In order to support the industrialization of China's independent intellectual property rights, Spreadtrum Communications has made every effort to develop TD chips and solutions. Since the industry's first commercial TD-SCDMA / GSM / GPRS multi-mode communication baseband chip SC8800D was launched in 2004, it has successively launched series such as SC8800H / SC8800S chip. The world's first single-chip RF chip supporting TD-SCDMA / GSM / GPRS / HSDPA was released at the 2009 World 3GSM Conference. In 2011, Spreadtrum was the first to launch a low-power multimode series 3G chip based on 40nm process-SC8800G series chip.
The 3G mobile phone solution based on the Spreadtrum SC8800G series chip and the multi-mode RF chip SR3200 has the advantages of full function, low cost, low power consumption and Turn Key solution, which can help more terminal manufacturers develop TD functions with extremely cost advantages Machine and TD intelligent machine, effectively shorten the market cycle of customer products and improve the market competitiveness of customer products.
Features of SC8800G series chips
Figure 1. Schematic diagram of the functional structure of SC8800G series baseband chips.
SC8800G series baseband chips support TD-SCDMA / HSDPA / HSUPA and GSM / GPRS / EDGE dual-mode, and are the world's first series of dual-mode baseband chips using 40nm process, supporting HSDPA high-speed download and HSUPA high-speed upload functions. The SC8800G series chip integrates the core of ARM926EJ-S ?, the main frequency can reach 400MHz, and integrates a multimedia accelerator to support rich multimedia applications. The functional structure of the SC8800G series chip is shown in Figure 1. The SC8800G series is divided into two main functions: a HSPA / TD-SCDMA / GSM / GPRS / EDGE multi-mode baseband processing unit, a multimedia processing unit, a power management unit, and a rich universal peripheral interface (including external storage controller and Display controller, etc.), each functional module uses a modular design, the modular design makes the entire chip has a very good reliability and flexibility. The main features of SC8800G series chips are as follows:
1. Multi-mode communication baseband processing
SC8800G series chips support HSPA / TD-SCDMA / GSM / GPRS / EDGE standards, in terms of 2G standards, support quad-band GSM850 / EGSM900 / DCS1800 / PCS1900 and EGPRS Class12. In terms of 3G standards, it supports the TD-SCDMA standard (3GPP version 7), HSDPA 2.8 Mbps, and HSUPA 2.2 Mbps. Support two standard frequency bands of TD at the same time: 2010 ~ 2025MHz and 1880 ~ 1920MH. The communication module fully supports the technical specifications of China Mobile's 2G and 3G convergence.
2. Powerful multimedia
SC8800G series chips have powerful multimedia processing capabilities, embedded video processor for video encoding and decoding processing, while adding multimedia hardware accelerators to enhance image processing capabilities, such as supporting MPEG4 / H.264 playback 25fps, video phone MPEG4 / H.263 codec QCIF @ 15fps etc. Audio supports multiple formats of encoding and decoding, such as MP3 / AAC / AAC + and other music format decoding and polyphonic ringtone processing, can handle the decoding and playback of commonly used audio sources, and stereo output also adds a lot to the multimedia processing module. In particular, the built-in 5 megapixel digital camera controller can be directly connected to two digital CMOS image sensors to realize camera, camera and video call functions.
3. Lower power consumption
Compared with the industry's TD baseband chips, the power consumption of SC8800G series chips has been greatly reduced, and even exceeded the current mainstream WCDMA chips in some indicators. For example, the standby power consumption in GSM mode is 3.416mA, the voice call power consumption is 74.227mA, and the standby power consumption in TD mode is 2.417mA, and voice call power consumption is 68.748.
4. Comprehensive LCD screen support
SC8800G series chips support up to HVGA resolution, such as 2.0-inch, 2.4-inch, 2.8-inch, 3.0-inch, 3.2-inch, and 3.5-inch LCD screens, up to 262k colors, and dual-color screen, and integrated LCD controller And touch screen controller, support OSD / RotaTIon / Scaling, which is convenient for customers to choose more abundant screen types and define more forms of products.
5. High cost-effective memory support
SC8800G series chips have built-in NAND Flash controller and DDR / SDRAM controller, support NAND booTIng, and support mainstream models of NAND + DDR / SDRAM MCP. For NAND FLASH, support 8bit and 16bit devices, maximum support 2G bytes, power supply voltage is 1.8, 3.0V. For DDR / SDRAM, support 16bit and 32bit devices, maximum support 1G bytes, power supply voltage is 1.8V. NAND FLASH and DDR / SDRAM are directly connected to the NAND interface and DDR / SDRAM interface of SC8800G series chips respectively. According to needs and market conditions, the memory can choose the most cost-effective MCP (such as 1Gb / 512Mb or 512b / 256Mb, etc.).
6. Rich and flexible peripheral interfaces
SC8800G series chips have rich peripheral interfaces, which can not only meet the conventional necessary external devices, such as RF chips, Memory chips, etc., but also facilitate external functional third-party devices, such as Bluetooth, GPS, WiFi, etc. For the conventional interface, the chip has built-in USB2.0, SIM / USIM card interface, JTAG interface and real-time clock interface. For the multimedia input and output interface, the audio output can be output using the PCM audio interface, and the CMMB mobile TV processing can be connected using the LCM-IF interface. For the expansion of FM, Bluetooth, G-Sensor and other third-party functional modules, this chip provides UART interface, SPI interface, I? C interface, I? S interface, GPIO interface, SDIO interface for data input and output. The keyboard supports 8 * 8 keyboard interface. The chip design architecture has been considered in detail in terms of peripheral interfaces. It has made detailed plans for the future development of 3G technology and the possible expansion of mobile phones. The rich interfaces provided also meet the expansion of increasing functional services.
7. Stable power management
The chip itself integrates a power management unit to support power management functions such as standby and power-on. In addition, this unit can not only support on-chip power supply, but also realize power supply to off-chip chips, which can be greatly reduced in certain applications System power consumption. The core voltage of the chip is 1.8V, and the I / O interface voltage is 1.8 ~ 3.3V.
Today let`s talk about touch screen laptop. Sometimes people take Yoga Laptop or 2 In 1 Laptop or 360 Laptop as foldable touch screen laptop. Cause the later ones usually with touch screen function. The difference is that touch screen laptop specials can`t be flipped up to 360 degree, usually 180 degree. Do you think which kind of person love 2 in 1 touch screen laptop more? Business people is the right answer, cause they care more performance, touch screen function, 180 rotating, which are the very important points for businessman, especially teaching in person, do presentation, etc.
Do you think what other business laptop businessman love also except touch screen laptop under 20000? 14 inch 11th Laptop and 15.6inch 11th or 10th Laptop should be the top levels.
As a professional manufacturer, also customizing Android Tablet, Mini PC , and all in one except laptop. So believe you can always get the most competitive one at this store, balancing the quality and cost at top.
Any other special demand, you can just contact us freely. Will try our best to back you up.
Touch Screen Laptop,Touch Screen Laptop Specials,Touch Screen Laptop Under 20000,Foldable Touch Screen Laptop,2 In 1 Touch Screen Laptop
Henan Shuyi Electronics Co., Ltd. , https://www.shuyicustomtablet.com