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如今IC設(shè)計(jì)進(jìn)入了SOC(System-on-chip)設(shè)計(jì)時(shí)代。SOC是指在單一芯片上集成了微控制器、數(shù)字信號(hào)處理器、存儲(chǔ)器、I/O接口等，可以實(shí)現(xiàn)信號(hào)采集、轉(zhuǎn)換、存儲(chǔ)、處理等功能的芯片。SOC設(shè)計(jì)是基于IP可重用性的設(shè)計(jì)過(guò)程。現(xiàn)在已有不少公司成功地開(kāi)發(fā)了各種SOC總線規(guī)范，以便于IP核的可復(fù)用性設(shè)計(jì)。其中，ARM公司開(kāi)發(fā)的AMBA(Advanced Microcontroller Bus Arehitecture)規(guī)范已經(jīng)成為嵌入式應(yīng)用的行業(yè)標(biāo)準(zhǔn)。嵌入式SOC芯片廣泛應(yīng)用于消費(fèi)電子產(chǎn)品中，近年來(lái)隨著彩屏手機(jī)、PDA等移動(dòng)終端的普及，液晶電視等平板顯示器件的推廣，液晶顯示器已經(jīng)逐漸取代CRT成為主流的顯示器件。LCD Driver IC作為液晶顯示器的重要部件，需求量也日益增大。嵌入式液晶顯示系統(tǒng)的設(shè)計(jì)是當(dāng)今SOC設(shè)計(jì)中不可缺少的部分，而基于AMBA總線規(guī)范的LCD顯示系統(tǒng)更是具備良好的性能和較大的潛力。 本文提出了一種基于AMBA總線規(guī)范的彩色TFT-LCD數(shù)字圖像顯示解決方案，硬件設(shè)計(jì)上包括APB存儲(chǔ)接口模塊、LCD控制模塊，并用VHDL硬件描述語(yǔ)言進(jìn)行了功能仿真，采用Mentor公司Modelsim5.8完成了系統(tǒng)功能驗(yàn)證；軟件設(shè)計(jì)上完成了基于SAMSUNG公司S6D0110 TFT-LCD驅(qū)動(dòng)芯片的測(cè)試程序的編寫(xiě)和系統(tǒng)測(cè)試。本設(shè)計(jì)不需要掌握TFT-LCD內(nèi)部構(gòu)造，復(fù)雜的內(nèi)部驅(qū)動(dòng)原理，只需要掌握AMBA總線規(guī)范和LCD的MPU并行接口時(shí)序，采用本課題設(shè)計(jì)出的LCD顯示控制模塊簡(jiǎn)單實(shí)用，便于推廣應(yīng)用。 本課題基于Xilinx公司的VirtexⅡ FF1152 PROTO開(kāi)發(fā)平臺(tái)完成了軟件調(diào)試，實(shí)現(xiàn)了TFT-LCD圖像顯示。調(diào)試結(jié)果表明硬件和軟件設(shè)計(jì)正確且取得了較為滿(mǎn)意的結(jié)果。
標(biāo)簽：
TFTLCD
顯示系統(tǒng)
上傳時(shí)間：
2013-06-02
上傳用戶(hù)：小楓殘?jiān)?/p>
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信號(hào)與信息處理是信息科學(xué)中近幾年來(lái)發(fā)展最為迅速的學(xué)科之一,隨著片上系統(tǒng)(SOC,System On Chip)時(shí)代的到來(lái),FPGA正處于革命性數(shù)字信號(hào)處理的前沿。基于FPGA的設(shè)計(jì)可以在系統(tǒng)可再編程及在系統(tǒng)調(diào)試,具有吞吐量高,能夠更好地防止授權(quán)復(fù)制、元器件和開(kāi)發(fā)成本進(jìn)一步降低、開(kāi)發(fā)時(shí)間也大大縮短等優(yōu)點(diǎn)。然而,FPGA器件是基于SRAM結(jié)構(gòu)的編程工藝,掉電后編程信息立即丟失,每次加電時(shí),配置數(shù)據(jù)都必須重新下載,并且器件支持多種配置方式,所以研究FPGA器件的配置方案在FPGA系統(tǒng)設(shè)計(jì)中具有極其重要的價(jià)值,這也給用于可編程邏輯器件編程的配置接口電路和實(shí)驗(yàn)開(kāi)發(fā)設(shè)備提出了更高的要求。 本論文基于IEEE1149.1標(biāo)準(zhǔn)和USB2.0技術(shù),完成了FPGA配置接口電路及實(shí)驗(yàn)開(kāi)發(fā)板的設(shè)計(jì)與實(shí)現(xiàn)。作者在充分理解IEEE1149.1標(biāo)準(zhǔn)和USB技術(shù)原理的基礎(chǔ)上,針對(duì)Altcra公司專(zhuān)用的USB數(shù)據(jù)配置電纜USB-Blaster,對(duì)其內(nèi)部工作原理及工作時(shí)序進(jìn)行測(cè)試與詳細(xì)分析,完成了基于USB配置接口的FPGA芯片開(kāi)發(fā)實(shí)驗(yàn)電路的完整軟硬件設(shè)計(jì)及功能時(shí)序仿真。作者最后進(jìn)行了軟硬件調(diào)試,完成測(cè)試與驗(yàn)證,實(shí)現(xiàn)了對(duì)Altera系列PLD的配置功能及實(shí)驗(yàn)開(kāi)發(fā)板的功能。 本文討論的USB下載接口電路被驗(yàn)證能在Altera的QuartusII開(kāi)發(fā)環(huán)境下直接使用,無(wú)須在主機(jī)端另行設(shè)計(jì)通信軟件,其兼容性較現(xiàn)有設(shè)計(jì)有所提高。由于PLD(Programmable Logic Device)廠商對(duì)其知識(shí)產(chǎn)權(quán)嚴(yán)格保密,使得基于USB接口的配置電路應(yīng)用受到很大限制,同時(shí)也加大了自行對(duì)其進(jìn)行開(kāi)發(fā)設(shè)計(jì)的難度。 與傳統(tǒng)的基于PC并口的下載接口電路相比,本設(shè)計(jì)的基于USB下載接口電路及FPGA實(shí)驗(yàn)開(kāi)發(fā)板具有更高的編程下載速率、支持熱插拔、體積小、便于攜帶、降低對(duì)PC硬件傷害,且具備其它下載接口電路不具備的SignalTapII嵌入式邏輯分析儀和調(diào)試NiosII嵌入式軟核處理器等明顯優(yōu)勢(shì)。從成本來(lái)看,本設(shè)計(jì)的USB配置接口電路及FPGA實(shí)驗(yàn)開(kāi)發(fā)板與其同類(lèi)產(chǎn)品相比有較強(qiáng)的競(jìng)爭(zhēng)力。
標(biāo)簽：
實(shí)驗(yàn)
評(píng)估板
上傳時(shí)間：
2013-06-07
上傳用戶(hù)：2525775
