Quatech Asynchronous Communications Adapter QSCLP-100 - Manual (Page 2)

1 General Information
The Quatech, Inc. QSCLP-100 provides four RS-232 asynchronous serial
communication interfaces for Low Profile IBM-compatible personal computer systems
using the PCI expansion bus. The QSCLP-100 uses Quatech's new Enhanced Serial
Adapter design. Legacy serial port data rates are limited to a maximum of 115,200 bits
per second. Quatech Enhanced Serial Adapters can achieve data rates as high as
921,600 bits per second.
As a PCI device, the QSCLP-100 requires no hardware configuration. The
card is automatically configured by the computer's BIOS or operating system. The four
serial ports share a single interrupt line and are addressed in a contiguous block of 32
bytes. A special interrupt status register is provided to help software to manage the
shared interrupt.
The QSCLP-100's serial ports are implemented using 16550 Universal
Asynchronous Receiver/Transmitters (UARTs). These UARTs contain hardware
buffers (FIFOs) which reduce processing overhead and allow higher data rates to be
achieved.
The QSCLP-100 is supported under several popular operating systems and
environments. Contact the sales department for details on current software offerings.
Most device drivers are available for download from the Quatech world wide web site
at http://www.quatech.com.
QSCLP-100 User's Manual 1