参数资料
| 型号： | IP-NCO |
| 厂商： | Altera |
| 文件页数： | 5/54页 |
| 文件大小： | 0K |
| 描述： | IP NCO COMPILER |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | MegaCore |
| 功能： | 数控振荡器编译器 |
| 许可证： | 初始许可证 |
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1. About This MegaCore Function
This document describes the Altera ? NCO MegaCore ? function. The Altera NCO
MegaCore function generates numerically controlled oscillators (NCOs) customized
for Altera devices.
You can use the IP Toolbench interface to implement a variety of NCO architectures,
including ROM-based, CORDIC-based, and multiplier-based. IP Toolbench also
includes time and frequency domain graphs that dynamically display the
functionality of the NCO, based on your parameter settings.
A numerically controlled oscillator synthesizes a discrete-time, discrete-valued
representation of a sinusoidal waveform. Designers typically use NCOs in
communication systems. In such systems, they are used as quadrature carrier
generators in I-Q mixers, in which baseband data is modulated onto the orthogonal
carriers in one of a variety of ways.
Figure 1–1 shows an NCO used in a simple modulator system.
Figure 1–1. Simple Modulator
Constellation
Mapper
I
FIR
Filter
Q
cos(wt)
NCO
IF Signal
sin(wt)
FIR
Filter
Designers also use NCOs in all-digital phase-locked-loops for carrier synchronization
in communications receivers, or as standalone frequency shift keying (FSK) or phase
shift keying (PSK) modulators. In these applications, the phase or the frequency of the
output waveform varies directly according to an input data stream.
Features
The Altera NCO MegaCore function supports the following features:
■
■
■
Supports 32-bit precision for angle and magnitude
Source interface is compatible with the Avalon Interface Specification
IP functional simulation models for use in Altera-supported VHDL and Verilog
HDL simulators
November 2013
Altera Corporation
NCO MegaCore Function
User Guide
相关PDF资料 |
PDF描述 |
|---|---|
| IP-NIOS | IP NIOS II MEGACORE |
| IP-PCI/MT64 | IP PCI 64BIT MASTER/TARGET |
| IP-PCIE/8 | IP PCI EXPRESS, X8 |
| IP-POSPHY4 | IP POS-PHY L4 |
| IP-RIOPHY | IP RAPID I/O |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IP-NIOS | 功能描述:开发软件 Nios II MegaCore RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPO-002-VSF-LF | 制造商:PROXISTOR AB ELECTRONIC 功能描述:PROXIMITY SWITCH, PNP; Sensor Input:Inductive; Sensing Range Max:2mm; Supply Voltage DC Min:10V; Supply Voltage DC Max:30V; SVHC:No SVHC (19-Dec-2012); External Depth:10.5mm; External Length / Height:16.5mm; External Width:30mm; |
| IPOD TOUCH4-C-B | 制造商:Distributed By MCM 功能描述:Apple® iPod Black Touch 4th Gen Digitizer + Glass 制造商:Distributed By MCM 功能描述:APPLE IPOD TOUCH DIGITIZER BLACK |
| IPOD TOUCH4-C-W | 制造商:Distributed By MCM 功能描述:APPLE IPOD TOUCH DIGITIZER WHITE 制造商:Distributed By MCM 功能描述:Apple® iPod White Touch 4th Gen Digitizer + Glass |
| IPP015N04N G | 功能描述:MOSFET OptiMOS 3 PWR TRANST 40V 120A RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
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