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特點(diǎn)： 精確度0.1%滿(mǎn)刻度 可作各式數(shù)學(xué)演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類(lèi)比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(input/output/power) 寬范圍交直流兩用電源設(shè)計(jì) 尺寸小,穩(wěn)定性高
標(biāo)簽：
微電腦
數(shù)學(xué)演算
隔離傳送器
上傳時(shí)間：
2014-12-23
上傳用戶(hù)：ydd3625
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Radio Frequency Integrated Circuit Design
I enjoyed reading this book for a number of reasons. One reason is that itaddresses high-speed analog design in the context of microwave issues. This isan advanced-level book, which should follow courses in basic circuits andtransmission lines. Most analog integrated circuit designers in the past workedon applications at low enough frequency that microwave issues did not arise.As a consequence, they were adept at lumped parameter circuits and often notcomfortable with circuits where waves travel in space. However, in order todesign radio frequency (RF) communications integrated circuits (IC) in thegigahertz range, one must deal with transmission lines at chip interfaces andwhere interconnections on chip are far apart. Also, impedance matching isaddressed, which is a topic that arises most often in microwave circuits. In mycareer, there has been a gap in comprehension between analog low-frequencydesigners and microwave designers. Often, similar issues were dealt with in twodifferent languages. Although this book is more firmly based in lumped-elementanalog circuit design, it is nice to see that microwave knowledge is brought inwhere necessary.Too many analog circuit books in the past have concentrated first on thecircuit side rather than on basic theory behind their application in communications.The circuits usually used have evolved through experience, without asatisfying intellectual theme in describing them. Why a given circuit works bestcan be subtle, and often these circuits are chosen only through experience. Forthis reason, I am happy that the book begins first with topics that require anintellectual approach—noise, linearity and filtering, and technology issues. Iam particularly happy with how linearity is introduced (power series). In therest of the book it is then shown, with specific circuits and numerical examples,how linearity and noise issues arise.
標(biāo)簽：
Rogers
Radio
John
Freq
上傳時(shí)間：
2014-12-23
上傳用戶(hù)：han_zh
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特點(diǎn)(FEATURES) 精確度0.1%滿(mǎn)刻度 (Accuracy 0.1%F.S.) 可作各式數(shù)學(xué)演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A| (Math functioA+B/A-B/AxB/A/B/A&B(Hi&Lo)/|A|/etc.....) 16 BIT 類(lèi)比輸出功能(16 bit DAC isolating analog output function) 輸入/輸出1/輸出2絕緣耐壓2仟伏特/1分鐘(Dielectric strength 2KVac/1min. (input/output1/output2/power)) 寬范圍交直流兩用電源設(shè)計(jì)(Wide input range for auxiliary power) 尺寸小,穩(wěn)定性高(Dimension small and High stability)
標(biāo)簽：
微電腦
數(shù)學(xué)演算
輸出
隔離傳送器
上傳時(shí)間：
2013-11-24
上傳用戶(hù)：541657925
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The CN3052A is a complete constant-current /constant voltage linear charger for single cell Li-ion and Li Polymer rechargeable batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode.
