The NPMC-860-4S0 is a telecommunications interface board in PMC (PCI mezzanine card) form factor. Based on the Motorola MPC860 "PowerQUICC" CPU the NPMC-860-4S0 is targeted at telecom applications using Basic Rate ISDN interfaces.

Equipped with the onboard SCbus, the NPMC-860-4S0 provides an ideal and cost-effective interface for use in the VME, PCI, CompactPCI and proprietary environments.


The NPMC-860-4S0 is a P1386.1/ Draft 2.4 compatible PMC module that can be plugged onto any VME, cPCI or other carrier board offering a PMC extension slot. Using the Tundra QSPAN II PCI-to-QBUS bridge, the NPMC-860-4S0 is PCI Rev 2.2 compatible and capable of running in 32 bit PCI architectures.

The Embedded PowerPC based PowerQUICC MPC860 processor at 50 MHz (optional 66 or 80 MHz) provides the capability of processing user data as well as signaling information.

The four BRI S/T (S0) line interfaces are driven using the Motorola MC145574 ISDN S/T-Interface Tranceiver and are available on four standard RJ45 connectors on the front panel. The four framers can be individually configured to work as a user or network side interface. The line interfaces can be operated in either Point-To-Point or Point-to-Multipoint mode.

The NPMC-860-4S0 is equipped with 4 or 16 MB 32-bit DRAM and 2 or 4 MB 8-bit on-board programmable Flash.

The oboard OKI CT812 H.110 controller provides SCbus functionality on the PMC P14 I/O connector. Thus, the CT812 can switch any timeslot to and from any of the line interfaces for either CPU or SCbus access, or even just between the line interfaces.


Communications protocols like ISDN, X.25, X.31 are available as binary firmware images as well as operating system independent source code licenses. By default these firmware protocols run on the well- proven N.A.T. real-time kernel OK-1 which is optionally available in source code. Also available for the NPMC-860-4S0 are BSPs for other operating systems such as VxWorks and LINUX.

As well as standard protocols N.A.T. offers customized firmware development. Enhanced software development and effective debugging is supported by the onboard BDM interface.