Specifications

Wind River Trace for Wind River Workbench
Hardware Reference, 3.0
74
AMCC 440 is for four core clock cycles. When the caches are enabled, the trace
information can show that up to 16 instructions were executed for any trace clock
cycle. This means that with both the instruction cache and data cache enabled it is
possible to see as many as 900,000 instructions stored in the trace memory.
ColdFire Processor Performance
The Version 2 and Version 3 Core ColdFire trace clocks, on pin 24 of the BDM
connector, run at the core clock speed. This means that for every trace clock, the
trace information emitted by the Version 2 or Version 3 Core ColdFire processors
is for one clock cycle. When the caches are enabled, it is possible to see as many as
194,000 instructions stored in the trace memory.
The Version 4 Core ColdFire trace clock, on pin 24 of the BDM connector, runs at
one half the core clock speed. This means that for every trace clock, the trace
information emitted by the Version 4 Core ColdFire processor is for two clock
cycles. When the caches are enabled, it is possible to see as many as 380,000
instructions stored in the trace memory.