The Friendship Group of the United Nations General Assembly Group launched a "smart phone" solution based on TI.
In this issue of "Smart Phone and Communication Specifications", Youshang provided TI (Texas Instruments)-based solutions, which also reminds designers of many considerations in the design of the solution. Further explanation and introduction of the contents of this program.
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Multimedia phones and PDAs are often rich in features and take into account various power levels, adjustments, and drive requirements. TI offers a variety of application-oriented/graphics processors, features and solutions for common lighting voltage requirements in these phones.
With feature phones to 3G wireless handsets with rich multimedia capabilities, the scalable OMAP and PMAP-DM platforms offer the best combination of high performance and ultra-low power consumption. TI offers a wide range of chips and software products to support advanced The operating system and a wide range of open source TI wireless system expertise span multiple communication standards and wireless connectivity solutions, including WiLink mobile LAN solutions, NavLink GPS and BlueLink solutions. TI solutions with innovative 3D graphics, high Quality video applications and advanced user interfaces enhance the user experience.
Power Management: Most of the power management requirements mentioned in smartphones are equally applicable to multimedia phones. Special step-down DC/DC converters (such as the TPS624xx / TPS65xx series) have advanced dynamic voltage scaling to meet the latest mobile processors. Requirements. The TI TPS630xx series offers 96% first-class efficiency over a wide range of battery voltages, input voltages down to 1.8 V for extended battery life, and support for new lithium-ion battery technology. LDO TPS799xx / TPS717xx is available For other power rails.
The TPS65K Series Power Management Unit (PMU) provides the highest integration for handheld devices. The latest PMU series includes stereo audio codecs and HS USB 2.0 on-the-go (OTG). These devices are also processor cores, IO, memory and Other voltages integrate multiple high-efficiency DC/DC buck converters and low-dropout regulators (LDOs). Additional features such as battery charger, LED boost converter, ADC and touch screen controller are integrated according to the PMU family. TI's SmartReflex technology and Dynamic Voltage-Frequency Regulation (DVFS) significantly extend battery life by adjusting the output voltage to the desired performance, all with I2C interface or logic high/low.
The Bq240xx series meets wall-mount and USB åŸ charging requirements, and the “impedanc Track†bq275xx offers an innovative next-generation gas gauge solution that automatically understands/detects battery characteristics and provides status to the host via a simple interface. Data, no need to understand cycles and lookup tables. TI has solutions for ID ROM and CRC certification (bq20xx and bq261xx). Provides support for different depths of encryption depth.
Audio notes:
Multimedia telephony seeks to enhance the user's audio experience with signal-to-noise ratio (SNR) of more than 100db and added features such as multi-band equalizer, 3D surround sound and echo cancellation/noise cancellation. Low power is always such a design An important item in
The full-featured audio codec in the TLV320AICxxxx / TLV320DACxxxx / PCMxxxx series integrates mono and stereo AD/DA converters and headphone/speaker amplifiers. Due to their efficiency and small package size, Class D amplifiers are becoming more popular. In some devices, the integrated DSP supports dynamic range compression, multi-band equalization, noise cancellation/echo cancellation and custom filtering. A new generation of TI audio codecs, such as the TLV320AIC3254, have better audio quality and longer battery life. life.
Display / Lighting and Touch Screen Notes:
The latest generation of drives (such as the TPS6115x /6x) offer the number of LED drivers (3 to 10) and implement pulse width adjustment and digital dimming (multiple selection of 32-step brightness control) in a small 2x2mm package. TI offers specific OLED drivers, such as the TPS6108x/ 6114x, offer new LDO-based forward voltage LED drivers (TPS751xx) for illuminated keyboards and stylish lighting, such as 2-lamp and 4-lamp EL drivers for different color segments, cameras The flash function is implemented with the TPS61050 family in a small CSP or QFN package.
TI offers integrated touch screen controller solutions such as the TSC21xx / TSC23xx series that integrates EDS protection as added value. Touch screen operation can easily cause up to 12KV discharge; a separate TSC can be provided with the rest of the telephone electronics Optimal isolation. The TSC200x Series TSCs achieve low power consumption and eliminate vibration and noise, as well as small package sizes.
Display I/O voltages are typically higher than 2.7V, which can cause mismatch with other digital logic devices; 20-bit and 24-bit level shifters (such as the SN74AVC20Txxx) can be used to resolve I/O compatibility issues.
Finally, use the following two block diagrams to deepen the designer's understanding and impression. 
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About the Grand United Group:
The United Nations General Assembly Investment Holding Co., Ltd. (listed on the Taiwan Stock Exchange, stock code: 3702) was formally established in November 2005. The group is headquartered in Taipei, combining WorldCom Group, Pinjia Group, Fuwei Group, Kai The leading brands in the Asia-Pacific semiconductor channel, such as the Group, the Group and the Youshang Group, have more than 6,000 employees, more than 280 product lines, and a service network covering 43 locations in Asia. In 2010, the turnover reached US$8.17 billion. It is the semiconductor component distributor with the highest market share in Asia. The company continues to strengthen its professional image of technical support, meets Demand Creation and provides a complete solution (Turnkey Solution). In the past few years, it has been selected as "IC Channel Industry No.1" by World Magazine, Business Weekly, and this week's magazine. In 2011, it was re-elected as the "Asia's Best IC Channel Agent" by EETimes, the third largest in the world. Electronic parts distributor.
The Great Alliance Group actively introduces the ROBC (Return on Working Capital) indicator, which combines “revenue†and “performance†to improve operations and earnings quality. Under the continuous integration of platform integration and merger benefits, the annualized return on equity (ROE) and return on operating assets (ROWC) of the United Nations General Assembly grew to 18.4% and 20.1% in 2010, EPS NT$4.48. In May, it was selected as the eleventh by Bloomberg Businessweek Technology Top 100 (comparison criteria include: market capitalization, revenue, return on equity, and growth rate of employees). With the vision of “Industry's Choice and Passage Standardsâ€, the University of the United Nations has fully implemented the core values ​​of “team, integrity, professionalism and efficiencyâ€, and united the team consensus to create a win-win situation for suppliers, customers and shareholders.
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