I would like to know how in the system do we generate this count value and
what would be the recomended clock frequency for this 48 bit counter to work.
I would also like to see some trace reports where this value is reflected .
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TSVALUEB input to CM4
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#1
junk 
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Posted 18 January 2011 - 12:28 PM
a) TSVALUEB - is an input of the processor and defines the global timestamp value.
I would like to know how in the system do we generate this count value and
what would be the recomended clock frequency for this 48 bit counter to work.
I would also like to see some trace reports where this value is reflected .
I would like to know how in the system do we generate this count value and
what would be the recomended clock frequency for this 48 bit counter to work.
I would also like to see some trace reports where this value is reflected .
#2
Joseph Yiu
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Posted 18 January 2011 - 03:00 PM
You can just add a 48-bit binary counter running at CPU clock.
To save power, you can use TRCENA from Cortex-M4 to enable it.
The global timestamp feature is fairly new to the Cortex-M3/M4 so some debuggers might not support this feature yet.
To save power, you can use TRCENA from Cortex-M4 to enable it.
The global timestamp feature is fairly new to the Cortex-M3/M4 so some debuggers might not support this feature yet.
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