1.Custom baud rates supported by external clock or by internal PLL programming
2.In the 256-byte deep FIFO chip in transmission, it receives the path of each serial port.
3.Supports remote wake-up and power management functions
4.Supports slow IrDA on all IEEE1284 serial ports
5.IEEE 1284 compliant parallel port interface, supports SPP / PS2 / EPP / ECP modes and centronic interface
6.Faster data rates of up to 1.5Mbps for parallel port