lˈaɪk ɐ tɹɐdˈɪʃənəl ˌɛmˌɛmjˈuː, wˌɪtʃ tɹænslˈeɪts sˌiːpˌiːjˈuːvˈɪzᵻbəl vˈɜːtʃuːəl ɐdɹˈɛsᵻz tə fˈɪzɪkəl ɐdɹˈɛsᵻz, ðɪ ˈaɪəmˌuː mˈæps dɪvˈaɪsvˈɪzᵻbəl vˈɜːtʃuːəl ɐdɹˈɛsᵻz ˈɔːlsoʊ kˈɔːld dɪvˈaɪs ɐdɹˈɛsᵻz ɔːɹ mˈɛmɚɹi mˈæpt aɪ slˈæʃ ˈoʊ ɐdɹˈɛsᵻz ɪn ðɪs kˈɑːntɛkst tə fˈɪzɪkəl ɐdɹˈɛsᵻz.
Like a traditional MMU, which translates CPU-visible virtual addresses to physical addresses, the IOMMU maps device-visible virtual addresses (also called device addresses or memory mapped I/O addresses in this context) to physical addresses.