dˈʌbəl dˈeɪɾɚ ɹˈeɪt dˌiːdˌiːˈɑːɹ mˈɛmɚɹi kəntɹˈoʊlɚz ɑːɹ jˈuːzd tə dɹˈaɪv dˌiːdˌiːˈɑːɹ ˈɛsdɹˈæm, wˌɛɹ dˈeɪɾə ɪz tɹænsfˈɜːd ˌɔn bˈoʊθ ɹˈaɪzɪŋ ænd fˈɔːlɪŋ ˈɛdʒᵻz ʌvðə sˈɪstəmz mˈɛmɚɹi klˈɑːk.
Double data rate (DDR) memory controllers are used to drive DDR SDRAM, where data is transferred on both rising and falling edges of the system's memory clock.