Technique for creating extended bit timer on a time processing unit
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United States of America Patent
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Mar 28, 2006
Grant Date -
N/A
app pub date -
Oct 21, 2004
filing date -
Oct 21, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A technique for implementing an extended bit timer with a time processing unit (TPU), without using the channel hardware of the TPU includes a number of steps. A timer of the TPU is periodically read to determine the value of the timer. A counter is incremented when rollover of the timer has occurred and a coherency flag is de-asserted after the timer transitions through a first count. The coherency flag is asserted after the value of the timer transitions through a third count and the value of the timer is combined with the value of the counter to provide a current count. When the coherency flag is asserted and the value of the timer is equal to or between the first and second counts, the current count is adjusted.
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