The Study And Implementation Of The 56kbps Modem

Modem is the key equipment for digital signal being transferred over analog circle. The text introduces the development of Modem and compares the performance of all sorts of modulating patterns , and expatiates the 56kbps Modem protocol, including v. 90 protocol and v. 92 protocol, and analyses each module of Modem from the point of the system design. The hardware makes use of the integrated circuit CX06827 as the core of design and implements the v. 90 Modem. In the end the text presents an communicating example between singlechip and personal computer through Modem to explain the application of Modem in embedded system.