Exar has rolled out a full-speed USB UART with up to 12 Mbps serial data rate. The series is composed of three devices which are compliant to the USB 2.0 specification.
The XR21V1410/V1412/V1414 have differentiated features which include small packaging options, optimised software drivers, and support for large FIFO sizes.
The devices target a large cross-section of embedded and consumer applications. Examples of embedded applications are gaming systems, ATM machines, industrial automation systems amongst others. For consumer applications, the series is suitable for smartphones, personal digital assistants (PDAs), GPS systems, DVD players/recorders, gaming systems and other portable applications.
All devices in the series support USB suspend, resume and remote wakeup operations. They share a common set of features including large FIFO sizes of 128 Byte TX and 384 Byte RX for high overall data throughput, automatic hardware (RTS/CTS or DTR/DSR) flow control, automatic software (Xon/Xoff) flow control, and multidrop mode with auto half-duplex transceiver control. In addition, none of the devices require an external crystal/oscillator which saves on board real estate. These devices also have Sleep and PowerSave modes to minimise power consumption. Software drivers are available for Windows 2000, XP, Vista and CE, as well as Mac and Linux. The chips operate from a single 2,97 to 3,63 V power supply with the core operating at 1,2 V to minimise overall power consumption.
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