The NPMC-8280-4E1/T1/J1 is a telecommunications interface board in PMC (PCI mezzanine card) form-factor. Based on the Motorola MPC8280 "PowerQuicc II" CPU the NPMC-8280-4E1/T1/J1 is targeted at telecom applications with a need for a powerful and versatile platform, such as applications using SS7, ISDN, ATM, VoP or any combination of these protocols.


The NPMC-8280-4E1/T1/J1 is a P1386.1/Draft 2.0 compatible PMC module that can be plugged onto any VME, cPCI or other carrier board offering a PMC extension slot. Using the on-chip PCI bridge of the MPC8280, the NPMC-8280-4E1/T1/J1 is PCI Rev. 2.2 compatible. The MPC8280 PowerQUICC II processor provides computing resources up to 855 MIPS (450MHz). For less demanding applications the MPC8280 can be replaced by the pin-compatible MPC8265.
The four primary rate line interfaces (E1/T1/J1) are driven using Infineon PEB22554 "Quad Falc" framer, and are available on two standard RJ-45 connectors on the front panel.
In addition to the four E1/T1 lines the NPMC-8280-4E1/T1/J1 offers a RS232 serial interface on a mini SUB-D connector and a 10/100 Megabit/sec (10/100BaseT) Ethernet interface on a RJ45 connector to be used with a standard CAT5 UTP cable.
Thus the NPMC-8280-4E1/T1/J1 is the generic platform for any implementation switching between the classic TDM streams as on E1/T1/J1 and the new generation of packetized data applications running on Ethernet.
Moreover, the 100BaseT port can serve as a configuration and management port, i.e. for SNMP.
The onboard FPGA based H.110 bus controller offers access to the H.110 TDM (Time Division Multiplex) bus and its SC Bus subset on the PMC P14 multi-purpose I/O connector.
Equipped with up to 256MB SDRAM and either 16 or 32MB onboard erasable Flash-Memory the NPMC-8280-4E1/T1/J1 is optimized to meet the performance and memory requirements of state-of-the art communication protocols and applications.


Communication protocols like SS7, ISDN, etc., 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. 
As well as standard protocols N.A.T. offers customized firmware development.
Enhanced software development and effective debugging is supported by the onboard BDM/JTAG interface.

Key features
Technical details
Block diagram
Order code
Relating the key features of the NPMC-8280-4E1/T1/J1 please consider the product description above!
  • Motorola MPC8280 „PowerQuicc II" at 450 MHz

PCI Interface and Compliance

  • MPC8280 on-chip PCI bridge,
  • 32bit /33MHz, PCI Rev. 2.2

H.110 Bus

  • FPGA based H.110 controller, H.110 on PMC P14 connector


  • 256MB SDRAM (PC-100, 64 bit) installed in a SODIMM slot

Flash PROM

  • 16 or 32MB Flash PROM (32bit)

Line Interface

  • four primary rate E1/T1/J1 lines (I.431) on standard RJ45 connectors at front panel supplied by Infineon PEB22554 "QuadFalc"

Serial I/O

  • RS232 compatible at front panel


  • 100BaseT Ethernet (IEEE 802.3) on standard RJ45 connector at front panel

Indicator LEDs

  • 6 software programmable LEDs and 2 system status indicator LEDs on the front panel

Operating System Support and Firmware

  • OK-1
  • SS7, ISDN and others

Power Consumption

  • 3.3V 0.85A typ. , 5V 0.55A typ.


  • Temperature (operating): 0ºC to +60ºC with forced air cooling,
    Temperature (storage): -40ºC to +85ºC
    Relative Humidity: 10% to 90% at +55ºC (non-condensing)


Standard Compliance

  • P1386 and P1386.1/Draft 2.0


Rev #
Date Last Modified
NPMC-8280-4E1_manual NPMC-8280-4E1/T1/J1 technical Reference Manual pdf 389 KB 2.8 12-11-2010
NPMC-8280-4E1_datasheet NPMC-8280-4E1/T1/J1 full data sheet pdf 336 KB 1.0 04-21-2005

NPMC-8280-4E1/T1/J1 block diagram

Product Code: NPMC-8280-4E1/T1/J1

NPMC-8280-4E1/T1/J1 MPC8280 PowerQUICC II (450MHz), 32MB SDRAM, quad E1/T1/J1, SCSA, 100BaseT, RS232 -


Rev #
Date Last Modified
OK1 V2 OK1 real time kernel for embedded applications, source or binary distribution, includes drivers for all onboard devices (preinstalled in Flash and included in board price) - -
NMTP2-RTL SS7 Run Time target license for primary rate communication interfaces, MTP2 only; available with OK1 only - -
NISDN-NET5-RTL ISDN Primary Rate Run-Time License for E1 interfaces, Switch Type ETSI, API, per target; available with OK1 only - -
NISDN-PNAM-RTL ISDN Primary Rate Run-Time License for T1 interfaces, Switch Type NI, 5ESS, DMS-100, API, per target; available with OK1 only - -