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Trace - ETB STM performance, Hardware layout

ilay nissim
Intellectual 530 points

Hello 

We would like to know how the ETB and STM buffesr are connected inside the C6678
Which bus is used ?
what is the bus width  and frequency? 
Is there a way which is not hardware intrusive to pull data out of the trace Buffers ? 
 (meaning not consuming DDR or L2 banwdwith)

Tks 

Ilay

  • 0
    Guru 10750 points

    Hi Ilay,

    The STM and ETB connects to TeraNet 3P which is CPU/3 and 128b probably,

    The only non intrusive way is to use the Jtag, the next intrusive but non DSP cycles consumer is to use the EDMA, In case you need only the 4K ETB than you can read it at Idle time or any other state that does not interfere your program,

    Thanks,

    HR