ID |
原文 |
译文 |
40796 |
应用直接编程接口技术,实现通用验证方法学和C语言程序的交互通信。该方法不仅降低了通用验证方法学使用的复杂度,而且使得C语言测试用例可以在不同的测试层次中移植重用, |
The direct programming interface(DPI) technology is applied to realize the interactive communication between universal verification methodology and C-language program, which not only reduces the complexity of using universal verification methodology, but also makes C-language test cases portable and reused in different test levels, |
40797 |
例如C测试代码可以从模块级到片上系统级的重用。 |
for example, C-test code can be reused from module level to system on chip level. |
40798 |
以SPI控制器验证本方案,搭建其UVM验证平台,编写大量的UVM和C测试用例,使其功能覆盖率达到100%,并通过虚拟处理器方案保证C测试用例从模块级复用到系统级的可行性。 |
The SPI controller was used to verify the scheme, the UVM verification platform was built, a large number of UVM and C test cases were written to achieve 100% functional coverage, and the feasibility of C test cases being reused from module level to system level was guaranteedthrough the virtual processor scheme. |
40799 |
实验过程中激励开发简单且调试方便,可以实现UVM环境和测试用例的重用,从而提高片上系统的UVM验证重用性,达到缩短芯片开发时间的目的。 |
During the experiment, the incentive development is simple and debugging is convenient.It can realize the reuse of UVM environment and test cases, to improve the reusability of UVM verification of system on chip and shorten the development time of chip. |
40800 |
提出了一种新型带隙基准结构, |
A solution applied to bandgap reference topology was proposed. |
40801 |
该电路结构用于在大范围电源电压下产生高精度与温度成正比的电流源。 |
It aimed to solve current mode bandgap reference circuit that can produce a current proportional to absolute temperature with a wide supply voltage. |
40802 |
通过将三极管作为运放的输入端,预先产生一个与温度成正比的电压差,来降低运算放大器失调电压的影响,同时降低带隙基准电路对电源电压的要求。 |
With bipolars acting as the input transistors and producing a PTAT voltage, this circuit can reduce the offset voltage of operational amplifiers, furthermore operate with a low supply voltage. |
40803 |
通过0.18μm CMOS工艺搭建电路进行功能与性能的仿真验证,仿真结果表明该电路在电源电压从1.1V变化到4.8V,输出为2μA时,电流偏差不到2nA,电源抑制比达到100dB。 |
This circuit was designed with a 0.18μm 3.3 V CMOS process.The simulation results showed that in a supply voltage range of 1.1 ~ 4.8 V, the current is about 2μA with maxim 2 nA error and 100 dB PSRR. |
40804 |
在用于温度测量时可以显著减小由电源电压变化引起的误差。 |
The circuit can be used to bias temperature measure circuit and significantly reduce the effect of the supply voltage variation. |
40805 |
精度在14bit以上的Sigma-Delta调制器均采用高阶结构,从而存在复杂性较高的问题。 |
Sigma-Delta modulators with accuracy above 14 bit all adopt high order structure, which leads to high complexity problem. |