用查表法实现数控振荡器的ASIC设计  

A Method for Designing Numerical Controlled Oscillator

作　　者：欧阳雪[1] 邹文英[1] 

机构地区：[1]中国电子科技集团公司第58研究所,江苏无锡214035

出　　处：《电子与封装》2012年第8期13-15,共3页Electronics & Packaging

摘　　要：介绍了一种用查表法实现数控振荡器的专用集成电路设计方法,主要部件分为频率控制字寄存器、相位控制字寄存器、累加器、加法器、锁存器等。该电路具有频率分辨率高、频率变化速度快、相位可连续线性变化和生成的正/余弦信号正交特性好等特点,波形发生器存储量大、读取速度快。采用正向全定制设计存储器,嵌入片内集成,并引入流水线结构,设计出高速、高精度的数控振荡器。电路结构简单,可靠性高,该设计采用0.5μm单层多晶三层铝的CMOS工艺成功加工,在数控振荡器的传统设计方法上提高了电路精度和频率。This article relates to a method for designing high-speed and very precise resolution Numerical Controlled Oscillator. It includes address select logic block, phase buffer registers block, phase registers block, phase accumulator block and sine lookup table block. It has remarkable features such as high frequency resolution, high speed of frequency change, constant line change of phase amplitude, digital sine or cosine functions of very precise frequency and high speed access memory. Some special skills, such as ROM in chip, pipe-line technology are used in this design, and the device was produced by 0.5um SPDM technology process successfully.

关 键 词：数控震荡器 频率控制字 相位控制字 流水线 

分 类 号：TN402[电子电信—微电子学与固体电子学]