DU2-PONY

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DU2-PONY • XMC Mezzanine Module

Dual Isolated EIA/TIA-232 Asynchronous Interfaces

The DU2-PONY is a XMC standard single-width mezzanine card, equipped with a PCI Express® to dual-UART bridge. Two RS-232 transceivers with internal 2.5kV 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 460kbps EIA/TIA-232-E transceivers allow for hardwired CTS/RTS handshake, and are well suited for operation in electrically harsh environments.

The DU2-PONY is equipped with the PLX OXPCIe952 single chip PCI Express® to UART bridge, which is suitable for asynchronous baud rates up to 15Mbps. Compared to the PC style RS-232 D-Sub pin assignment, the UART RX/TX signals are supported, and in addition CTS/RTS for (optional) hardwired handshake. The DCS, DSR, DTR and RI signals are not in use.

Two ADM3252E transceivers are provided to meet the TIA/EIA-232-E physical layer specifications. The RS-232 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-232 signals measured against shield (front bezel) must not be exceeded.