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November 15, 2009

Exar launches new PCIe 2.0 Gen 1 UART series

Features on chip PCIe PHY and PCIe digital controller, and optimised software drivers

By CBR Staff Writer

Exar has launched PCIe 2.0 Gen 1 UARTs with up to 25Mbps serial data rate. The series is composed of three devices, XR17V352/354/358, suitable for remote access servers, storage network management, factory automation, and point of sales systems.

The company said that the new devices includes features such as, an on chip PCIe PHY and PCIe digital controller, support for large FIFO sizes (256 bytes), optimised software drivers, and a single chip endpoint offering eliminating the requirement for external PCIe PCI bridge devices.

According to Exar, the new devices have a PCIe interface which is compliant with the PCIe 2.0 specification. The devices share a common set of features including, automatic hardware flow control, automatic software flow control, RS 485 half duplex direction control with programmable turn around delay, and infrared data encoder/decoder.

In addition, the series also shares other features including a fractional baud rate generator, 16 GPIO pins, and multi drop mode with auto half duplex transceiver control. These devices operate from a single 3.3V volt power supply with a built in buck regulator.

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Levent ozcolak, vice president of Interface Product Line, said: The XR17V352/354/358 series is the industry’s most advanced and complete PCIe endpoint solution supporting up to 25 Mbps UART data rates, 16 GPIOs and large FIFO sizes.

“These highly differentiated single chip offerings provide system architects PCIe connectivity for their next generation OEM products while presenting a cost optimisation opportunity for existing designs using PCIe PCI bridges with PCI UARTs.

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