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Bridge chip targets tablets, smartphones

Posted: 17 Nov 2010 ?? ?Print Version ?Bookmark and Share

Keywords:bridge chip? host controller? SDIO?

Elan Digital Systems has unveiled two bridge chips designed to support the latest tablet smartphones and other mobile system designs.

Measuring just 4x4x 0.9mm, the USBHC869 is a system bus to USB host controller bridge that provides an additional USB 1.1 host controller for virtually any high-performance low-power system via the system bus.

Designed for multi-radio GSM/3G support, as well as Bluetooth and multi-function peripheral devices/modules, it offers 4 uA standby and 20mA active, 3.3, 2.8 or 1.3v I/O, programmable PLL for flexible xtal or external clock frequency, integrated USB transceivers, 16 bit uP bus interface, and also DDK support for Linux and Windows and other OS.

The VUB300, meanwhile, is a USB2.0 to SD/SDIO host bridge chip offering a single SD+SDIO host port from a USB host port. Typical applications for the VUB300 include adding SDIO-based WLAN, Bluetooth, GPS and multi-function devices to virtually any system via a standard USB host port. It is available in a 6mm x 6mm QFN package and supports any SD/SDIO specification compliant devices.

When used with Elan drivers, the VUB300 chip allows the device to appear in the system as an SD/SDIO host controller.

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