Sealevel Ultra COMM+8.PCIE

Jul 7, 2011 1:00 AM, By Erin Shipps, senior associate editor

PCI Express serial interface

This serial interface delivers flexibility for expanding serial communications. Compatible with any PCI Express slot, the board provides eight multifunction serial ports, each individually field-configurable for RS-232, RS-422 or RS-485. The Ultra COMM+8.PCIE utilizes 16C954 UARTs with 128-byte Tx/Rx FIFOs, which enable data rates to 921.6kb/s for reliable high-speed communications in data intensive applications. This high-performance UART includes 9-bit framing support and is register compatible with legacy 16550 software applications. In addition, the board derives a 62.5MHz clock from the PCI Express bus. In RS-485 mode, the board provides automatic control of the RS-485 driver in hardware. In RS-232 mode, all modem control signals are implemented for maximum compatibility with a variety of serial peripherals
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