Click image to enlarge HDLC-PMC
HDLC Communications Controller

The HDLC-PMC is a four channel HDLC communications controller on a single PMC card. The HDLC-PMC uses a high performance, industry standard serial communication controller to provide 4 independent channels that can be configured for either HDLC-Synchronous or Asynchronous communication.

The HDLC-PMC has been designed for demanding transportation and industrial applications. The HDLC-PMC supports an extended temperature operation range of –40 to +85C. All 4 ports feature galvanic isolation up to 2000Vrms.

Each of the 4 channels can be individually configured for RS-232, RS-422 or RS-485 electrical interface. Each channel has independent receive and transmit FIFOs that allow high speed serial data rates.

The HDLC-PMC is available with software drivers for Linux and Windows.

NB: Preliminary Information Subject To Change


  • 4 channel concurrent operation
  • Individually configurable for HDLC / Asynchronous operation
  • 2000Vrms galvanic isolation for each port
  • Selectable RS-232/422/485 electrical interface
  • Rugged, Locking I/O connectors
  • Extended temperature operation (-40C to +85C)


  • Serial protocol conversion
  • Mass-Transit/Transportation
  • Vending machines
  • POS & ATM systems
  • Remote instrumentation
  • LAN Gateway or Bridge
  • Embedded WAN
  • Locomotive Communications
Supported Platforms Windows 7, Windows 8, Linux
Communications Controller
  • Bytes FIFO per channel
  • HDLC synchronous, Asynchronous operation
  • HDLC protocol support
  • Wide range of serial  encoding methods:
    • NRZ, NRZB, Biphase Mark (FM1), Biphase Space (FM0),
    • Biphase Level (Manchester),
    • Biphase Differential (Manchester Differential)
  • Up to 1MBit/sec multiple Ports (depends on host CPU)
  • Supporting differential TX-Data and RX-Data
  • Full-duplex operation
  • Abort Sequence generation and checking
  • Automatic zero bit insertion/deletion
  • Automatic flag insert
  • Programmable baud rates up to 115200bps
  • Full-duplex operation
  • 5,6,7, or  8 data bits per character
  • 1, 1.5, or 2 stop bits
  • Odd or Even parity
Bus Interface
  • PCIMG-2.0 Rev 2.1
  • IEEE 1386.1 standard
  • 32 bit PCI @ 33MHz
Physical Interface
  • Independent RS-232/RS-422/RS-485 ports
  • 2000Vrms galvanic isolation
  • Supporting TX-Data, RX-Data, CTS, RTS
  • Single +5V supply
  • Operating temp  -40˚C to +85˚C (extended temp)
Software Support
  • Linux
  • Windows-XP/7/8


HDLC-PMC Block Diagram

Order Enquiry for HDLC-PMC

Product Codes
  • HDLC-PMC-Ext - 4-port PMC HDLC Controller (-40 to 85˚C)
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