Motorola Corporation

Todd Wayne Lumpkin

Patrick J Quirk

Timothy Lee Williams

Christian Paul Nelson

In a digital communication device adapted to be coupled to a digital network and having an analog port adapted for interconnecting an analog device to the digital communication device, a device for generating and detecting tones, includes: a processor programmed to selectively generate one of a first set of digital tones in a generation mode and to detect one of a second set of digital tones in a detection mode; and a conversion circuit, operably coupled to the processor, adapted to convert the one of the first set of digital tones generated by the processor in the generation mode to an analog tone and transmit the analog tone to the analog device; the conversion circuit further being adapted to convert an analog tone received from the analog device to the one of the second set of digital tones and transmit the digital tone to the processor when the processor is in the detection mode.

Device and method for generating and detecting tones in a digital data

The apparatus and method for high speed data and command transfer over an interface (202), such as an ISA or PCMCIA bus or interface, includes a transceiver (206) and a processor (210) having a direct memory access (DMA) controller (240), a memory (211) for storage of data, and a channel interface (218) for connection to a communications channel. The processor (210) is responsive through a set of program instructions, such as software or firmware, to receive an interrupt signal (310, 315) and, when the interrupt signal indicates a write command (320, 330), to transfer data via the transceiver from the interface to the memory for transmission over the communications channel (335), and when the interrupt signal indicates data received from the communications channel (350), the processor further responsive to generate a read command and transfer data from the memory to the interface via the transceiver (355).

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Huntsville, AL, United States of America

Todd Wayne Lumpkin