In Vybrid F-Series, is the clock frequency of 'Timestamp Generator' same as 'platform bus clock '?

[高尾浩司]

Hi, I want to evaluate Timestamp Generator and conduct an investigation into Timestamp Generator in Vybrid(VF6XX).

In Vybrid F-Series, is the clock frequency of 'Timestamp Generator' same as 'platform bus clock '?

[jiri-b36968 · Accepted solution]

Dear user,

Vybrid contain A5 with ETM from ARM so it is really ARM question. Nevertheless in ARM Information Center in CoreSight ETM-A5 Technical Reference Manual in chapter 2.3.1. Clock signals  is written "This must be the same clock as that wired to the CLKIN input of the Cortex-A5 processor." So we can say that timestamp is clocked by Vybrid A5 clock not platform clock.

ETM general info http://arm.com/products/system-ip/debug-trace/trace-macrocells-etm/index.php

Coresight on A5 link http://arm.com/products/system-ip/debug-trace/coresight-for-cortex-a.php there is button to get more information.

/Jiri