A few days ago, Longxin 7A1000 bridge has been successfully developed, and the functional test of the sample is successfully completed and the relevant system basic development work. It is worth mentioning that the dragon core 7a1000 bridge is also equipped with the GPU, which is independently developed by Dragon, although this GPU's 2D performance is only available, 3D performance is very general, but completely independently realized on bridge and GPU. In every part of the CPU industry chain, although the road of Longxin's long march is still long.
More than 10 years ago, there were many manufacturers with X86 CPU, like the US Ying Weida, China's Via, SIS has also been a bridge, and Via's bridge has been very hot, even once occupied. A considerable market share. Since VIA refuses to discontinue some processor products that are compatible with Intel processor pins or bus, its proposed larger bridge market share has also lost partial interests. On March 31, 2006, Intel was subsequently resended with VIA's technical authorization, and Intel chose to renew with VIA, which directly led to the "VIA FSB-133 Processor Disclosure Notification Supplementary Manual", Indicates that the FSB-133/66 model embedded processor is discontinued before March 31, 2006 due to the use of authorization issues with the Intel negotiated bus. After being patented by Intel Patent, the CPU and bridges of VIA were devastated, and Intel gradually incorporated the bridges.
More than just Intel attaches bridge, it can also be seen from the history of AMD, it attaches great importance to the bridge. Although AMD has also developed AMD750, AMD760 and other products, but after AMD760, AMD stopped the development of subsequent products in the desktop area for a while, focusing on the research and development of CPU and server motherboard, while on the desktop bridge market. The company is supplied by companies such as VIA and Ying Weida as AMD.
After the AMD developed K7, the AMD has not been against the bridge of the civilian market. The AMD bridge supported by the civil market is mainly from VIA, SIS and Ying Weida. However, after AMD acquiring ATI, it is re-entered on the bridge. And vigorously promote the concept of 3A, not only from the bridges of VIA, SIS and Yingda, but also make the 3A platform concept "deep into the heart", so that many netizens ridicules "3A platform mysterious bonus" when DIY computers.
As described above, it can be seen that the very successful CPU company like Intel, AMD has attached great importance to the bridge, even if the bridge masters in his own important partner, it is still not relieved. Because the bridge represents the platform, Intel is to obtain higher profits by controlling bridges and motherboard control platforms. After all, a simple CPU is so much money. The bridge can be controlled by the bridge and use the "Change Pin Dafa" to keep the user constantly upgrade. This is actually a truth with the phone does not make the battery, and it is a truth after the battery is aging.
It is therefore, CPU must use all means to incorporate it in the bag, as DEC, Sun, HP (PA-RISC), the company lacks trees in GPU and bridges, is finally hidden. Like Intel, AMD has mastered CPUs, GPUs, and bridging companies to survive in market competition.
For all, the CPU part of the dragon core has a very high autonomy, and in addition to the standard cell library provided by the flow, Memory Compiler generates RAM, low speed IO units, and EFUSE units, including phase-locked loops, HT PHY, DDR2 / 3 PHY, Multi-port register, CAM, temperature sensor, etc., all macro units are custom-made, without any third party macro unit module. Although some publicity in China is "China Core", a large number of purchases of overseas modules to form a stark contrast.
Relatively speaking, the bridge and GPU are dragon core shorts. In the past, it took a long time, and the AMD chipset is equipped with the dragon core CPU. A dragon core No. 3 CPU requires 1 AMD RS780E North Bridge and 1 AMD SB710 Nanqiao to do advice, which not only makes the dragon core on the bridge, but also increases the entire machine cost of the dragon core. And AMD RS780E North Bridge and AMD SB710 South Bridge relatively old manufacturing process, and its GPU, it has become more and more can't keep up.
It is true that before this, Longxin also has an independent controlled 3A3000 CPU + 2H bridge plan, but as the first bridge of Longxin, the dragon core is not mature enough, plus 2 hours as a bridge is not, it is quite The suspicion of catching the fuck. In terms of performance, Longxin No. 3 CPU + 2H bridge is not as good as the dragon core No. 3 CPU + AMD chipset program.
In addition, power consumption, cost, reducing business risks and information security risks are also an important reason for dragon core to develop their own bridges. Although the CPU is the brain, the commander of the directive is issued, and the bridge is just a path. It uses AMD's bridge risk, but still has certain safety risks. This is the reason for the dragon core will develop dragon core No. 3 CPU + 2H bridge program. . After the development of a better and completely autonomous bridge, the information security hidden dangers brought by the AMD bridge can be solved.
For power consumption, due to the relatively old manufacturing process of AMD RS780E North Bridge and AMD SB710 South Bridge, the power consumption of the dragon core machine system is increased, and with the advancement of the times, the Dragon Head 7A can use the relatively advanced manufacturing process. This makes the power consumption of the bridge from about 15 watts and reduces 5-7 watts.
It will generally be more costly, it is generally more costly more costs, which is why Dragon's chief scientist Hu Weiwu said that after using his bridge, the cost of the whole machine can control better reasons. . And relying on everyone, relying on mountain mountain, sending the bridge to AMD is not practical, because once the AMD bridge is discontinued, it will cause a large impact on the dragon core.
According to Dragon Cart Offices: Longxin 7A 1000 Universal Slifting is the Dragon Core 3 series processing supporting bridge for the server and high-end desktop field, using a 40 nm manufacturing process, using FC-BG804 package. The bridge integration all the way HT3.0 is used to connect the dragon core 3 series processor. Other main peripheral interfaces include two X8 PCIE2.0, two X4 PCIE2.0, four roads SATA2.0, Liu Duan USB2.0, two Road DVO Display Interface, 64-bit DDR2 / 3, and other small interfaces. The bridge can meet the application needs of partial servers and desktop, and provide corresponding interfaces for their extended applications.
As can be seen from the official introduction, the interface of this bridge is relatively old, and the relatively old 40nm manufacturing process is used. The 2D performance of the Dragon core independently developed is basically better than the GPU integrated in the AMD chipset, but 3D performance is still very general.
Since Longfin is currently mainly targeted for industrial applications and party political miles in industrial control, these scenes are generally not high, more important, and thus these relatively old interfaces can meet the needs of users. A small number of 3D performance and good graphics cards are required under scenes that have higher requirements, or you can choose to insert a separate graphics card. After all, AMD has several graphics card Linux. In the case of China's domestic GPU performance, the external AMD is independent and there is no choice.
At present, Longxin's partner has launched the Dragon Core 3A3000 + 7A1000 module and motherboard product design, and it will be available in the near future. After you have your own 7A1000 bridge, the dragon core is completely autonomous on the CPU, bridge and GPU, and has opened every link on the CPU industry chain. Not only can the power consumption and cost of the whole machine platform be lower, but also not afraid of the AMD to stop production chipset, and reduce the risk of information security, the road of Longxin will no longer have any constraints.
Original link: https://www.eeboard.com/news/longxin-4/
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