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8-Channel Ultra High-Speed Serial I/O XMC / PMC Adapter : New Generation



PDF print version of this specification

The 8-Channel Ultra High-Speed Serial I/O PMC Adapter provides eight channels of simultaneous, high-speed (>20 Mbit/s), bi-directional serial communications. All channels are jumper configurable as RS232/422/485. This adapter also supports a number of UART (Universal Asynchronous Receiver/Transmitter) (<1 Mbit/s) channels.

The adapter design complies with the XMC specification (ANSI/VITA 42.3-2006) and the Conduction-Cooled XMC (CCXMC) specification (ANSI/VITA 20-2005 (S2018)) and is available in a ruggedised conduction-cooled version with backplane I/O.

Block Diagram
8 Channel High Speed Serial I/O XMC / PMC Adapter Block Diagram


The 8-Channel High-Speed Serial I/O XMC Adapter uses a single Xilinx Spartan-6 or Artix -7 Field-Programmable Gate Array (FPGA) as Serial Communications Controller. The Artix -7 FPGA can easily be configured to implement different serial protocols, thus allowing the adapters to keep up with technological advances. The Xilinx HSDLC IP core implements a controller for the High-Level Data Link Control (HDLC) and the Synchronous Data Link Control (SDLC) protocols. It is based on the Intel 8XC152 Global Serial Channel (GSC) operating in SDLC mode and adds features to support HDLC or proprietary frame transmission under host processor control. The HSDLC IP core operates as a peripheral to the serial I/O controller. Control and status registers are accessible via an Advanced Peripheral Bus (APB) and a comprehensive set of interrupt signals facilitates interrupt-based operation.


  • Cost-effective and flexible option for systems that require both high-speed, real-time communication links as well as some low-speed serial links
  • Offers independent I/O processing offboard the host
  • up to four independent oscillators
  • eight indicators LEDs


  • Distributed real-time applications in harsh environments
  • Mission-critical applications
  • Avionics
  • Vetronics
  • High-speed sensor integration

Host Interface4-Lane;2,5GHz PCIe

Electircally: PCI Express Rev.2.0

Number of Channels8
Serial I/O InterfaceSCC Channels
RS-422/385 : TxD, RxD, CLK_IN, CLK_OUT 
Termination100 ohm (individually selectable for each SCC channel)
Bit RatesSerial I/O ClockingRS-232RS422/485
Synchronous Mode1 Mbps20 Mbps
Asynchronous Mode1 Mbps6,25 Mbps
Maximum External Clock500 kHz16 MHz
  • HDLC
  • SDLC
  • Async
  • BiSync
FPGAXilinx Spartan6 150T or Xilinx Artix7 100T
Power10 Watt maximum, 3,3 V
Software DriversSoftware driver support for Linux and VxWorks
Independant ClocksUp to four
Indicator LEDseight

Physical Characteristics
XMC (ANSI/VITA 42.02016)143,75 mm x 74,00 mm (+ 0,0 / 0,5 mm), conforming to VITA 42 height envelope80 g +/- 10 g
CCXMC143,75 mm x 74,00 mm (+ 0,0 / 0,5 mm), conforming to VITA 42 height envelope80 g +/- 10 g

Environmental Specifications
- Operating
- Storage
0 C to +55 C
-40 C to +85 C
-15 C to +75 C
-50 C to +85 C
-40 C to +85 C
-60 C to +125 C
Humidity0% - 90% non-condensing0% - 95% non-condensing0% - 95% non-condensing
ShockN/A30 g peak for 11 ms40 g peak for 11 ms
- Sine
- Random
2 g (peak) 10 Hz to 100 Hz
0,04 g/Hz at 15 Hz to 2 kHz
2 g (peak) 5 Hz to 2 kHz
0,1 g/Hz at 15 Hz to 2 kHz
10 g (peak) 5 Hz to 2 kHz
0,1 g/Hz at 15 Hz to 2 kHz

Part Selector
Part NumberFormfactorGradeCoolingI/ONumber of channels
CCII/NHSS8/XMC/8P/BP/CCXMCConductionCooledAirFront Panel8 x RS-232/422/485
4 x RS-232
CCII/NHSS8/PMC/8P/BP/CCPMCConductionCooledAirFront Panel8 x RS-232/422/485

CH8SS008 Version 0.6 2019-09-15
CCII Systems (Pty) Ltd P.O. Box 171 Rondebosch 7701 South Africa (+27) (0)21 683 5490 Fax : (+27) (0)21 683 5435 www.ccii.co.za