Traffic Generator Default Behavior - 1.0 English

Versal Adaptive SoC Soft DDR4 SDRAM Memory Controller LogiCORE IP Product Guide (PG353)

Document ID
PG353
Release Date
2023-10-18
Version
1.0 English

In the default settings (parameter DEFAULT_MODE = 2015.3), the ATG performs memory writes followed by memory reads and data checks. Three types of patterns are generated sequentially:

  1. PRBS23 data pattern
    • PRBS23 data pattern is used per data bit. Each data bit has a different default starting seed value.
    • Linear address pattern is used to cover entire memory address space.
  2. Hammer Zero data pattern
    • Hammer Zero pattern is used for all data bits.
    • Linear address pattern is used to cover entire memory address space.
  3. PRBS address pattern
    • PRBS23 data pattern is used per data bit. Each data bit has a different default starting seed value.
    • PRBS address pattern is used to cover entire memory address space.

The ATG repeats memory writes and reads on each of the three patterns infinitely. For simulations, ATG performs 1,000 PRBS23 pattern followed by 1,000 Hammer Zero pattern and 1,000 PRBS address pattern.