FarSync T2U-PMC

These PMC (PCI Mezzanine) cards provide a very flexible 2 port sync communications platform for Linux and Windows systems with back or front I/O.

FarSync T2U-PMC 2 port synchronous card


The FarSync T2U-PMC adapters offer a high quality PCI Mezzanine adapter solution for business, government and military applications. They have been developed to provide high performance, versatile synchronous connectivity for Linux and Windows systems using industrial quality components providing wide temperature range operation.

The products include low level drivers that allows access to the communications features available in the hardware. The adapter can optionally use the host’s standard TCP/IP protocol stack to allow access to IP based networks such as the Internet. The FarSync SDK provides a Developers Toolkit for the product.

The PMC adapters will support 2 synchronous ports at speeds of up to 10 Mbits/s. Two versions of the adapter are available – the FarSync T2U-PMC-R supporting rear I/O and the FarSync T2U-PMC-F supporting both rear and front I/O is also available. Both the front and rear I/O connectors can support RS232, X.21, RS530 (RS422 signalling), RS449 and V.35 network interfaces.

Adapter carriers allow PMC cards to work in a cPCI or a VME based chassis.

The product is supplied with a 5 year warranty.

Product details

The adapter comprises an AMD processor with no wait state SRAM. The whole memory space may be mapped via the PMC interface to the PC/Server. The PMC bus from the Server connects to the AMD processor contains a dual embedded HDLC / transparent controller with SDMA access (128 buffers per port) and a full range of timers.

Network Interfaces

The multi function line drivers available on all the ports support X.21 (V.11), V.35, RS232 (V.24, X.21bis), RS530 (EIA530, RS422) and RS449 network interfaces, all soft configurable and ESD protected from static charges.

The 2 synchronous ports which can run to speeds of up to 10 Mbits/s full duplex internally clocked and 10 Mbits/s externally clocked. Total bandwidth supported by the adapter is 40 Mbits/s. Line termination resistors are software selectable.

Terminal Timing

Terminal Timing is supported on the network interfaces to enable system-wide clock synchronisation.

Clock Generation

Internally generated clocks to drive a serial communications port can be derived from an on-board 8.192MHz clock (25ppm) and can be set to hundreds of different frequencies between 100 baud and 10 Mbits/s, 160 are preset, many other frequencies can be synthesized to order, contact us to discuss your requirements.

Multiple Cards

The drivers supplied with Windows and Linux allow large numbers of ports to be supported by the installation of multiple FarSync cards in a Server. Typically 12 or more cards (24+ ports) can be supported; the card limit is only dependent on the resources available in the host Server and the total bandwidth of the PCIe/PCI/PMC bus.

PMC Specification

The FarSync T2U-PMC (PCI Mezzanine card) cards are suitable for systems with a PMC connector, covering single processor and multi-processor systems. The adapter is 33/66Mhz PCI bus revision 2.2 compliant with support for both 3.3 and 5 volt signalling, the power for the adapter is taken from the 3.3 volt supply rail.


Cables can be supplied to connect to the Front I/O connector (FarSync T2U-PMC-F) to support RS232, X.21, RS422, RS530, RS449 and V.35 connections, see the order information for details on the last page. Cables are not supplied for the Rear I/O only version (FarSync T2U-PMC-R), full connection details on the IEEE 1386 connector for operation with RS232, X.21, RS422, RS530, RS449 and V.35 are supplied.

Order Information

The software firmware, drivers, utilities are included with the FarSync adapter. Cables are ordered separately.

The software and documentation is downloaded from this website using a code supplied with the FarSync adapter, it includes:

  • Drivers for Linux and Windows
  • Source code for Linux drivers
  • Network monitor and various useful utility programs

New releases of the software with enhancements and fixes are made available for free download from the Download page in the Support section of this web site.

The Developer’s Toolkit is ordered separately and supplied as a download