The contest winner is a portable media assistant

Lian, Ning
September 2004
Portable Design;Sep2004, Vol. 10 Issue 9, p30
The article highlights the winner of the i.MX21 Smart Speed Design Contest, in which contestants were asked to conjure up the next great wireless innovation built around Freescale's i.MX21 application processor with Smart Speed technology. When designing business portable media assistance (PMA) for business applications, security is important. The i.MX21 integrates a hardware security module that can be used to develop a platform specifically for e-business. The design requirements of PMA are safety, cost, and ease of use, yet it doesn't emphasize multimedia feature and portability. A common AC-97 audio code can be used and the second headphone amplifier IC reduced. Moreover, since the i.MX21 doesn't integrate a MAC module, an Ethernet controller is needed to complete the Ethernet interface. A 10 megabit Ethernet interface is sufficient for a PMA designed for personal use. Hence, the design incorporates the Ethernet segment of the i.MX21 reference design. An essential function of the PMA is copyright protection, which can be handled in one of two ways. First, every file transmitted to the PMA through the Internet has a copyright code indicating protection. If protected, the PMA is unable to export the file to the peripherals interface and deletes it from storage when the session ends. Second, customer behavior records are stored in the i.MX21 ID section.


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