25 Mbps UART chips with PCIe 2.0
Gen 1 compliant bus interface
Exar has released PCIe 2.0 Gen 1 UARTs with up to 25 Mbps
serial data rate. The series is composed of three devices:
XR17V352/354/358 featuring on-chip PCIe PHY and PCIe digital
controller, support for large FIFO sizes (256 bytes), optimized
software drivers, and a single-chip endpoint solution eliminating
the requirement for external PCIe-PCI bridge devices. The
XR17V352/354/358 series is ideal for remote access servers,
storage network management, factory automation, and Point-of-Sales
(POS) systems.
"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,"
said Levent Ozcolak, vice president, Interface Product Line.
"These highly differentiated single-chip offerings
provide system architects PCIe connectivity for their next
generation OEM products while presenting a cost optimization
opportunity for existing designs using PCIe-PCI bridges
with PCI UARTs."
The XR17V352, XR17V354, and XR17V358 have a PCIe interface
compliant with the PCIe 2.0 specification. The XR17V352,
at 9mm x 9mm is the two-channel compliant device. All the
devices share a common set of features including large FIFO
sizes of 256-byte TX /RX that optimize overall data throughput,
automatic hardware (RTS/CTS or DTR/DSR) flow control, automatic
software (Xon/Xoff) flow control, RS-485 half duplex direction
control with programmable turn around delay, and Infrared
(IrDA 1.1) data encoder/decoder. In addition, the series
shares other features including a fractional baud rate generator,
16 GPIO pins, and multi-drop mode with auto half-duplex
transceiver control. Software drivers are available for
Windows 2000, XP, Vista, and Windows 7, QNX and Linux. In
order to minimize overall power consumption, these devices
operate from a single 3.3V volt power supply with a built-in
buck regulator that can be used to power the core operating
at 1.2V.
"The availability of complete driver support for a
wide range of operating systems further simplifies system
design and shortens time-to-market for new OEM product introductions,"
said Rakesh Bhatia, senior manager, strategic marketing,
Interface Product Line. "This marks another step in
Exar's continuing effort to extend the reach of its serial
communications expertise to offer additional I/O connectivity
options for high performance systems."
Price:
XR17V352: At $5.60 for 1k pieces
XR17V354: At $7.20 for 1k pieces
XR17V358: At $9.90 for 1k pieces
Package:
XR17V352: 113-pin BGA package
XR17V354: 176-pin BGA package
XR17V358: 176-pin BGA package
Availability:
XR17V352, XR17V354, XR17V358: now in samples
For more details visit www.exar.com
