Apparatus for programmably converting an operating voltage of a CPU and chipset
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United States of America Patent
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-
Feb 2, 1999
Grant Date -
N/A
app pub date -
Oct 21, 1996
filing date -
Oct 21, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for programmably converting the operating voltage of a CPU & chipset by means of the firmware programmably setting the operating voltage, instead of by means of adjusting jumpers, is disclosed. The apparatus includes an address decoder unit, a programmable data memory, a DC to DC converter and a feedback resistance switching circuit. In operation, the computer inputs an address signal and a data signal required for changing the operating voltage to the address decoder unit. After being decoded, the data is written into the programmable data memory. Then the programmable data memory outputs a selection signal to change the internal resistance of the feedback resistance switching circuit, thereby to convert the output voltage of the DC to DC converter.
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