The new UHS-II bus-interface specification bumps up SD bus-interface speeds up to 312 Megabytes per second. These transfer speeds give manufacturers the flexibility to develop new features and markets for mobile phones and other consumer electronics strengthened by the world-leading memory card standard.
"UHS-II increases SD performance and value and delivers immediate impact on manufacturer innovation and consumer creativity," said Norm Frentz, chairman of the SD Association. "We've tripled bus-interface speeds from last year's UHS-I development, and we plan to double UHS-II speeds in the future."
Tripled bus-interface speeds give manufacturers more flexible design options, including low voltage and low power consumption, for large and small SD devices without compromising data transfer rates. Since it is fully backwards compatible, devices supporting UHS bus interface will accept the billions of existing SD memory cards in the market today.
New high-speed interface signals are assigned on the second row of pins on UHS-II SDXC and SDHC memory cards. This new speed option will be available in full-size SDHC and SDXC memory cards and microSDHC and microSDXC form factors and does not change the physical size or shape of the cards.
Written by: James Delahunty @ 6 Jan 2011 20:42
