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AHB Bus Tracer

General description Features
The AHB Trace Module allows to record AHB accesses for debugging purposes.
  • Record up to 1024 AHB bus accesses
  • Record up to 1024 AHB Interrupts
  • Programmable address mask register for selective recording

    • The AHB Trace Module records AHB bus traffic. It stores the following data:

  • 32-bit timestamp (based on the AHB clock)
  • 32-bit address
  • 32-bit data
  • Type of access: Read/Write
  • Value of hsize
  • Value of hresp
  • Value of hgrant

    • In addition interrupts can be recorded, using the following data:

  • 32-bit timestamp (based on the AHB clock)
  • AHB Interrupt vector (1 bit per interrupt)
    		•

    Functional description

    The recorded data is stored in FIFOs. When a FIFO is full, no further data is recorded. It is possible to clear the FIFOs by setting the clear_data bit in the CONTROL register. There is a masking mechanism available to restrict recording to a given AHB address pattern.


    Block Diagram

     

    block diagram

     

     

    Device Utilization & Performance

    Technology

    Device

    Utilization

    (Average out of some different applications)

    Performance

    Stratix III

    (Altera)    		 EP3SL150F780C2

    Logic Elements: 682

    Block Memory: 196.608 bit

    100 MHz

    AHB bus clock

    ArriaGX

    (Altera)    		 EP1AGX90EF1152C6

    Logic Elements: 780

    Block Memory: 196.608 bit

    100 MHz

    AHB bus clock


     

     

     

     
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