Is there any detail explanations about what should be the usage of the "TRACE" signal in all channels of AXI, ACE, ACE-lite ?
In CCI-550, I think one of its usage is : When we read a data , if the data is from snooped master, the "RTRACE" signal will be low; if it is from the targeted slave (snoop miss), the "RTRACE" would be high. but actually I still don't know the usage for the transaction initiator to distinguish this ?
Thanks!
Kenneth
Hi Kenneth,
You can find the expected usage model of the trace signal in this document:
https://developer.arm.com/docs/ihi0022/fb
Section E2.6
Regards,
Xingguang