radeon ddr

1. Overview The basic use of the EDMA3 controller is to transfer data independently from the CPU in bulk. Typical usage: A: Service external memory (e.g. DDR) B: Memory within the service chip (e.g., L2 SRAM) C: Service peripherals, such as: Serial port Main purpose: Reduce the data transmission task of DSP. The EDMA3 controller consists of 2 main modules: The EDMA3 Channel controller (EDMA3CC) acts as the user interface for the EDMA3 controller, EDMA

chipsets refers to dual-channel DDR memory technology, the main dual-channel memory platform Intel is the Intel 865/875 series, and AMD is the Nvidia Nforce2 series. Dual-channel memory technology is a low-cost, high-performance solution to the problem of CPU bus bandwidth and memory bandwidth. Now that the CPU's FSB (front bus frequency) is getting higher, Intel Pentium 4 has a much higher demand for memory bandwidth than AMD Athlon XP. The Intel Pe

Tags: http OS AR, data usage, on, problem, amp, AD DDR2DDR2 (double data rate 2) SDRAM is a new generation of memory technology standard developed by JEDEC (Joint Committee for electronic equipment engineering). The biggest difference between it and the previous generation of DDR memory technology standards is that, although the same basic method of data transmission is adopted at the same time as the clock increase/decrease delay, DDR2 memory has twi

1. Why should there be uboot1.1, the main components of the computer system(1) The computer system is the CPU as the core to run systems. Typical computer systems are: PC (desktop + notebook), embedded devices (mobile phones, tablets, game consoles), single-chip microcomputer (household appliances like rice cookers, air conditioners)(2) Computer system components are very many, different computer system components are different. But all the main core components needed to run a computer system ar

Note: This article is to learn the notes of teacher Zhu's course collation, based on uboot-1.3.4 and s5pc11x analysis. Analysis of the former part of uboot analysis of Start.s 1 lowlevel_init /* Go Setup Memory and board specific bits prior to relocation.*/Ldr sp, =0xd0036000/ * End of SRAM dedicated to U-boot */ Sub sp, SP, #12/ * Set stack */ mov fp, #0 bl lowlevel_init/ * Go Setup pll,mux,memory * / This time the stack is set in SRAM because the current

With the popularity of Microsoft's latest operating system Windows Vista, many friends complain that the new operating system requires too much hardware, if you want to use the new system smoothly, you need to pay a lot of money to replace the hardware and upgrade your old man. Therefore, many friends are very fond of Vista. Not long ago, a system optimization tool began to become popular on the network. This tool can greatly optimize the system usage speed without replacing the hardware, and ha

On csdn, the user pbtincsu provides such code, which is said to be used for ultra-fast shutdown: Public declare function rtladjustprivilege lib "NTDLL" (byval privilege , byval newvalue , byval newthread , oldvalue )Public declare function ntshutdownsystem lib "NTDLL" (byval shutdownaction )Public const se_shutdown_privilege = 19Public const shutdown = 0 Sub main ()Rtladjustprivilege se_shutdown_privilege, 1, 0, 0Ntshutdownsystem ShutdownEnd subI tried it. The shutdown speed is indeed very f

Tulip-ego announced the release of a £ 283000 diamond laptop. These laptops are embedded with a total of 80 karat diamonds on the left right side of the platinum panel, and a large number of African zebra leather packages are used around and outside the expensive laptop. Tulip-ego's diamond laptop costs about $0.35 million.This diamond notebook uses amd turion 64 mobile processor and 1 MB level-2 Cache instead of the Intel-centre platform. the chipset uses ATI

1 Basic Concepts In embedded software development, often come across to say that a block of memory is cache, or non-cache, what they mean. What scene to use separately. How Non-cache and cache memory areas are configured. This blog post will be discussed around these issues. Cache, which is a caching mechanism between the CPU and the DDR, provides a memory buffer for reading and writing between the CPU and the

original machine is in the winter match, the temperature is low and did not have much effect, then the problem will be exposed after the summer. Failure Summary: This kind of problem, in general, will first consider the memory bar. However, due to the motherboard cache problems or the motherboard design heat dissipation is also prone to frequent panic phenomenon. The author on a brand 845PE motherboard has found that due to the motherboard cooling is not good enough to cause the failure. Afte

