【正文】 address of data in the routing address switch is widely used. In addition to block RAM, still can place the LUT flexibly FPGA RAM and 畢業(yè)設(shè)計（論文）專用紙 第 頁 18 ROM and configured structures such as FIFO. In practical application, the number of RAM chip internal pieces of choice chip is an important factor. Monolithic block RAM has a capacity of 18k bits, took the wide for 18 to bits, depth for 1024, and may, according to needs to change its position, but should satisfy harnessed two principles: first, the revised capacity (a wide depth) is not greater than 18k bit。 In order to apply munications bus and interface standards, many highend FPGA internal are integrated strings and transceiver (SERDES), can achieve dozens of Gbps speed of delivery. The highend product not only Xilinx pany has integrated Power PC series CPU, still embedded with DSP Core modules, its corresponding systemlevel design tools are EDK and Platform, according to this Studio forward Chip System (System on the concept of Chip cluster generator attempts. Through Miroblaze, Picoblaze PowerPC, such as the platform, can develop standards and its associated applications DSP . The FPGA design precautions： 畢業(yè)設(shè)計（論文）專用紙 第 頁 20 Whether you are a logical designers, hardware engineer or system engineer, or even with all these titles, as long as you in any kind of highspeed and more plex systems use agreement the FPGA, you will probably need to resolve device configuration, power management, IP integration, signal integrity and some of the other key design issues. However, you don39。 The fourth category is distributed wiring resources, used for proprietary clock and reset the control signal. In practice, designers don39。 x老師的熱心給予的完成畢業(yè)設(shè)計的動力， x老師的幫助使我客服了諸多困難，最終在老師的指導下我完成了畢業(yè)設(shè)計，再次我要深深的感謝她。 當然在設(shè)計過程中也遇見了不少自己解決不了的問題，對此我很感謝我的老師、同學們的幫助。這次畢業(yè)設(shè)計可以說是對四年的大學學習的總結(jié)。 畢業(yè)設(shè)計（論文）專用紙 第 頁 9 第 4 章 模擬仿真 年月日模塊仿真 該仿真圖顯示的是 09年 5月分的，由圖可以看出 5月分有 31天，當月份進入到下一個月的時候，日期 day則變?yōu)?1號，仿真結(jié)果無誤。這里不再多說。 畢業(yè)設(shè)計（論文）專用紙 第 頁 7 年月日模塊（ nyr2020） 日計數(shù)：日信號 qr[7:0]，日進位信號 clky，以及每月天數(shù) date。 如果 qfh5， qfl==9，則 qfh=qfh+1， qfl=0， carry1=0；如果 qfh5， qfl9，則 qfh=qfh，qfl=qfl+1， carry1=0。給予秒信號和進位信號一個初始值，令 {qmh,qml}=0,carry1=0。 系統(tǒng)設(shè)計圖 畢業(yè)設(shè)計（論文）專用紙 第 頁 4 圖 1 流程圖 圖 2 功能設(shè)計圖 畢業(yè)設(shè)計（論文）專用紙 第 頁 5 第 3 章 各功能模塊介紹 分頻模塊（ fenpin） 該模塊的主要功能是想得到一個時鐘頻率為 1Hz的一個脈沖，也就是說 想得到周期為 1秒的一個脈沖。 FPGA 簡介 FPGA 是現(xiàn)場可編程門陣列（ Field programmable gates array）的英文簡稱 ，是由可編程邏輯模塊組成的數(shù)字集成電路（ IC） ,這些邏輯 模塊之間用可配置的互聯(lián)資源。采用 FPGA 設(shè)計的萬年歷由于成本低，精度高，可靠性好 等優(yōu)點，使它有了非常廣闊的使用之處。每到新年，人們就會買來一本新的日歷，配上繪有圖畫的日歷牌掛在墻上，既是裝飾，又能指示年、月、日、星期等信息。 進入信息時代，時間觀念越來越重，但是老式的鐘表以及日歷等時間顯示工具已經(jīng)不太適合。各個模塊完成不同的任務(wù)，合在一起就構(gòu)成了萬年歷的系統(tǒng)電路設(shè)計。例如：在萬年歷上添加鬧鐘，同時顯示陰陽歷等。對此國內(nèi)外許多設(shè)計人員對其進行了大量的設(shè)計，有用單片機開發(fā)的，有用 FPGA 開發(fā)的。 