Interworld Electronics mPCIe-COM-xSM Mini PCI Express multiprotocol RS232/422/485 serial cards

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Interworld Electronics has released the mPCIe-COM-xSM Mini PCI Express communications cards, featuring high-performance 16C950-class UARTs. Available in 4- and 2-port versions, each port is capable of communication speeds up to 921.6 Kbps in RS232 mode and up to 3 Mbps in RS422/485 modes.

Each UART features 128-byte deep transmit and receive FIFOs to reduce CPU utilisation and eliminating data loss in multitasking operating systems. The integrated circuit and pre-scalar support a wide variety of standard and custom baud rates.

RS232, RS422 or RS485 modes can be software selected per port, and the selection is stored in non-volatile memory for future use. Users who don’t need that much flexibility can order versions with only RS422/485 or pure RS232. The RS232 ports are 100% compatible with every other industry-standard serial COM device and support TX, RX, RTS and CTS. The differential modes support both RS422 and RS485 2- and 4-wire modes.

The serial ports on the device are accessed using a low-profile, latching, 6-pin Hirose connector. Optional breakout cables bring each port connection to a panel-mountable DB9-M connector.