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FULL
DESCRIPTION |
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Low Profile PCI was designed to provide greater flexibility for embedded systems, thin-clients, and desktop and server environments. The boards are mechanically similar to standard PCI boards, but use a shorter board and a different mounting bracket. They are designed to fit into systems as low as 3.350" without using riser cards. The boards are built on 32-bit addressing, and can be used in standard PCI backplanes or with specialized Low Profile PCI brackets.
The QSCLP-200/300 provides 4 independent serial ports to a host computer via a single Low Profile PCI slot. The boards are built using the smallest (MD1) Low Profile board specification, which allows them to be used in even the smallest size systems.
Each port on the board can be configured as either RS-422 or RS-485 by using the Auto-Toggle feature. Full-Duplex, manual Half-Duplex and Auto-Toggling Half-Duplex options are available. In Half-Duplex mode the RS-422/485 transmitter can be enabled and disabled via the RTS or DTR signals (controlled through the Modem Control Register on the UART) or with the new Auto-Toggle feature, which only drives the lines when transmitting data.
The channels are addressed in a continuous 32-byte I/O block for simplified software access. And, all channels may also share one PCI interrupt. An interrupt status register is available for determining the interrupt source. All PCI registers are properly implemented, and users can be assured that these boards will be good citizens on the PCI bus.
The boards are implemented with 16554 UARTs containing 16-byte FIFOs. They have a clock multiplying feature allowing them to achieve data rates as high as 921.6 kbps. The high clock speeds and deep FIFOs will greatly reduce CPU overhead, making these boards an ideal choice for heavy multi-tasking environments.
The QSCLP-200/300 comes with a cable providing 4 D9 ports. Windows 95/98/Me/NT/2000/XP and OS/2 are supported. |
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