Mobility Radeon HD 4650 Geforce GT 330M Nvidia Quadro Fx 880M Quadro NVS 5100M Geforce GT 240M Geforce GT 230M Geforce GT 325M Geforce GT 130M Nvidia Quadro FX 1700M Geforce GT 220M Geforce GT 120M Geforce GT 320M ATI Mobility FireGL V5725 Mobility Radeon HD 5470 Mobility Radeon HD 5145 Mobility Radeon H

frontend bus speed is changed to 800 MHz, so you will see p4 of the 533 Front-End bus and P4 Of the 800 Front-End bus. Their actual external frequencies are only 133 and 200. That is, FSB = CPU external frequency × 4. AMDBased on the same principle, the athlon 64 processor will also support MHz Front-End bus frequency at MHz. However, for AMD athlon XP processors, Dual Data Transmission Technology (DDR, doubleDate rate), The frontend bus frequency is

then the external memory is no longer the SDRAM this simple memory, but DDR this memory. So the preparatory work that needs to be done in the beginning is greatly increased.Therefore, s5pv210 inside a more called irom of things, his internal curing a program, after power on Irom will start the internal program, some external devices for simple initialization, such as SD card, eMMC and so on.Internal SRAM has also been upgraded from 4k to 96k. To meet

that determine the performance of a group of memory. What does this mean? In fact, it is not difficult to really understand, and it is also very easy to calculate. The total memory bandwidth we just mentioned is actually the maximum data capacity that can be transferred within one second in an ideal situation. The formula is also very simple: total memory bandwidth (Mbytes) = maximum clock speed (MHz) x bus width (BITs) X number of data segments per clock/8. Let's explain it. It is best to unde

other hand, VRAM memory is limited, and if VRAM memory is used up, some data must be put into GTT memory.Usually GTT memory is on demand, and is used for devices, such as Radeon R600 graphics card can use up to 512M of system memory (this is set in the Linux kernel), a one-time allocation of 512M continuous memory for the device is not possible to succeed in the Linux system, And even if it succeeds, there is quite a lot of memory that can be wasted.

The configuration of the ISDN Router is very similar to that of the general router. Next we will explain the configuration of the ISDN Router in several steps. Use The debug dialer event and debug dialer packet commands to enable The corresponding debug switch of DDR. If you can see "DCC: The interface has no dialer-group. "or" DCC: it is an uninteresting packet "prompt information. Use the display current-configuration command to view the configurati

is the INAND/SD card), the runtime is running in DDR memory, independent of storage media. The above two states are stable state, the third State is the dynamic process, that is, from the stationary state to the operating state of the process, that is, the start-up process. That's the whole process.(2) The dynamic START process is to gradually move from the SD card to the DDR memory, and run the startup co

:// Main entry point Void main (void){// Call to real boot Function Code Local_boot ();// Jump to entry point Debug_printstring ("/R/njumping to entry point ");Debug_printhexint (gentrypoint );Debug_printstring ("./R/N ");Appentry = (void (*) (void) gentrypoint;/* UBL ends, gentrypoint returns the U-boot entry to appentry */(* Appentry )();} U-boot usually exists in the 0th page of the block after device_nand_ubl_search_start_block. UBL tries to search the 0th page of each block from the device

TTL General Purpose3.3 V Lvttl Push-pull Lvcmos Low Voltage CMOS General Purpose CMOS Push-pull PCI PeripheralComponentInterconnect PCI Bus Lvttl Push-pull I2C Inter integratedCircuit NXP CMOS Open drain SMBus System ManagementBus Intel CMOS Open drain Sdio Secure Digital InputOutput SD card assoc,Memory card CMOS Push-pull Mobile DDR