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| NXP Delivers Smallest ULPI Hi-Speed USB Transceivers for Mobiles NXP Semiconductors has announced availability of its new generation UTMI+ Low-Pin Interface (ULPI) Hi-Speed USB transceivers, developed specifically for mobile phone designs. With the smallest transceiver in the family measuring in at 2.2 x 2.25 x 0.6 mm, in a 0.4 mm ball pitch, NXP's transceiver solutions are the smallest in the market and address the specific needs of today's ultra-slim handset designs and other sleek portable devices. In addition, as the actual USB usage in mobile phones is low compared to overall talk and standby time, NXP's transceivers avoid battery drain by consuming only 0.5 μA in power-down mode. NXP's family of new generation ULPI Hi-Speed USB transceivers contains four members – ISP1504x1, ISP1508, ISP1702 and ISP1703, all of which are fully compliant with industry specifications, including ULPI Rev. 1.1, USB On-The-Go Rev. 1.2 and USB Rev. 2.0. Catering to the special needs of mobile phones, all transceivers support a mobile phone's wider range of input supply voltage of 3.0 V to 4.5 V. A new power-down mode conserves battery with an ultra low-power consumption of less than 0.5 µA when the USB transceiver is not in use. This initial range of second-generation ULPI transceivers have host, peripheral and OTG functions. ISP1508, ISP1702 and ISP1703 address lower system voltage levels with their VCC(I/O) of 1.4 V to 1.95 V, and some can be pin-selected to be in single data rate or double data rate interface operation. Additionally, all three parts can support USB charger detection, and external charge pump for OTG function. The ULPI transceiver interface, upon which NXP's second-generation ULPI Hi-Speed USB transceivers are based, was developed by an industry consortium to allow chips and systems designers to connect a Hi-Speed USB transceiver to USB core logic embedded in application-specific integrated circuits and systems-on-chip. By using the ULPI standard interface instead of proprietary interfaces, ASIC and SoC designers can reduce design time, simplify testing and ensure interoperability with USB transceivers. write your comments about the article :: © 2007 Computing News :: home page |