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技术教程 UCC28070 300W Interleaved PFC Pre-Regulator Design Review
In higher power applications to utilize the full line power and reduce line currentharmonics
模拟电子 数字预失真(DPD)算法研发工具和验证方案
在无线通信系统全面进入3G并开始迈向 4G的过程中,使用数字预失真技术(Digital Pre-distortion,以下简称DPD)对发射机的功放进行线性化是一门关键技术。功率放大器是通信系统中影响系统性能和覆盖范围的关键部件,非线性是功放的固有特性。非线性会引起频谱增长(spectral re-growth),从而造成邻道干扰,使带外杂散达不到 ...
电源技术 ASC8512-CN两节锂电充电芯片
两节锂电充电IC-ASC8512 ASC8512 为开关型两节锂聚合物电池充电管理芯片,非常适合于便携式设备的充电管理应用。ASC8512 集内置功率MOSFET、高精度电压和电流调节器、预充、充电状态指示和充电截止等功能于一体,采用TSSOP-14、SSOP-14两种封装形式。ASC8512对电池充电分为三个阶段:预充(Pre-charge)、恒流(CC/Constan ...
电源技术 LTC6994参考设计及PCB布线规则
Demonstration circuit 1562A is an engineering toolto design and evaluate the LTC699X-X family ofTimerBlox circuits. The center section of the boardcontains a pre-configured TimerBlox function.DC1562A comes in twelve timing function variationsas outlined in Table 1.Surrounding the center board is a ...
单片机编程 Mini2440启动代码详解
BIT_SELFREFRESH EQU (1<<22) ;定义SDRAM自刷新标志位
16
17 ;Pre-defined constants 预定义6种工作模式
18 USERMODE EQU 0x10 ;用户模式
19 FIQMODE EQU 0x11 ;快速中断模式
20 IRQMODE EQU 0x12 ;中断模式
21 SVCMODE EQU 0x13 ;监管模式
22 ABORTMODE EQU 0x17 ;异常中断模式
23 UNDEFMODE EQU 0x1b ;未定义模 ...
单片机编程 FREERTOS的官方移植文档
FeaturesThe following standard features are provided.&#8226; Choice of RTOS scheduling policy1. Pre-emptive:Always runs the highest available task. Tasks of identical priorityshare CPU time (fully pre-emptive with round robin time slicing).2. Cooperative:Context switches only occur if a task blocks, ...
教程资料 Virtex-5 GTP Transceiver Wizar
The LogiCORE&#8482; GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex&#8482;-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standa ...
无线通信 多径信道下OFDM系统定时同步算法
文中在pre-FFT定时同步算法的基础上提出一个新的定时同步算法及其改进算法,该算法利用规则集对相关函数和导函数优化的方法得以进一步减小估计方差,本文在给出其推导过程的基础上给出了仿真结果,并与相关算法进行比较,结果表明新算法的定时估计精度较高且具有一定的鲁棒性。
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开发工具 单片机12864液晶时钟显示程序
12864液晶时钟显示程序
LCD 地址变量
;**************变量的定义*****************
RS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BIT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; P2.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;LCD数据/命令选择端(H/L)
RW&nbsp;&nb ...
可编程逻辑 Virtex-5 GTP Transceiver Wizar
The LogiCORE&#8482; GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex&#8482;-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standa ...