the_penetrator
Full Member level 5
Hallo fellow members...
i have question on JTAG usage.
i recall that JTAG used to add wait states in order to perform the scan. While one of their docs stated that this was inevitable, i remember running code on ARM from SSRAM (external static RAM). (this was done because we ought to disable the cache/scratchpad RAM to perform some current measurements).
Are the above true, or in case i was running code from the cache i would get no additional wait states.
So how do i monitor real-time transactions (with expected cycle accuracy) with JTAG. Then, i would have to the monitoring in harder way...
PS: JTAG can hold nWAIT HIGH so wait states are inserted.
thank you!
the_penetrator©
i have question on JTAG usage.
i recall that JTAG used to add wait states in order to perform the scan. While one of their docs stated that this was inevitable, i remember running code on ARM from SSRAM (external static RAM). (this was done because we ought to disable the cache/scratchpad RAM to perform some current measurements).
Are the above true, or in case i was running code from the cache i would get no additional wait states.
So how do i monitor real-time transactions (with expected cycle accuracy) with JTAG. Then, i would have to the monitoring in harder way...
PS: JTAG can hold nWAIT HIGH so wait states are inserted.
thank you!
the_penetrator©