Like computers, routers also contain a central processing unit (CPU). Different series and models of routers, which CPU is notAll the same. Cisco routers generally use Motorola 68030 and Orion/R4600 two processors.
CPU chip and memory chip. These two are the main chips. The average home is 2M memory chip. CPU chips are almost the same, generally 1500HZ. And then there's the effect chip. It's not an effector. Be careful. Heh.
1, NE5532 is best. According to the information displayed, the best audio op amp chip is NE5532, which is a high-performance low noise dual operational amplifier (dual op amp) integrated circuit, with better noise performance, excellent output driving ability and quite high small signal bandwidth.
2, LM1875 is one of the most commonly used power amplifier chips, designed for mono, not only has the advantages of mellow sound quality and high power, but also has a complete protection circuit, in the same type of chip belongs to the high-grade model.
3, cm108 chip sound quality is very good. CM108 YesA relatively high road USB audio I/O control chip, in many domestic and foreign USB mobile sound cards, integrated headphones have been widely used.
4, PWM input Class D audio amplifier: TAS5176 TAS5122 TAS5601 Class AB audio amplifier: TPA6211A1 TPA6030A4 TPA60172 and other recommended building the main class D, Class AB amplifier maximum power of about 40 and Class D typical between 80% to 90%, reducing the power supply design.
5, ESS SabBut the cost of memory is high. And dual channel also puts higher requirements on PCB design. The 1M Level 2 cache is also a highlight.
At present, the most used chips for network set-top boxes are: Whole Zhi, Ruixin Micro, Hisilicon. Full Zhi All winner, although it is a little late to do a single core, but the initiative to rely on the giant ARM, from the beginning to choose the low-cost core A8, plus 1G high frequency, all of a sudden than the 800M A9 on the market 200M.
Indicates the chip: Hi3798m. Hisilicon chip is also the best chip in the box industryIt is recognized as the most stable and strongest decoding chip, but also because of its high price, only a few boxes are currently using this chip. Representative products: Huawei Secret box, Hameidi Hi Q M3. The box price is distributed around 350 yuan.