fix: encoding issues, generator explicit default state

rtl/generator/src/generator.sv

@@ -27,6 +27,14 @@ module generator
 
     logic enable, synced;
 
+    initial begin
+        cnt_pulse_period = '0;
+        cnt_pulse_num    = '0;
+        enable           =  0;
+        synced           =  0;
+        dac_out          = ZERO_LEVEL;
+    end
+
     always @(posedge clk_dac) begin
         if (rst) begin
             pulse_height_reg   <=  ZERO_LEVEL;