DU1-MUSTANG

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DU1-MUSTANG • XMC Mezzanine Module

Dual Isolated EIA/TIA-485 Asynchronous Interfaces

The DU1-MUSTANG is a XMC standard single-width mezzanine card, equipped with a PCI Express® to dual-UART bridge. Two 16Mbps RS-485 balanced line transceivers with internal 5kV isolation barrier provide for optimum noise and EMC immunity. The front bezel D-Sub connectors withstand up to 250VAC measured against shield.

The 950-style UARTs (COM ports) are compatible with any asynchronous serial application. Certified device drivers are available for Windows®. The 16Mbps EIA/TIA-485 transceivers can be configured for full-duplex operation (4+1 wire cable) or half-duplex (2+1 wire cable), either point-to-point or multipoint applications.

The DU1-MUSTANG is equipped with the PLX OXPCIe952 single chip PCI Express® to UART bridge, which is suitable for asynchronous baud rates up to 15Mbps. According to the RS-485 transmission line standard, only the UART receive and transmit data signals are in use, and in addition DTR as RS-485 driver enable control for half-duplex and multipoint configurations.

Two ADM2682E transceivers are provided to meet the RS-485 physical layer specifications. The RS-485 signals of both serial ports are isolated from the board circuitry, and also isolated from each other. Due to the D-Sub connector specification, a maximum of 250VAC between the RS-485 signals measured against shield (front bezel) must not be exceeded.