... architecture, two data transfers per clock7) Bi-directional, data strobe (DQS) is transmitted/received with data, to be used in capturing ... the receiver8) Data inputs and outputs are synchronized with DQS9) DQS is edge aligned with data for READs, center aligned with ... clock inputs (CK and CK)11) DLL aligns DQ and DQS transitions with CK transitions12) Commands entered on each positive CK ...