DSP芯片中浮点加法器LOD电路的设计

A Design of LOD for DSP Floating-Point Adder

DSP芯片中浮点加法器的速度制约着整个芯片的工作速度,浮点加法器中LOD电路的速度又是浮点加法器工作速度的瓶颈。因此,我们可以通过对LOD电路的改进,来提高整个DSP芯片的工作性能。我们从LOD的组成结构和逻辑两个方面进行设计,实现了一种快速、高效的LOD电路。它针对处理的数据格式为TMS320C3X扩展精度浮点数据格式。

The speed of floating-point adder is important factor for DSP performance.The speed of LOD is key factor for float-ing-point adder performance.So,in order to improve the speed of DSP,we can use the way that improve the speed of LOD.Through the structure and logical designing,we get a high-speed and effective LOD circuit,which applied in floating-point adder.The TMS320C3X Extended-Precision Floating-Point Format is used by this LOD design.