隨著手持式裝置的普及化，對於各種多媒體之使用需求也快速成長，為了滿足各式多媒體應用之運算需求，傳統上採用提高系統之操作頻率以增加運算速度，但是伴隨而來的是熱能管理和功率消耗的問題。為了克服過高的功率消耗問題，多核心系統成為近年來最為普遍之架構設計。其中，處理單元成為晶片設計上的重要環節。然而，設計一個新的處理器和它的工具鏈往往耗時且難以符合產品之設計週期，因此本篇將利用LISATek的自動化設計方法在設計初期能夠快速且彈性地設計PAC-Lite處理單元，並且將其整合至3DCIS影像處理之多核心系統中，藉此在電子系統層級進行軟體開發和架構探索而達到系統最佳化之目的，未來也可利用此探索結果有效地幫助實現低功耗多核心系統之硬體架構。

As the handheld devices become more and more popular, the demand for various modern multimedia applications is increasing rapidly. To satisfy the high computation power for these applications, design with higher operating frequency is applied by traditional methods. But it comes with the problems on thermal management and power consumption. Multicore system is a popular solution to increase the computation power with low power consumption. The most important part of multicore system is the design of processing element. Traditionally, it takes too much time to develop a processor and tool chains and is difficult to meet the development cycle of products. In this paper, we develop a processing element for multicore system based on the LISATek automation design flow. It provides a fast and flexible method for us to design a PAC-Lite processing element at early design stage. Based on the flow, we apply the PAC-Lite on a 3D CIS system for image processing applications at ESL. It can support fast software development and architecture exploration for system optimization. The results of exploration will help us to implement the low-power multicore system in the future.