The bridge chip's embedded USB2.0 Link and Phy support full and high-speed modes and offer backwards compatibility with USB1.1. The OXU921S has a 6kbyte cache for USB data, facilitating a data transmission speed up to 480Mbit/sec. The integrated SATA core and Phy operate at 1.5Ghz, resulting in a disk interface data rate of 150Mbytes/sec.
The use of a high-performance ARM7 processor, with 8Kbyte close coupled RAM, means users are free to create highly differentiated external SATA drive enclosures through custom firmware development. 12 GPIOs further extend the device's capability. An embedded UART is provided for use in code development and debug and firmware can be programmed through the USB port to help simplify manufacturing and in-field updates.
To optimise the firmware development process, the OXU921S shares a common software base with other Oxford Semiconductor devices and is backed by a full development kit and evaluation board. The OXU921S is available for sub 5.5 USD in 100K+ quantities.
Oxford Semiconductor Andy Thorne, +44 (0)1235 824 900 Email Contact http://www.oxsemi.com or Publitek Limited Rob Davies, +44 (0)1225 470 000 Email Contact http://www.publitek.com