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| 型號： | IMXPWSWP_D |
| 英文描述： | i.MX Application Processor Creating Power with Stamina White Paper White Paper |
| 中文描述： | i.MX應(yīng)用處理器創(chuàng)建功耗耐力白皮書白皮書 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 217K |
| 代理商： | IMXPWSWP_D |
Creating Performance with Stamina for Wireless Communications White Paper, Rev. 2
Freescale Semiconductor
7
services, that are also expected to include Bluetooth and 802.11 WLAN capabilities, and all these are
expected to require increasingly more powerful and efficient processors.
For smartphones, low power consumption is as important a design consideration in mobile
communications devices as speed and features. Design engineers know that real-world performance is not
accurately measured by clock frequency. Over clocking the processor does nothing to mitigate a slow
memory system. The i.MX family is engineered to do the same work quickly at low clock speeds and low
clock speeds translates into critical power savings. This winning combination is the model for i.MX, now
and in the future.
Power performance such as this means that an i.MXL processor PDA is engineered to enable more than
six hours movie play time using a 1000mAH battery, and can offer a standby time of between 50 and 70
days. To consumers, this is the equivalent of watching a feature film twice over on an i.MXL processor
PDA, or going on a "round the world" business trip and returning—without ever charging the PDA device.
The new i.MX21 offers CIF 30 fps video encode and decode, sending a secure transaction while playing
an MP3 or videoconferencing at 15 fps with a 35 percent to 65 percent reduction in power consumption.
1
Closing the Gap
Battery life, or stamina, in the real world is every bit as important to the wireless user as performance. Ask
anyone who’s lost a connection because his or her mobile phone has run out of energy. Unfortunately,
advances in processor performance, with their associated appetites for power, are far outstripping advances
in battery life. Moore’s Law states that processor performance doubles every eighteen months. Meanwhile,
battery energy density only doubles
every ten years
. What’s more, system performance adheres to another
1. Improvement over i.MX1.
2. Except for historical information, all of the expectations and assumptions, contained in the foregoing are forward-looking statements
involving risk and uncertainties. Important factors that could cause actual results to differ materially from such forward-looking statements,
include, but are not limited to, the competitive environment for our products, changes of rates of all related services, and legislation that
may affect the industry. For additional information regarding these and other risks associated with Company’s business refer to the
Company’s reports with the SEC.
2
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