針對(duì)傳統(tǒng)集成電路（ASIC）功能固定、升級(jí)困難等缺點(diǎn)，利用FPGA實(shí)現(xiàn)了擴(kuò)頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實(shí)現(xiàn)NCO模塊，在下變頻模塊調(diào)用了硬核乘法器并引入CIC濾波器進(jìn)行低通濾波，給出了DQPSK解調(diào)的原理和實(shí)現(xiàn)方法，推導(dǎo)出一種簡(jiǎn)便的引入?仔/4固定相移的實(shí)現(xiàn)方法。采用模塊化的設(shè)計(jì)方法使用VHDL語(yǔ)言編寫出源程序，在Virtex-II Pro 開發(fā)板上成功實(shí)現(xiàn)了整個(gè)系統(tǒng)。測(cè)試結(jié)果表明該系統(tǒng)正確實(shí)現(xiàn)了STEL-2000A的核心功能。
Abstract:
To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation detail of the demodulation of DQPSK, and derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
8051參考設(shè)計(jì)，與其他8051的免費(fèi)IP相比，文檔相對(duì)較全，Oregano System 提供
This is version 1.3 of the MC8051 IP core.
September 2002: Oregano Systems - Design & Consulting GesmbH
Change history:
- Improved tb_mc8051_siu_sim.vhd to verify duplex operation.
- Corrected problem with duplex operation in file
mc8051_siu_rtl.vhd
基于Altera公司FPGA芯片EP2C8Q208，嵌入MC8051 IP Core，用C語(yǔ)言對(duì)MC8051 IP Core進(jìn)行編程，以其作為控制核心，實(shí)現(xiàn)系統(tǒng)控制。在FPGA芯片中，利用Verilog HDL語(yǔ)言進(jìn)行編程，設(shè)計(jì)了以MC8051 IP Core為核心的控制模塊、計(jì)數(shù)模塊、鎖存模塊和LCD顯示模塊等幾部分，實(shí)現(xiàn)了頻率的自動(dòng)測(cè)量，測(cè)量范圍為0.1Hz~50MHz，測(cè)量誤差0.01%。并實(shí)現(xiàn)測(cè)頻率、周期、占空比等功能。
針對(duì)傳統(tǒng)集成電路（ASIC）功能固定、升級(jí)困難等缺點(diǎn)，利用FPGA實(shí)現(xiàn)了擴(kuò)頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實(shí)現(xiàn)NCO模塊，在下變頻模塊調(diào)用了硬核乘法器并引入CIC濾波器進(jìn)行低通濾波，給出了DQPSK解調(diào)的原理和實(shí)現(xiàn)方法，推導(dǎo)出一種簡(jiǎn)便的引入?仔/4固定相移的實(shí)現(xiàn)方法。采用模塊化的設(shè)計(jì)方法使用VHDL語(yǔ)言編寫出源程序，在Virtex-II Pro 開發(fā)板上成功實(shí)現(xiàn)了整個(gè)系統(tǒng)。測(cè)試結(jié)果表明該系統(tǒng)正確實(shí)現(xiàn)了STEL-2000A的核心功能。
Abstract:
To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation detail of the demodulation of DQPSK, and derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
8051參考設(shè)計(jì)，與其他8051的免費(fèi)IP相比，文檔相對(duì)較全，Oregano System 提供
This is version 1.3 of the MC8051 IP core.
September 2002: Oregano Systems - Design & Consulting GesmbH
Change history:
- Improved tb_mc8051_siu_sim.vhd to verify duplex operation.
- Corrected problem with duplex operation in file
mc8051_siu_rtl.vhd
