Detailed explanation of the main control chip classification

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 and model of CPU, bus frequency of motherboard, memory type, capacity, graphics card, etc.

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 programs on the market of electronic text reading function of TXT, mainly including the following categories: Philips, SigmaTel, telchips, skyark, Sunplus, Zhuhai torch, etc.

philips

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 belongs to 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 use of the series of programs, mainly concentrated in high-end brands.

sigmate

The solution of this series of chips should be that domestic machines use more. We are familiar with MSC H128, Patriot moonlight box, and 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 the beginning of the series, the product repair rate is high, has been quite mature, product stability 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.

telechips

One development trend of this series of chips is that the proportion of Korean machines is particularly high. We are familiar with the following products: K & C km-yf128 / 256, 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 trend is in South Korea, and its proportion should be very good. And from the actual performance of the product, its function. In the domestic machine, the chip scheme is rarely used, 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.

skylark

Representative products 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.

Actions 

2075 and 2085 atj2089 / 2087 (more used in high-end computers).

2075 and 2085 are more used in domestic low-end machines, 2085 is USB2 more 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

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.