基于FPGA设计的sdram读写测试实验Verilog逻辑源码Quartus工程文件+文档说明，DRAM选用海力士公司的 HY57V2562 型号,容量为的 256Mbit,采用了 54 引脚的TSOP 封装, 数据宽度都为 16 位, 工作电压为 3.3V,并丏采用同步接口方式所有的信号都是时钟信号。FPGA型号Cyclone4E系列中的EP4CE6F17C8，Quartus版本17.1。timescale 1ps/1psmodule top(input clk,input rst_n,output[1:0] led,output sdram_clk, //sdram clockoutput sdram_cke, //sdram clock enableoutput sdram_cs_n, //sdram chip selectoutput sdram_we_n, //sdram Write enableoutput sdram_cas_n, //sdram column address strobeoutput sdram_ras_n, //sdram row address strobeoutput[1:0] sdram_dqm, //sdram data enable output[1:0] sdram_ba, //sdram bank addressoutput[12:0] sdram_addr, //sdram addressinout[15:0] sdram_dq //sdram data);parameter MEM_DATA_BITS = 16 ; //external memory user interface data widthparameter ADDR_BITS = 24 ; //external memory user interface address widthparameter BUSRT_BITS = 10 ; //external memory user interface burst widthparameter BURST_SIZE = 128 ; //burst sizewire wr_burst_data_req; // from external memory controller,Write data request ,before data 1 clockwire wr_burst_finish; // from external memory controller,burst Write finish
标签： fpga sdram verilog quartus
上传时间： 2021-12-18
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1. Scope ......................................................................................................................................................................... 12. DDR4 SDRAM Package Pinout and Addressing ....................................................................................................... 22.1 DDR4 SDRAM Row for X4,X8 and X16 ................................................................................................................22.2 DDR4 SDRAM Ball Pitch........................................................................................................................................22.3 DDR4 SDRAM Columns for X4,X8 and X16 ..........................................................................................................22.4 DDR4 SDRAM X4/8 Ballout using MO-207......................................................................................................... 22.5 DDR4 SDRAM X16 Ballout using MO-207.............................................................................................................32.6 Pinout Description ..................................................................................................................................................52.7 DDR4 SDRAM Addressing.....................................................................................................................................73. Functional Description ...............................................................................................................................................83.1 Simplified State Diagram ....................................................................................................................................83.2 Basic Functionality..................................................................................................................................................93.3 RESET and Initialization Procedure .....................................................................................................................103.3.1 Power-up Initialization Sequence .............................................................................................................103.3.2 Reset Initialization with Stable Power ......................................................................................................113.4 Register Definition ................................................................................................................................................123.4.1 Programming the mode registers .............................................................................................................123.5 Mode Register ......................................................................................................................................................134. DDR4 SDRAM Command Description and Operation ............................................................................................. 244.1 Command Truth Table ..........................................................................................................................................244.2 CKE Truth Table ...................................................................................................................................................254.3 Burst Length, Type and Order ..............................................................................................................................264.3.1 BL8 Burst order with CRC Enabled .........................................................................................................264.4 DLL-off Mode & DLL on/off Switching procedure ................................................................................................274.4.1 