MRi -PCIE4S/R Serial interface cards/adapter

4 Port (RS232) Serial PCI 2.2 Adapter (RoHS) Add 4 industry standard RS232 serial COM ports over a single PCI slot, DB9 connectors.

The MRI-PCI4S/R RS-232 serial card leverages the Plug & Play capability defined in the PCI 2.2 bus specification. This card implements four 16C550 UARTs containing 32-byte FIFOs. It has a clock-multiplying feature allowing the board to achieve data rates as high as 115Kbps. The high clock speeds and deep FIFOs will greatly reduce CPU overhead, making this card an ideal choice for heavy multi-tasking environments.

All four 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 it will be a good citizen over the PCI bus.

Features:
- Speeds upto 115.2Kbps
- Compatible with 32/64-bit PCI and PCI-X slots with 3.3 or 5V
- Conforms to PCI 2.2
- Fully supports PCI power management specification 1.1
- IRQ sharing feature eliminates IRQ conflicts