Multifunctional Serial I/O


This product reached the end of its lifecycle (end-of-life) on January 2, 2010

Please refer to downloads section below if you require documentation or software. If you have any questions or require product support, including help migrating to our latest products, please contact us.


All three devices are independently accessible and may be used in any combination. Each of the connection protocols are fully supported with state of the art controllers. All I/O on the PMC682M are front accessed. In addition, card edge PCI systems can be accommodated using our PMC239 adapter for rapid prototype and development. Features 10/100BaseTX Ethernet connection Auto negotiation 10/100Mbit Smart Modem at 56K Baud Single RS232/RS422/RS485 with/without termination The PMC682M provides, in a single PMC module, connection to three of the most standard network/remote access protocols Ethernet 10/100BaseTX with full duplex support. High performance DMA engines and third generation control mechanisms allow full wire speed transmission with lowest possible system overhead. Integrated PHY auto-negotiates to the signaling speed (i.e., 10/100Mbit) of the connected switch/hub. Connection is via a standard RJ45 connector. RS232/422/485with/without termination The serial port can be directly connected to any terminal device. The RS232 serial output has a software-programmable baud rate from 300bps to 115Kbps (in the RS422/485 mode, it can run up to 1.5Mbits/sec). Smart Modem The modem supports all standard interfaces; dialing, call progress and telephone line interfaces are controlled through the V.250, V.251 and V.253 compatible command set. Standard modes are all supported: V.90/K56flex, V.34, V.32 and V.22 for data rates from 56Kb to 2400. The Modem can be used in FAX mode for 14400 to 2400 bps operation. Software Support We offer software drivers for all the popular operating systems (e.g. VxWorks, HPUX, LynxOS, Digital UNIX, Windows NT, Solaris, etc.). These drivers have been carefully designed and implemented to fit within the LAN protocol stack of the host operating system. In this way, all facilities available from the host OS can be utilized across the PMC682M. Our drivers allow for user control over the PMC682M auto-negotiation capability, allowing direct control of operating parameters.

  • Smart Modem at 56K Baud
  • Auto negotiation 10/100Mbit
  • 10/100BaseTX Ethernet connection
  • Single RS232/RS422/RS485 with/without termination


Form Factor
# ARINC Channels
Front I/O




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