嵌入式FPU微指令控制模塊的設(shè)計(jì)與實(shí)現(xiàn)

本文主要討論了32 位FPU（Floating Point Unit）中的控制模塊的設(shè)計(jì)與實(shí)現(xiàn)，在設(shè)
計(jì)中控制部分采用了微程序的設(shè)計(jì)思想，介紹了微程序控制設(shè)計(jì)的基本構(gòu)成電路和工作特點(diǎn)，在設(shè)計(jì)中采用了諸如：多入口地址等提高微程序控制能力的方法。為了提高電路的性能，使用了門級(jí)設(shè)計(jì)。通過(guò)布局布線后的結(jié)果看出，該設(shè)計(jì)規(guī)模小、速度高，非常適合嵌入式應(yīng)用。
關(guān)鍵詞：FPU 設(shè)計(jì)；微程序控制；IP 設(shè)計(jì)

Abstrat: This paper mainly discusses the design and implementation of controlling module in 32 bit embedded FPU, and introduces the architecture of controller and feature of the current. The design is implemented by micro program method. In the design, there are many techniques used such as: multi-address entrance. In order to improving the performance of it, the design is implemented by gate level. Finally, it is shown that the controller of the FPU is much suitable for embedded application due to its small area and hign speed from its layout.
Key words: Floating point unit( FPU ); Micro-instruction; IP