interface mcureg_if(input clk,input rstn); 

  //input port
  logic  [3  :0] wrmask			;
  logic  [2  :0] fb_st_info		;
  logic  [31 :0] run_time		;
  logic  [31 :0] instr_num		;
  logic  [31 :0] mcu_param   [3:0]      ;          // MCU parameter 0~3

  //output port
  logic  [31 :0] mcu_result  [3:0]      ;          // MCU result 0~3
  logic  [31 :0] mcu_cwfr    [3:0]      ;          // Carrier frequency ctrl word 0~3
  logic  [31 :0] mcu_gapr    [7:0]      ;          // Carrier phase     ctrl word 0~3
  logic  [31 :0] mcu_ampr    [3:0]      ;          // Carrier Amplitude           0~3
  logic  [31 :0] mcu_baisr   [3:0]      ;          // Carrier Bais                0~3
  logic  [1  :0] mcu_intp_sel           ;  	   //2'b00:HBF;2'b01:Nearest-neighbor interpolator;
  logic          mcu_nco_pha_clr	;
  logic  [15 :0] mcu_rz_pha		;


  

endinterface : mcureg_if