目的给出基于DA算法的二维离散余弦逆变换(2-D IDCT)的ASIC设计. 方法设计中一维IDCT算法采用基于Chen的快速1-D IDCT算法. 为了减少面积、加快速度,设计中乘法累加电路是采用基于DA算法而实现的. 结果与结论完成了整个系统的VHDL仿真、综合及版图设计. 与目前国际上较优秀的设计相比,本设计拥有最好的时序特性,设计总体结果较优.“,”Aim To present an ASIC design of DA-based 2-D IDCT. Methods In the design of 1-D IDCT is utilized a Chen-based fast IDCT algorithm, and multiplier accumulators based on distributed algorithm contributes in reducing the hardware amount and in enhancing the speed performance. Results and Conclusion VHDL simulation, synthesis and layout design of system are implemented. This 2-D IDCT ASIC design owns best timing performance when compared with other better designs internationally. Results of design prove to be excellent.