SAN JOSE, Calif. -- Denali Software Inc., one of the DDR-PHY Interface (DFI) specification participating members, has released the official DFI specification version 2.1.
The DFI specification version 2.1 includes low-power features supporting DDR3 as well as the new LP-DDR2 memory specification from JEDEC. Some of the features in the latest specification enables low-power PHY, frequency change and frequency ratio options.
DDR3 support, introduced in DFI 2.0, is key. The new frequency ratio support, which allows the memory to operate at a data rate of up to 8 times the memory controller clock frequency, is critical to supporting DDR3 memories operating at the upper end of the supported frequency range.
The collaborative technical working group within DFI includes members from ARM, Denali, Intel, LSI, Samsung, and STMicroelectronics.