DLL on/off switching procedure ...............................................................................................................274.4.2 DLL “on” to DLL “off” Procedure ..............................................................................................................274.4.3 DLL “off” to DLL “on” Procedure ..............................................................................................................284.5 DLL-off Mode........................................................................................................................................................294.6 Input Clock Frequency Change ............................................................................................................................304.7 Write Leveling.......................................................................................................................................................314.7.1 DRAM setting for Write leveling & DRAM termination function in that mode ............................................324.7.2 Procedure Description .............................................................................................................................334.7.3 Write Leveling Mode Exit .........................................................................................................................34
标签： DDR4
上传时间： 2022-01-09
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Extensively rewritten to present the C++11 language, standard library, and key design techniques as an integrated whole, Stroustrup thoroughly addresses changes that make C++11 feel like a whole new language, offering definitive guidance for leveraging its improvements in performance, reliability, and clarity. C++ programmers around the world recognize Bjarne Stoustrup as the go-to expert for the absolutely authoritative and exceptionally useful information they need to Write outstanding C++ programs. Now, as C++11 compilers arrive and development organizations migrate to the new standard, they know exactly where to turn once more: Stoustrup's C++ Programming Language, Fourth Edition.Bjarne Stroustrup是C++的设计师和最早的实现者，也是《C++程序设计语言》、《带标注的C++参考手册》和《C++语言的设计与演化》的作者。他从丹麦Aarhus大学和英国牛津大学毕业，现在是AT&T大规模程序设计研究部的负责人，AT&T特别成员，AT&T贝尔实验室特别成员，以及ACM特别成员。Stroustrup的研究兴趣包括分布式系统、操作系统、模拟、设计和程序设计。他也是Addison·Wesley的C++In-Depth系列书籍的编辑。
标签： C++
上传时间： 2022-02-01
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verilog实现I2C通信的slave模块源码状态机设位计可做I2C接口的仿真模型//`timescale 1ns/1psmodule I2C_slv (input [6:0] slv_id,input RESET,input scl_i, //I2C clkinput sda_i, //I2C data ininput [7:0] I2C_RDDATA,////////////////////////output reg sda_o, //I2C data outoutput reg reg_w, //reg Write enable pulse (1T of scl_i)output reg [7:0] I2C_ADDR,output reg [7:0] I2C_DATA); parameter ST_ADDR = 4'd0; parameter ST_ACK = 4'd1; parameter ST_WDATA1 = 4'd2; parameter ST_WACK1 = 4'd3; parameter ST_WDATA2 = 4'd4; parameter ST_WACK2 = 4'd5; parameter ST_WDATA3 = 4'd6; parameter ST_WACK3 = 4'd7; parameter ST_RDATA1 = 4'd8; parameter ST_RACK1 = 4'd9; parameter ST_IDLE = 4'd15;//---------------------------------------------------------------------------// Signal Declaration//--------------------------------------------------------------------------- reg i2c_start_n, i2c_stop_n; //wire RESET_scl; wire i2c_stp_n, i2c_RESET; reg [3:0] i2c_cs, i2c_ns; reg [3:0] cnt_bit; reg [7:0] d_vec; reg i2c_rd, i2c_ack; reg [7:0] I2C_RDDATA_latch;
上传时间： 2022-02-03
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因此，您想编写一个内核模块。您知道C，您已经编写了一些可以作为进程运行的常规程序，现在您想知道真正的动作在哪里，一个通配指针可以擦掉文件系统，核心转储意味着重新启动。内核模块到底是什么？模块是可以根据需要加载和卸载的代码段。它们扩展了内核的功能，而无需重新引导系统。例如。模块驱动程序的一种类型是设备驱动程序，它允许内核访问没有模块的系统硬件，我们将不得不构建单片内核并将新功能直接添加到内核映像中，除了具有更大的内核之外，这还具有缺点每次我们想要新功能时都要求我们重建并重新启动内核的过程So, you want to Write a kernel module. You know C, you, ve written a few normal programs to run as processes, and now you want to get to where the real action is, to where a single wild pointer can wipe out your file system and a core dump means a reboot.What exactly is a kernel module? Modules are pieces of code that can be loaded and unloaded into th upon demand. They extend the functionality of the kernel without the need to reboot the system. For example.one type of module is the device driver, which allows the kernel to access hardware connected to the syste without modules, we would have to build monolithic kernels and add new functionality directly into the em ernel image, Besides having larger kernels
标签： linux
上传时间： 2022-03-30
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意法半导体STM8系列参考手册Program memory: 8 Kbyte Flash memory; dataretention 20 years at 55 °C after 100 cycles• RAM: 1 Kbyte• Data memory: 128 bytes true data EEPROM;endurance up to 100 k Write/erase cycles
标签： stm8
上传时间： 2022-04-27
上传用户：zhaiyawei
BLE heart rate profile document.this is can help you how to Write a profile.