標(biāo)簽：
3052A
3052
CN
鋰離子電池
上傳時(shí)間：
2013-11-10
上傳用戶(hù)：子虛烏有
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a_bit equ 20h ;個(gè)位數(shù)存放處
b_bit equ 21h ;十位數(shù)存放處
temp equ 22h ;計(jì)數(shù)器寄存器
star: mov temp,#0 ;初始化計(jì)數(shù)器
stlop: acall display
inc temp
mov a,temp
cjne a,#100,next ;=100重來(lái)
mov temp,#0
next: ljmp stlop
;顯示子程序
display: mov a,temp ;將temp中的十六進(jìn)制數(shù)轉(zhuǎn)換成10進(jìn)制
mov b,#10 ;10進(jìn)制/10=10進(jìn)制
div ab
mov b_bit,a ;十位在a
mov a_bit,b ;個(gè)位在b
mov dptr,#numtab ;指定查表啟始地址
mov r0,#4
dpl1: mov r1,#250 ;顯示1000次
dplop: mov a,a_bit ;取個(gè)位數(shù)
MOVC A,@A+DPTR ;查個(gè)位數(shù)的7段代碼
mov p0,a ;送出個(gè)位的7段代碼
標(biāo)簽：
直接驅(qū)動(dòng)
數(shù)碼管
計(jì)數(shù)器
程序
上傳時(shí)間：
2013-11-06
上傳用戶(hù)：lx9076
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MG3500SoC是支持H.264高清編解碼器的片上系統(tǒng)，內(nèi)部集成一個(gè)嵌入式ARM926處理器，支持高清H.264編解碼、MPEG鄄2解碼和JPEG編解碼。介紹了MG3500SoC的主要性能特點(diǎn)、引腳排列、主要接口功能及在DVR上的應(yīng)用，以及MG3500SoC及其周?chē)骷挠布O(shè)計(jì)，提出了在設(shè)計(jì)中應(yīng)注意的問(wèn)題。
Abstract:
The MG3500System-on-Chip（SoC）is high definition（HD）H.264codec,including ARM926-EJ processor，H.264encoder/decoder，MPEG2decoder and JPEG/MJPEG encoder/decoder.The features,pin assignments，interfaces and the typical application of MG3500in DVR are introduced in this paper.The application hardware circuit between the MG3500SoC and peripheral device are given,the questions which the syetem design needs to pay attention are explained.
標(biāo)簽：
3500
264
MG
編解碼器
上傳時(shí)間：
2013-11-12
上傳用戶(hù)：elinuxzj
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1 FEATURES· Single chip LCD controller/driver· 1 or 2-line display of up to 24 characters per line, or2 or 4 lines of up to 12 characters per line· 5 ′ 7 character format plus cursor; 5 ′ 8 for kana(Japanese syllabary) and user defined symbols· On-chip:– generation of LCD supply voltage (external supplyalso possible)– generation of intermediate LCD bias voltages– oscillator requires no external components (externalclock also possible)· Display data RAM: 80 characters· Character generator ROM: 240 characters· Character generator RAM: 16 characters· 4 or 8-bit parallel bus or 2-wire I2C-bus interface· CMOS/TTL compatible· 32 row, 60 column outputs· MUX rates 1 : 32 and 1 : 16· Uses common 11 code instruction set· Logic supply voltage range, VDD - VSS: 2.5 to 6 V· Display supply voltage range, VDD - VLCD: 3.5 to 9 V· Low power consumption· I2C-bus address: 011101 SA0.
標(biāo)簽：
2116
PCF
LCD
驅(qū)動(dòng)器芯片
上傳時(shí)間：
2013-11-08
上傳用戶(hù)：laozhanshi111
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The CAT93C46 is a 1 kb Serial EEPROM memory device which isconfigured as either 64 registers of 16 bits (ORG pin at VCC) or 128registers of 8 bits (ORG pin at GND). Each register can be written (orread) serially by using the DI (or DO) pin. The CAT93C46 features aself−timed internal write with auto−clear. On−chip Power−On Resetcircuit protects the internal logic against powering up in the wrongstate.
標(biāo)簽：
CAT
93C
C46
93
上傳時(shí)間：
2013-11-20
上傳用戶(hù)：ynzfm
