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Exar unrolls 'first' quad-channel 66MHz PCI 3.0 compliant UART

Posted: 28 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Exar? PCI 3.0? Universal Asynchronous Receiver Transmitter? UART? XR17V254?

Exar Corp. has announced a quad-channel 66MHz PCI 3.0 compliant Universal Asynchronous Receiver Transmitter (UART) device, said to be the industry's first such product. The XR17V254 includes a baud rate generator with fractional divisor and offers PCI power management feature.

Exar said the new device supports the rapid market transition to higher speed interconnects in the computer and telecom server markets, particularly for remote access servers, instrumentation, storage, embedded systems, serial port expansion, factory automation and process control applications.

"The XR17V25x comes with several value-added features such as higher bandwidth and a 32bit 66MHz PCI interface, " said Levent Ozcolak, marketing VP for interface products at Exar. "These capabilities are critical for the continuing market shift to applications requiring faster data transmission speeds, especially in embedded, POS and telecommunications."

Product details
The XR17V254 is a single chip multichannel 66MHz PCI 3.0 compliant UART and features a 3.3V supply, fractional baud rate generator, PCI Bus Power Management 1.1 support, 16bit programmable timer/counter and 64byte FIFOs. Support for 66MHz PCI is suitable for system management and administration of applications where continuous redundancy and QoS at higher bus clock speeds are critical.

Each UART channel includes a fully programmable TX and RX FIFO level trigger, FIFO level counter, automatic hardware and software flow control, IrDA encoder/decoder, and automatic RS-485 half-duplex direction control output for hardware and software design simplification.

The new device consists of four independent UART channels with a global interrupt source register for faster interrupt parsing of all the channels within the device. Its fifth generation configuration registers and enhanced registers meet the high bandwidth and power management requirements of communication systems. The device also offers sleep mode with wake-up indicator feature that allows for lower power consumption. It is register-set, package and pin compatible with the company's existing PCI UART devices.

All devices in the series are supported by standard serial port software drivers for popular OS including Windows CE 4.2 and 5.0, Windows NT 4.0, Windows 2000, XP and Linux.

The four-channel XR17V254 is offered in a 100-pin TQFP package and is priced at $17 in 1,000 piece quantities. The device is available for sampling today. Exar products are European RoHS compliant except for external lead finish or solder balls. Pb-free products are also available upon request.

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