diff --git a/rtl/frame_types.sv b/rtl/frame_types.sv
new file mode 100644
index 0000000..6cfd16b
--- /dev/null
+++ b/rtl/frame_types.sv
@@ -0,0 +1,5 @@
+package frame_types;
+  typedef enum logic [1:0] {WAIT_START, COLLECT, WAIT_END, DROP} state_t;
+  localparam logic [7:0] START_BYTE = 8'h7e;
+  localparam logic [7:0] END_BYTE = 8'h7f;
+endpackage