标签： ble
上传时间： 2022-04-30
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3.DDR布线细节i.MX6DDR的布线，可以将所有信号分成3组：数据线组、地址线组和控制线组，每组各自设置自己的布线规则，但同时也要考虑组与组之间的规则。3.1数据线的交换在DDR3的布线中，可以根据实际情况交换数据线的线序，但必须保证是以字节为单位（数据0~7间是允许交换线序，跨字节是不允许的），这样可以简化设计。■布线尽量简短，减少过孔数量。■布线时避免改变走线参考层面。■数据线线序，推荐DO、D8、D16、D24、D32、D40、D48、D56不要改变，其它的数据线可以在字节内自由调换（see the“Write Leveling"sectioninJESD79-3E■DQS和DQM不能调换，必须在相应通道。3.2DDR3（64bits）T型拓扑介绍当设计采用T型拓扑结构，请确认以下信息。■布线规则见上文表2。■终端电阻可以省略。■布线长度的控制。DDR数量限制在4片以下。
标签： ddr3
上传时间： 2022-07-05
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在.cshrc中添加以下设定：setenV NOVAS_HOME <Verdi_install_dir>set path=（$path $NOVAS_HOME/bin）setenV NOVAS_LICENSE_FILE <full_path>/<license_file>Orsetenv NOVAS_LICENSE_FILE 5219@hostname（环境变量NOVAS_LICENSE_FILE优先级高于LM_LICENSE_FILE）内容：>预编译设计前设置匹配信息·将库名字匹配到相应物理地址·格式[Library]logical name=physical locationpack=../1ibrary/pack用户参数设置（set via Tools>Preferences）调用其它novas.rc（可选项）指定搜索路径…>使用环境变量NOVAS_RCsetenv NOVAS_RC <path>/novas.rc>命令行中直接调用-rcFile <filename>搜索顺序1.-rcFile <filename>命令行参数（read/Write pointer）2.NOVAS_RC环境变量（read/Write pointer）3../novas.rc4.$HOME/novas.rc5.<Verdi install>/etc/novas.rc
标签： verdi
上传时间： 2022-07-20
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VIP专区-嵌入式/单片机编程源码精选合集系列（57）资源包含以下内容：1. 12864汉字液晶显示驱动程序.2. LCD液晶程序.3. Scan image DSP process Sca n image DSP process Sca n image DSP process Sca n image DSP process.4. PIC16F946 底层驱动.5. PIC16F946 底层驱动.6. cpld简单的教程.7. 针对嵌入式micro window系统.8. PPC下的文本编辑器源代码.9. PDIUSBD12USB固件编程与驱动开发周立功D12Win98驱动源码.10. C/C++嵌入式系统编程.11. 此文档为adi公司arm7tdmi内核的aduc70XX系列各模块的源代码.12. 这是用CH375芯片做的u盘转存的例子.13. 这是一个关于一个无线通讯芯片的无线的link的程序.14. msp430的iic通讯子程序.15. PADS2005中文教程.16. protel的常用器件库 protel的常用器件库 protel的常用器件库.17. cnstl970一款经典一款经典 cnstl970一款经典.18. 1602a经典资料 1602a经典资料.19. 一个计时程序.20. LED程序.21. windriver公司的vxworks系统是专业的嵌入式实时操作系统.22. 提供FAT16文件系统在嵌入式操作系统U_COS中的方案.23. 傅立叶变换程序 傅立叶变换程序.24. 请先删除编译后的debug/release.25. 液晶资料 液晶资料 液晶资料.26. 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料.27. 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料.28. 液晶资料 液晶资料 液晶资料 液晶资料 液晶资料.29. PHILIPS LPC76X D/A 实例程序.30. 为SYT240160CZK液晶显示的驱动.31. 该原码主要介绍如何在DSP上实现视频输入与输出的代码,基于DSP6000系列的..32. LCD显示测试程序.33. 基于双NIOS II 的IP无线收发机 2006年嵌入式电子大赛获奖作品.34. 2006altera大赛－基于软核Nios的宽谱正弦信号发生器设计：摘要：本设计运用了基于 Nios II 嵌入式处理器的 SOPC 技术。系统以 ALTERA公司的 Cyclone 系列 FPGA.35. Zigbee document about system structure.36. Samsung KS0719 graphical LCD (SPI) This driver allows to draw points and to Write characters on thi.37. C51 API 例子源码.38. Api_for_usb_products 源码．.39. avr mega8 pwm 试验带 Proteus 仿真.40. Alterla官方版ep1c20 FPGA NOISII开发板原理图.
上传时间： 2013-04-15
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