Home > Pending > USB 2.0 UARTs from Nu Horizons feature an internal 48MHZ clock with no need for external crystal

Pending

USB 2.0 UARTs from Nu Horizons feature an internal 48MHZ clock with no need for external crystal

1st July 2009

ES Admin

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Datasheet

Now available from Nu Horizons are Exar's latest UARTs featuring a USB 2.0 compliant interface, the XR21V1410/V1412/V1414 series. These single, dual, and quad-channel UARTs are fully compliant to the Full Speed USB 2.0 USB interface specification and support 12 Mbps USB data transfer rate. The product series targets 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 ideal for smart phones, Personal Digital Assistants (PDAs), GPS systems, DVD players/ recorders and gaming systems and other portable applications.

The XR21V1410, XR21V1412, and XR21V1414 have a USB slave interface which is compliant with Full-Speed USB 2.0 specification. All devices in the series support USB suspend, resume and remote wakeup operations. The devices share a common set of features including large FIFO sizes of 128-byte TX and 384-byte RX that optimise overall data throughput, automatic hardware (RTS/CTS or DTR/DSR) flow control, automatic software (Xon/Xoff) flow control, and multi-drop 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. These devices operate from a single 2.97 to 3.63 volt power supply with the core operating at 1.2V to minimise overall power consumption.