| 摘要 |
<p>A multi-speed, full duplex modem for transmitting and receiving analog signals over a telephone network (44) in communication with a remote modem. The analog signals are converted to digital data for processing by a signal processor (32) and a microcomputer (28). A bi-directional bus (30) is disposed between the signal processor (32) and the microcomputer (28) for selectively transferring multiple bits of data in either a transmit or receive direction. One or more of the multiple bits of data are restricted to convey bus direction data in one of the transmit and receive directions, and not restricted in the other direction. The full duplex modem allows simultaneous transmission and reception of analog signals over the telephone network (44), at one of the multispeed data rates selected for compatibility between the full duplex, multispeed modem and the remote modem.</p> |