數(shù)字 萬年歷 從原理上 講是一種典型的數(shù)字電路，其中包括了組合邏輯電路和時序電路。由于 FPGA 的設(shè)計成本低廉，修改方便，從而催生了的、許多富有創(chuàng)新意識的公司，這就意味著設(shè)計人員可以在基于 FPGA 的測試平臺上實現(xiàn)他們的軟件開發(fā)，而不需要承擔數(shù)額巨大的不可重現(xiàn)工程的成本或昂貴的開發(fā)工具。 畢業(yè)設(shè)計（論文）專用紙 第 頁 6 時間顯示調(diào)整模塊（ mux_4） 該模塊的功能是控制顯示器，決定顯示年月日還是時分秒。給予初始值： {qfh,qfl}=8’ h00,進位信號 carry1=0。amp。對于日信號，當 qr=date時，則令qr=1， clky=1；否則若日信號的十位與 date的十位相同且個位小于 date的個位，則十位不變，個位每個脈沖加 1（這里的秒沖有外界和內(nèi)部兩種，內(nèi)部脈沖來自時分秒模塊的輸出 cout）；若日信號十位小于 date的十位，但是個位相等，則令十位加 1，個位計為 0；若 日信號十位和個位均小于 date則令日信號十位不變，個位加 1。 譯碼器（ yimaqi） 譯碼器可以將輸入代碼的狀態(tài)翻譯成相應(yīng)的輸出信號，以高、低電平的形式在各自 畢業(yè)設(shè)計（論文）專用紙 第 頁 8 的輸出端口送出，以表示其意愿。與傳統(tǒng)紙質(zhì)的萬年歷相比 ,數(shù)字萬年歷得到了越來越廣泛的應(yīng)用。在這次的設(shè)計過程中主要 是在 Quartus2上使用 Verilog語言完成代碼的編寫與模擬仿真，在設(shè)計過程中出現(xiàn)了不少的問題，一些問題是因為自己的粗心大意，也有一些問題則是對相關(guān)知識的認識不夠徹底。畢業(yè)設(shè)計是對大學以往知識的綜合運用，但是由于學習的不夠認真，導致這設(shè)計過程中遇見了很多看似簡單卻沒法自我完成的問題。 Secondly, a wide cannot exceed 36 biggest bits. Of course, can be more pieces of block RAM cascade up to form larger RAM, now only limited by the number of RAM chip inside block, and no longer subject to two above principle constraint. 5. Rich wiring resources Wiring resources connected all the units inside the FPGA, and the length of the attachment and process determines the signal on the wire transmission speed and driving ability. The FPGA chip has a wealth of wiring resources inside, according to the process, length, width and distribution in different position and are divided into four kinds of different categories. The first kind is global wiring resources, used for chip inside global clock and global reset/buy a wiring。t have to face these challenges alone, because in the current leading FPGA pany application engineers every day to solve these problems, and they have put forward some amaze your design work easier design guiding principles and solutions. The I/O signal distribution Can provide the most multifunctional pins, I/O standards, termination scheme and difference right FPGA in signal distribution are the most plex design guiding principles. Although the Altera FPGA device no design guiding principles (because it realize rise pare easy), but the spirit of the FPGA design principles guiding thought is quite plex. But in either case, for I/O pins distribution, there are some signal to keep in mind is mon steps: 1. Use an electronic data list all plans signal allocation, and their important properties, such as I/O standard, voltage, need termination methods and relevant clock. 2. Check with the manufacturer block/regional patibility criteria. 3. Consider using the second spreadsheets formulate FPGA layout to determine what tube feet is a universal, which is dedicated, which support difference signal to the and global and local clock, which need reference voltage. 4. Utilizing the above tw