Global Standards for the Microelectronics Industry
Addendum No. 1 to JESD251 - OPTIONAL x4 QUAD I/O WITH DATA STROBE
This purpose of the addendum is to add an optional 4-bit bus width (x4) to JESD251, xSPI standard. The xSPI interface currently supports a x1 interface that acts as a bridge to legacy SPI functionality as well as the x8 interface intended to achieve dramatically higher bus performance than legacy SPI memory implementations. Item 1775.15.