double data rate

(redirected from Double transition)

double data rate

[¦dəb·əl ′dad·ə ‚rāt]
(computer science)
A clocking technique that increases the transfer speeds of synchronous memories by using both the leading and trailing edges of the clock signal to transfer data, effectively doubling the transfer rate or bandwidth.
References in periodicals archive ?
Tous ces elements ont permis a notre pays a amorce une double transition.
That double transition has reportedly delayed talks between the two sides on financing.
They also claim that it is a well recognised fact that the middle school system, which involves a double transition for pupils, leads to a dip in their performance.
The Ultra2320 supports advanced SCSI Ultra320 features, including both single transition and double transition data transfers, hardware cycle redundancy checking, domain validation, packetized SCSI and parallel protocol request.
Ultra3 SCSI has six new features in its specification, including Double Transition Clocking (DTC), Cyclic Redundancy Check (CRC), Domain Validation, Protection for Asynchronous Information Phase (AIP), Packetization, and Quick Arbitration and Selection (QAS).
The Ultra160 SCSI interface employs three features which affect data transfer: double transition clocking, domain validation and cyclic redundancy check (CRC).
A lane to the southbound 405 to absorb merging traffic from the 101, and a double transition lane from the westbound 101 to the southbound 405.
Caltrans spokesman Vince Moreno said VICA's suggestions, including the car-pool lane connector and the double transition ideas, are ``radical'' and ``not on the horizon.
The enhancements are double transition clocking, domain validation, cyclic redundancy checking, packetization, and quick arbitration and selection.
Features include double transition clocking, for combined data transfer rates of up to 320 MB/sec.
Ultra 160/m SCSI specifies use of three of the core features of Ultra3 SCSI: double transition clocking, cyclical redundancy checking and domain validation.
The presence of double transitions has been reported by Williams and coworkers [20] for a blend containing both polystyrene and poly (methyl methacrylate) and it was explained as the result of different timing for phase demixing of the two distinct thermoplastics.