear) @@ -137,23 +138,26 @@ module dspengine_8to16 DSP_READ : begin - dsp_state <= DSP_WRITE_1; read_adr <= read_adr - 1; + if(odd) + dsp_state <= DSP_READ_WAIT; + else + dsp_state <= DSP_WRITE_1; + odd <= 0; end + DSP_READ_WAIT : + dsp_state <= DSP_WRITE_0; + DSP_WRITE_1 : begin write_adr <= write_adr - 1; - odd <= 0; if(write_adr == (hdr_length_reg+HEADER_OFFSET)) begin write_adr <= HEADER_OFFSET; dsp_state <= DSP_WRITE_HEADER; end - else if(odd) - dsp_state <= DSP_READ; - else - dsp_state <= DSP_WRITE_0; + dsp_state <= DSP_WRITE_0; end DSP_WRITE_0 : |