Freescale Semiconductor Motorola MMDS0508 Operation Manual page 97

MMDS0508OM/D
MOTOROLA
Freescale Semiconductor, Inc.
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
µs.
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 µs, and the
elapsed time is 3.75 µs. Had the same time-tag values been obtained
with a time-tag clock frequency of 500 kHz (a clock period of 2 µs), the
elapsed time would be 30 µs.
Bus State Analysis
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Bus State Analysis
Operating the Bus Analyzer
97