The invention discloses a multi-mode high-speed intelligent asynchronous 
serial port communication module and a realizing method thereof. A 
hardware architecture based by the multi-mode high-speed intelligent asynchronous 
serial port communication module is a CPCI (compact 
peripheral component interconnect) 
bus module. Hardware of the CPCI 
bus module comprises a programmable logic unit, a 
mass storage module, a general asynchronous receiving and transmitting controller, a high-speed digital 
isolator and an interface level switch device and the like. The invention has the advantages that: 1, an intelligent mode and a non-intelligent mode can be selected through 
software according to actual demands of a user; 2, when the multi-mode high-speed intelligent asynchronous 
serial port communication module is in the intelligent mode, data frame formats of all serial ports can be flexibly set through the 
software; and 3, when the multi-mode high-speed intelligent asynchronous serial port communication module is in the non-intelligent mode, the multi-mode high-speed intelligent asynchronous serial port communication module automatically judges data frame begins, data length, check, frame ends, and other information according to the set data frame formats during receiving the data.