What are the main control chips of computer

The main control chip is the core component of the motherboard or hard disk. It is the bridge between various devices and the brain that controls the operation of the devices. In the motherboard, two chips are important. One is Nanqiao chip, which controls the expansion slot, USB interface, serial port, parallel port, 1394 interface, VGA interface, etc. it is mainly responsible for the connection between external interface and internal CPU. The other is Beiqiao chip, which controls the type of CPU, bus frequency of motherboard, memory type, capacity, graphics card, etc.

The main control chip of the motherboard is generally the north bridge. The south bridge chip is responsible for the communication between I / O buses, such as PCI bus, USB, LAN, ATA, SATA, audio controller, keyboard controller, real-time clock controller, advanced power management, etc. the north bridge chip is responsible for the communication with CPU North Bridge is an important part of motherboard chipset. Generally speaking, the name of chipset is named after North Bridge chip. For example, the north bridge chip of Intel GM45 chipset is G45, and the new one is the north bridge chip of X58 series supporting Core i7 processor.

3505, low-end chip, 3505 and 3506, 3507 add the function of line-ni to the function of 3502 (commonly known as CD direct recording function), but the music input format is wma format which is inferior to MP3 format. 3502, which is the low price in 35 series, but does not support lithium battery, has high power consumption, and has become one of the mainstream low-end products with low price. 3501 and 3502 have more functions than TXT electronic text reading function. At present, the schemes on the market mainly include the following categories: Philips, SigmaTel, telchips, skyark, Sunplus, Zhuhai torch, etc.

Philips chip solutions represent most of the machines of iRiver (ifp100, 300, 500, 700, 800, 900, 1000 series, etc.), a810c, A610, etc. of K & C of Korea, G128, etc. of MSC. The main feature of the products using this series of chip solutions is that the sound quality processing effect is currently the leading edge of the listed chip solutions (this is also a relative concept, because in addition to the chip, the factors affecting the sound quality also include the chip, related circuits and software processing).

But relatively speaking, it is difficult to develop and the cost of the overall scheme is high. Therefore, the current use of the series of programs, mainly concentrated in high-end brands.

Sigmate, the solution of this series of chips, should be used more by domestic machines at present. We are familiar with MSC H128, Patriot moonlight box, until now, there are many domestic machines. On the other hand, the representative products using this solution in Korean machines are (listed are domestic brands, the actual original factory is Korean products): JNC ssf70, ssf800 (3420 chips), Samsung 55 (3420 chips). There is also a new Hong Kong brand entering the domestic market: Lauren MP3 series all adopt this scheme (6602, 6603, 6604, 6608, 6620, 6632, 6628, etc.). It is characterized by a high degree of development at present - at the beginning, the series of products have a high rate of repair, now they are quite mature, and the stability of the products is very high.

The product with this scheme has a wider voice range (compared with the domestic decoding scheme), and the product quality is relatively stable. Under the dry environment in the north, the antistatic performance is strong.

One of the current trends in the development of this series of chips is that the proportion of machines used in South Korea is particularly high. We are familiar with the following products: K & C km-yf128256, km-c128f, km-101, km102, km103, etc.), Dec m550r, Lenovo f860, Zino z700i, MSc pn128, etc. The series of programs are also in constant development. The current situation is in South Korea, and its proportion should be acceptable. And from the actual performance of the product, its function, in the domestic machine, the use of the chip scheme is very few, and from the actual performance point of view, the performance of the machine compared with South Korea, there is a relatively large gap. In addition, the machines using this scheme basically have line in function, and the recording performance is relatively mature.

The representative products of skylirk include MPIO fl200 and the "round hanging series" produced by a large number of domestic enterprises. Wma does not support, is a big weakness of it, but the volume can be very small.

Torches, 2075 and 2085 atj2089 / 2087 (much more used in high-end machines).

2075 and 2085 are more commonly used in domestic low-end machines, 2085 has more USB2 than 2075. 0 support. Set MP3 player, flash disk function, DVR format file support, AB reread, LCD display function, the sound quality is slightly inferior to sigma Tel, repair higher.

Sunplus: spca514a / spca751a

The price is cheap, the domestic low-end machines are used more, the sound quality is average, and the repair rate is low.