| 摘要 |
<p>A data buffering device (33) is positionable between communicating processors (21, 22). At least one of the processors is battery powered and is arranged to be placed in a stand-by condition when not required to process information, thereby reducing overall power consumption. The data buffering device includes data storage locations (34,41) and means (42, 43) for addressing these locations to effect the transfer of data to or from the memory locations. In addition, interrupting means (42, F1, F2, G1) are provided for generating interrupt signals arranged to interrupt at least one of the processors. Thus, upon receiving an interrupt signal, a communicating processor is switched from its stand-by mode to an active mode and data transfer is effected. Data transfer may take place in both directions and respective buffering means, with respective interrupt signal generating means, are provided. The device may be used in a mobile cellular telephone, positioned between a controller and a digital signal processor. <IMAGE></p> |
