added basic design directory structure

1 files changed, 19 insertions, 0 deletions

diff --git a/src/tone_rtl.vhd b/src/tone_rtl.vhd
new file mode 100644
index 0000000..815ebb8
--- /dev/null
+++ b/src/tone_rtl.vhd
@@ -0,0 +1,19 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity tone is
+  port (clk        : in  std_ulogic;
+        rst_n      : in  std_ulogic;
+        switches_i : in  std_ulogic_vector(9 downto 0);
+        dv_i       : in  std_ulogic;
+        audio_i    : in  std_ulogic_vector(15 downto 0);
+        audio_o    : out std_ulogic_vector(15 downto 0));
+end entity;
+
+architecture rtl of tone is
+  
+begin
+
+audio_o <= audio_i when rising_edge(clk) and dv_i = '1';
+
+end architecture rtl;