The XPort1020 is a communications controller targeting high-performance yet low-cost applications. The XPort1020 combines a wide array of supported serial protocols, a broad range of serial interface standards, and a flexible I/O routing structure to pack maximum flexibility into an industry-standard cPCI form factor. Powered by up to three Freescale MPC8270 (PowerQUICC II™) processors, the XPort1020 implements twelve serial communication ports, each providing a EIA-530-A-compliant signal set. Support for HDLC/SDLC, UART, transparent, and BiSync modes, with NRZ, NRZI, FM0, FM1, Manchester, and Differential Manchester encoding is also provided.