Data transfer method and apparatus having dual frequency operation
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 7, 1995
Issued Date -
N/A
app pub date -
Sep 4, 1992
filing date -
Sep 4, 1992
priority date (Note) -
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Abstract
The present disclosure includes a discussion of a data transfer system. The data transfer system is responsible for transferring data to and from a radio transceiver (107) and all the corresponding peripheral device ( 111, 113 ) contained in within the radiotelephone (103). The data transfer system includes a data bus (109), a master controller within the transceiver (107) and a peripheral controller within each of the peripheral devices. The data transfer system has an initialization state and a operational state. During the initialization state the data bus (109) operates at a lower frequency than during the operational state. The lower speed increases the time allowed for the assignment of the unique addresses for each of the peripheral controllers. Upon detecting completion of the initialization state, the master controller conducts the change to the operational state.
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