Bus State Analysis
Operating the Bus Analyzer
MMDS0508OM/D
MOTOROLA
Bus State Analysis
97
For example, if the beginning time tag is 3.26778887E03 and the ending
time tag is 3.2677928E03, the difference is 0.00000400 seconds, or 4
µ
s.
If the time tag is represented in clock periods, the procedure is the same,
but the
∆
c value is the number of time-tag clock cycles. Multiply the result
by the time-tag clock period to obtain the elapsed time between the
beginning and ending cycles.
For example, if the beginning time-tag value is 219, and the ending
time-tag value is 234, the difference is 15 time-tag cycles. At a time-tag
clock frequency of 4 MHz, the time-tag clock period is 0.25
µ
s, and the
elapsed time is 3.75
µ
s. Had the same time-tag values been obtained
with a time-tag clock frequency of 500 kHz (a clock period of 2
µ
s), the
elapsed time would be 30
µ
s.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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