这一段verilog代码怎么解读？

////////////////////// Config Control ////////////////////////////// Internal Registers/Wires//reg [23:0] mI2C_DATA; //I2C Datawire mI2C_END; //I2C Transfer Endwire mI2C_ACK; //I2C Transfer ACK//reg [7:0] LUT_INDEX; //LUT Indexreg [1:0] mSetup_ST; //State Machinereg mI2C_GO; //I2C Transfer Startreg mI2C_WR; //I2C Write / Read Dataalways@(posedge iCLK or negedge iRST_N) //25MHz mI2C_CTRL_CLKbegin if(!iRST_N) begin Config_Done <= 0; LUT_INDEX <= 0; mSetup_ST <= 0; mI2C_GO <= 0; mI2C_WR <= 0; end else if(i2c_negclk) begin if(LUT_INDEX < LUT_SIZE) begin Config_Done <= 0; case(mSetup_ST) 0: begin //IDLE State if(~mI2C_END) //END Transfer mSetup_ST <= 1; else //Transfe ing mSetup_ST <= 0; mI2C_GO <= 1; //Go Transfer if(LUT_INDEX < 8✀d2) mI2C_WR <= 0; //Read Data else mI2C_WR <= 1; //Write Data end 1: begin //Write data if(mI2C_END) begin mI2C_WR <= 0; mI2C_GO <= 0; if(~mI2C_ACK) //ACK ACTIVE mSetup_ST <= 2; //INDEX ++ else mSetup_ST <= 0; //Repeat Transfer end end 2: begin //Address Add LUT_INDEX <= LUT_INDEX + 8✀d1; mSetup_ST <= 0; mI2C_GO <= 0; mI2C_WR <= 0; end endcase end else begin Config_Done <= 1✀b1; LUT_INDEX <= LUT_INDEX; mSetup_ST <= 0; mI2C_GO <= 0; mI2C_WR <= 0; end endend