first commit after restructuring

adi_library/common/ad_csc_CrYCb2RGB.v

@@ -0,0 +1,116 @@
+// ***************************************************************************
+// ***************************************************************************
+// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
+//
+// In this HDL repository, there are many different and unique modules, consisting
+// of various HDL (Verilog or VHDL) components. The individual modules are
+// developed independently, and may be accompanied by separate and unique license
+// terms.
+//
+// The user should read each of these license terms, and understand the
+// freedoms and responsibilities that he or she has by using this source/core.
+//
+// This core is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+// A PARTICULAR PURPOSE.
+//
+// Redistribution and use of source or resulting binaries, with or without modification
+// of this file, are permitted under one of the following two license terms:
+//
+//   1. The GNU General Public License version 2 as published by the
+//      Free Software Foundation, which can be found in the top level directory
+//      of this repository (LICENSE_GPL2), and also online at:
+//      <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
+//
+// OR
+//
+//   2. An ADI specific BSD license, which can be found in the top level directory
+//      of this repository (LICENSE_ADIBSD), and also on-line at:
+//      https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
+//      This will allow to generate bit files and not release the source code,
+//      as long as it attaches to an ADI device.
+//
+// ***************************************************************************
+// ***************************************************************************
+// Transmit HDMI, CrYCb to RGB conversion
+// The multiplication coefficients are in 1.4.12 format
+// The addition coefficients are in 1.12.12 format
+// R = (+408.583/256)*Cr + (+298.082/256)*Y + ( 000.000/256)*Cb + (-222.921);
+// G = (-208.120/256)*Cr + (+298.082/256)*Y + (-100.291/256)*Cb + (+135.576);
+// B = ( 000.000/256)*Cr + (+298.082/256)*Y + (+516.412/256)*Cb + (-276.836);
+
+`timescale 1ns/100ps
+
+module ad_csc_CrYCb2RGB #(
+
+  parameter   DELAY_DATA_WIDTH = 16) (
+
+  // Cr-Y-Cb inputs
+
+  input                               clk,
+  input       [DELAY_DATA_WIDTH-1:0]  CrYCb_sync,
+  input       [23:0]                  CrYCb_data,
+
+  // R-G-B outputs
+
+  output      [DELAY_DATA_WIDTH-1:0]  RGB_sync,
+  output      [23:0]                  RGB_data);
+
+  localparam  DW = DELAY_DATA_WIDTH - 1;
+
+  // red
+
+  ad_csc  #(
+    .DELAY_DW (DELAY_DATA_WIDTH),
+    .MUL_COEF_DW (18),
+    .SUM_COEF_DW (28),
+    .YCbCr_2_RGB (1))
+  i_csc_R (
+    .clk (clk),
+    .sync (CrYCb_sync),
+    .data (CrYCb_data),
+    .C1 ( 18'd52299),
+    .C2 ( 18'd38154),
+    .C3 ( 18'd0),
+    .C4 (-28'd7304675),
+    .csc_sync (RGB_sync),
+    .csc_data (RGB_data[23:16]));
+
+  // green
+
+  ad_csc  #(
+    .MUL_COEF_DW (18),
+    .SUM_COEF_DW (28),
+    .YCbCr_2_RGB (1))
+  i_csc_G (
+    .clk (clk),
+    .sync (1'd0),
+    .data (CrYCb_data),
+    .C1 (-18'd26639),
+    .C2 ( 18'd38154),
+    .C3 (-18'd12837),
+    .C4 ( 28'd4442554),
+    .csc_sync (),
+    .csc_data (RGB_data[15:8]));
+
+  // blue
+
+  ad_csc #(
+    .MUL_COEF_DW (18),
+    .SUM_COEF_DW (28),
+    .YCbCr_2_RGB (1))
+  i_csc_B (
+    .clk (clk),
+    .sync (1'd0),
+    .data (CrYCb_data),
+    .C1 ( 18'd0),
+    .C2 ( 18'd38154),
+    .C3 ( 18'd66101),
+    .C4 (-28'd9071362),
+    .csc_sync (),
+    .csc_data (RGB_data[7:0]));
+
+endmodule
+
+// ***************************************************************************
+// ***************************************************************************