115 lines
3.2 KiB
Plaintext
115 lines
3.2 KiB
Plaintext
/******************************************************************************
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The MIT License (MIT)
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Copyright (c) 2019 Alchitry
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*****************************************************************************/
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module hdmi_encoder #(
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PCLK_DIV = 1 : PCLK_DIV >= 1 && PCLK_DIV < 12,
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Y_RES = 720 : Y_RES > 0,
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X_RES = 1280 : X_RES > 0,
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Y_FRAME = 750 : Y_FRAME >= Y_RES + 15,
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X_FRAME = 1667 : X_FRAME >= X_RES + 30
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)(
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input clk, // clock
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input rst, // reset
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output pclk,
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output tmds[4],
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output tmdsb[4],
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output active,
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output x[12],
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output y[11],
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input red[8],
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input green[8],
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input blue[8]
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) {
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sig clkfbin;
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xil_PLL_BASE pll_oserdes (
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#CLKIN_PERIOD(10),
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#CLKFBOUT_MULT(10), //set VCO to 10x of CLKIN
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#CLKOUT0_DIVIDE(1 * PCLK_DIV),
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#CLKOUT1_DIVIDE(10 * PCLK_DIV),
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#CLKOUT2_DIVIDE(5 * PCLK_DIV),
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#COMPENSATION("SOURCE_SYNCHRONOUS"),
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.CLKFBIN(clkfbin),
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.CLKIN(clk),
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.RST(0)
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);
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xil_BUFG clkfb_buf (.I(pll_oserdes.CLKFBOUT));
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always clkfbin = clkfb_buf.O;
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xil_BUFG pclkx2_buf (.I(pll_oserdes.CLKOUT2));
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xil_BUFG pclk_buf(.I(pll_oserdes.CLKOUT1));
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xil_BUFPLL ioclk_buf (
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#DIVIDE(5),
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.PLLIN(pll_oserdes.CLKOUT0),
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.GCLK(pclkx2_buf.O),
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.LOCKED(pll_oserdes.LOCKED)
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);
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.clk(pclk_buf.O) {
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.rst(rst) {
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dff ctrX[12];
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dff ctrY[11];
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}
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}
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sig hSync, vSync, drawArea;
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dvi_encoder dvi (
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.pclk(pclk_buf.O),
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.pclkx2(pclkx2_buf.O),
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.pclkx10(ioclk_buf.IOCLK),
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.strobe(ioclk_buf.SERDESSTROBE),
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.rst(~ioclk_buf.LOCK),
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.blue(blue),
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.green(green),
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.red(red),
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.hsync(hSync),
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.vsync(vSync),
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.de(drawArea)
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);
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always {
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ctrX.d = (ctrX.q == X_FRAME-1) ? 0 : ctrX.q + 1;
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if (ctrX.q == X_FRAME-1)
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ctrY.d = (ctrY.q == Y_FRAME-1) ? 0 : ctrY.q + 1;
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pclk = pclk_buf.O;
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hSync = (ctrX.q >= X_RES + 10) && (ctrX.q < X_RES + 20);
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vSync = (ctrY.q >= Y_RES + 10) && (ctrY.q < Y_RES + 12);
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drawArea = (ctrX.q < X_RES) && (ctrY.q < Y_RES);
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active = drawArea;
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x = ctrX.q;
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y = ctrY.q;
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tmds = dvi.tmds;
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tmdsb = dvi.tmdsb;
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}
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} |