The ASIX AX99100 is a PCIe-to-Multi-I/O controller supporting dual or quad UARTs with RS-232, RS-422, and RS-485 protocols. Serial ports support speeds up to 25 Mbps, hardware/software flow control, configurable baud rates, and 256-byte FIFOs. It supports PCI Express 2.0, legacy and MSI interrupts, ASPM power management, DMA transfers, and remote wakeup. Additional interfaces include an IEEE 1284 parallel port, SPI master supporting speeds up to 42 MHz, and a programmable local bus interface. The AX99100 is designed for multi-port serial expansion, industrial equipment, embedded systems, and other PCIe-based I/O applications.
