ddr for ps4

When the bare board program is written on the OK6410, the DDR cannot be initialized successfully using Jink or using Loadbin ddr.bin 0xc000000 in Jlink-commander, and stays in the step of waiting for the DDR to initialize ready;Note: The first two days can also successfully initialize the DDR and be able to perform the operation of the UART initialization, and th

(1) In terms of appearance, the common SDRAM memory strips and DDR SDRAM memory strips are almost indistinguishable, but careful observation will find many differences. The SDRAM is often said to be DIMM memory, it has a common (84x2 face) point of contact, so this memory is called 168-line memory, and the new standard DDR SDRAM memory bar has 184 points of contact. (2) SDRAM's gold finger has two notches,

the DDR Stress Test Tool provides two purposes. First, it can be used to calibrate the DDR3 so that the MMDC PHY delay settings and PCB are paired to achieve the best dram new energy. The whole process is fully automated, so customers can get their DDR3 working in a short period of time. In addition, the tool can run memory stress tests to verify the functionality and reliability of the DDR3. Stress tests can be used to verify hardware connections, MM

transplant engineer himself, generally set as the appropriate size (not too small, too small easy overflow; not too big, too big wasted space)(5) Partitions are determined before the system is migrated, using the same partition table in Uboot and kernel. The partitioning method in future system deployment and system code must also be the same.2. Uboot stage DDR partition(1) The partition of DDR and the par

As we all know, there are currently three kinds of desktop memory in the market, specifically divided into DDR,DDR2 and DDR3, then the three kinds of memory in the end how to judge and distinguish it? Now the Wuhan Long Dragon Computer Maintenance center of the author to give you a specific talk about the difference between them in order to solve the computer we want to upgrade the purchase of memory strips, The memory of the purchase of the wrong, th

DDR internal composition DDR is composed of multiple storage arrays. We call these storage arrays as banks. The early SDRAM was split into two banks, and then four, this is the maximum number of banks specified in the SDRAM specification. In the DDR2 standard, the number of banks is increased to 8. Each storage array is like a table. Each cell in a table is the smallest storage unit. The size can be 4, 8, o

Label:looking at the DDR manual for a while, feeling a little bit about it, want to actually board debugging, but the lab is not much usable development Board, took a piece of ZYNQ board looked, DDR does have, but has integrated the controller, and the controller is placed on the PS end, PL can only be accessed through the Axi interface. But the other two development boards also like this, simply use Axi t

ZYNQ image paths to be used for ZYNQ video-related developers. This post describes a camera +hls image processing +DDR storage +VGA display image path. This channel is I and another colleague to achieve, I am responsible for the camera FPGA driver, HLS image processing IP Implementation and the system later optimization. Because of the company project, it is not possible to provide engineering documents, only to provide the framework and ideas.The sy

The error was reported today when the client used Modelsim fully automated simulation of the DDR SDRAM controller. I began to wonder if lattice software is too garbage, and there are weird problems. Tossing a night, found that I wronged the lattice, in fact, is the problem of Modelsim. I use the modelsim10.2, the error is like. A long time ago, a certain version will not be error, will only prompt warming.So how do we solve this problem? First you nee

Speed Grade (DATARATE/CL-TRCD-TRP)-1066 Mbps/7-7-7-Mbps/5-5-5 datarate Data rate 800,1066,1333,1600, even 2000MHz CL-TRCD-TRP Timing1.CL(CAS Latency): "Latent time of memory read-write operations Forefront Address Controller" (Possible options: 1.5/2/2.5/3)Other possible descriptions in the BIOS are: TCL, CAS Latency time, CAS Timing Delay. This parameter is important and is usually marked on the memory bar. The CAS parameter options for DDR memory

channel signal Signal Source Describe RID[3:0] Equipment Read ID tag. The value of the RID must match the value of arid. RDATA[31:0] Equipment Read the data. RRESP[1:0] Equipment Read response. This signal indicates the state of the read transmission: OKAY, Exokay, Slverr, Decerr. Rlast Equipment Read the last data that the transaction is transmitting. Rv

[U-boot: v2013.07-RC2] [Author: Bo Shen ] 1. Enable the MD command You can run the MD command by defining config_cmd_memory. Note: Because this definition is already available in , it is in the configure file related to the Board (in ). By default,

SDRAM Calculation of capacity Calculate the number of addressable locations (don't think of bit/byte/word for now) Number of address lines: 11 (A0-A10) Number of banks: 2 (BA0-BA1) Max number of rows = 11 (I. e., no. of address lines) Max number of

Author: DriverMonkey Phone: 13410905075 Mail: bookworepeng@hotmail.com QQ: 196568501 Because DDR2 is used for development and DDR3 is used in our project, we need to modify it. 1. At the beginning of the debugging, debug DDR3 according to the

P-bank: A concept of the early computer. Purpose: Match the width of the data bus of the memory chip and CPU chip. Method: Parallel multiple memory modules.L-bank: Segmentation of internal storage arrays to avoid addressing conflicts and improve

[U-boot: v2013.07-RC2] [Author: Bo Shen ] 1. Enable the base command Defined: config_cmd_memory,You can enable the base command. Note: Because this definition is already available in , it is in the configure file related to the Board (in ). By

Signal Reflection In the data line and chip connection point impedance is not the same, generate electrical signals reflected, become noise, in the high-speed circuit has great influence. As shown below, there are two dram on the bus, one

Http://itbbs.pconline.com.cn/topic.jsp? Tid = 582156 topicpage = 1 Early-Stage video cards generally only specify the default core/Display memory frequency, while the Display memory capacity is generally specified in the White Paper only for the minimum and maximum supported capacity. Later, the specific capacity is specified based on the model. NVIDIA series graphics card detailed parameters: Detailed parameters of ATI series graphics cards: Supplement: I added some release notes and s

by the screen display. In the Advanced Graphics accelerator card, video memory is used not only to store graphics data, but also to be displayed on the chip for 3D function operations. In advanced display chips such as nvidia, "GPU" (graphics processing units) parallel to the CPU has been developed. High-density operations such as "Tl" (deformation and illumination) are performed by the GPU on the graphics card, thereby increasing the reliance on the memory. Obviously, the speed and bandwidth o

, cache and MMU settings, read Ompin to determine boot media selection after reset.2.5.5.start. S parsing 4This section analyzes the Lowlevel_init. The starting part in S, including detection reset status, IO recovery, watchdog off, Development Board power lock, etc.2.5.6.start. S parsing 5This section focuses on parsing the code snippet that determines the current running address, which is different from the way it is explained in bare metal. Then a brief analysis of the code snippet of the ass